Tibsfox/gsd-skill-creator.

3d-interaction-design

Design heuristics for three-dimensional interaction — input modalities (6DoF controllers, gaze, gesture, voice), selection and manipulation techniques (ray-cast, virtual hand, go-go, world-in-miniature), navigation (teleport, continuous, redirected walking), and feedback loops (haptic, audio, visual). Covers Fitts' law in 3D, discoverability vs affordance, safe-zone design, and comfort/simulator sickness mitigation. Use when designing VR/AR interactions, immersive walkthroughs, or any input system where the user's body is the controller.

accessibility-patterns

Provides web accessibility best practices for semantic HTML, ARIA, keyboard navigation, color contrast, and screen reader patterns. Use when building UI components, reviewing accessibility, or when user mentions 'a11y', 'accessibility', 'ARIA', 'screen reader', 'keyboard navigation', 'WCAG'.

active-listening

Active listening techniques for effective communication. Covers attending behaviors, paraphrasing, reflective listening, clarifying questions, empathic response, barriers to listening, listening in conflict, and cross-cultural listening. Use when building listening skills, improving understanding in conversation, mediating disputes, or analyzing communication breakdowns.

adversarial-pr-review

Adversarial spec-compliance PR review — cross-references diffs against approved specs, verifies runtime claims against source, detects competing PRs, audits scope/convention compliance. Use before merging.

agile-methods

Agile and Lean software development methodologies for iterative, adaptive project execution. Covers Scrum (roles, ceremonies, artifacts), Kanban (WIP limits, flow metrics), XP (TDD, pair programming, CI), SAFe overview, Lean Software Development (Poppendieck's 7 principles), user stories (INVEST criteria), estimation via story points and velocity, and the Agile Manifesto's values and principles. Includes Cynefin framework for methodology selection and GSD's relationship to Agile as a structured Lean variant.

algebraic-reasoning

Symbolic manipulation, equation solving, and algebraic structures for mathematical reasoning. Covers distributive law, factoring, completing the square, linear through polynomial equation solving, systems of equations (substitution, elimination, Gaussian elimination, matrix methods), algebraic structures (groups, rings, fields), modular arithmetic, polynomial theory, and inequalities. Use when solving equations, simplifying expressions, working with algebraic structures, or performing symbolic manipulation.

algorithmic-awareness

Understanding how algorithmic systems shape what users see, know, and do -- from recommendation feeds to search ranking to credit scoring to hiring software. Covers the mechanics of recommendation systems, algorithmic bias and its sources, personalization's effects on information diets, opacity and accountability, AI limitations (hallucination, confident wrongness), and the human-in-the-loop question. Use when a learner needs to think critically about why particular content reached them.

algorithms-data-structures

Algorithms and data structures from first principles through advanced analysis. Covers sorting (bubble, insertion, selection, merge, quick, heap, radix), searching (linear, binary, BFS, DFS, Dijkstra, A*), fundamental data structures (arrays, linked lists, stacks, queues, hash tables, trees, heaps, graphs, tries), complexity analysis (Big-O, Big-Omega, Big-Theta, amortized), recurrence relations, and algorithm design paradigms (divide-and-conquer, greedy, dynamic programming, backtracking). Use when analyzing, selecting, implementing, or comparing algorithms and data structures.

aminet-browser

Aminet search and browse: full-text search, category tree navigation, architecture filtering, package detail, and curated collections. Use when searching, browsing, or managing package collections.

aminet-emulator

FS-UAE emulator configuration and launch: hardware profiles, ROM management, WHDLoad integration, config generation, and state snapshots. Use when configuring emulation, managing ROMs, or launching Amiga software.

aminet-index

Manages Aminet INDEX infrastructure: fetch, parse, cache, and incremental update of ~84,000-entry package database. Use when managing INDEX data, checking freshness, or parsing .readme files.

aminet-installer

Aminet package installation: LhA/LZX extraction, Amiga filesystem mapping, dependency detection, install tracking, and scan gate enforcement. Use when installing, extracting, or uninstalling Amiga packages.

aminet-mirror

Selective Aminet package mirroring: single-package fetch, integrity verification, mirror state tracking, bulk download, and sync detection. Use when downloading, verifying, or managing mirrored packages.

aminet-scanner

Multi-layer virus scanning for Aminet packages. Signature-based detection, heuristic hunk analysis, boot block scanning, quarantine management, and scan orchestration. Use when scanning packages, checking virus status, or managing quarantine.

analog-circuit-design

Design of active analog circuits built around operational amplifiers and discrete gain stages — inverting, non-inverting, difference, and instrumentation topologies, negative feedback and loop stability (gain-bandwidth product, phase margin, compensation), active filters (Sallen-Key, multiple-feedback biquad), sinusoidal and relaxation oscillators, comparators and Schmitt triggers, voltage references (bandgap, shunt, series), and linear versus switching voltage regulators. Covers how to pick a topology, close a feedback loop that stays stable, set gain and bandwidth, and choose a power-conversion approach. Use when designing an amplifier, filter, oscillator, reference, comparator, or regulator, or when reasoning about feedback stability, loop gain, phase margin, or op-amp non-idealities.

analytical-methods

Spectroscopy, chromatography, titration, elemental analysis, X-ray crystallography, and mass spectrometry for chemical identification and quantitation. Covers UV-Vis and IR spectroscopy, NMR fundamentals, gas and liquid chromatography, gravimetric and volumetric analysis, diffraction methods, separation techniques, and quantitative error analysis. Use when identifying unknown substances, determining purity, measuring concentrations, or interpreting analytical data.

apprenticeship-pedagogy

Apprenticeship pedagogy for the trades — how craft is actually taught, which is almost nothing like how classroom subjects are taught. Covers the observe/practice/correct loop, the role of the master as model rather than lecturer, the ladder from sweeping the shop to working on real jobs, the honest handling of failure, and the modern adaptations of apprenticeship for contexts where a traditional master-apprentice relationship is not available. Use when designing a training program, diagnosing why a trainee is stuck, or understanding why textbook learning falls short in craft domains.

argument-evaluation

Systematic evaluation of arguments for structure, validity, soundness, and charitable interpretation. Covers premise identification, conclusion extraction, argument mapping, steel-manning, and the distinction between validity (form) and soundness (form plus true premises). Use when assessing an argument, reconstructing an opponent's position fairly, or preparing a rebuttal.

art-history-movements

Major art movements and their historical context for art education. Covers 12 movements from the Renaissance to contemporary art, their defining characteristics, key artists, signature works, and the intellectual/social forces that produced them. Use when analyzing artworks in historical context, understanding stylistic lineages, identifying influences across periods, or connecting studio practice to art-historical precedent.

atomic-structure

Atomic theory, periodic table organization, electron configuration, periodic trends, and isotopes/radioactivity. Covers Dalton through quantum mechanical models, electron shell filling (Aufbau, Hund, Pauli), periodic law and block structure, trend prediction (electronegativity, ionization energy, atomic radius, electron affinity), isotope notation, nuclear stability, and radioactive decay modes. Use when teaching, problem-solving, or reasoning about atomic-level chemistry.

audio-engineering

Audio engineering — mastering, mixing, EQ, compression, loudness standards, synthesis, podcast production, music theory, spectrum analysis.

augmented-reality-tracking

Tracking and registration fundamentals for augmented reality. Covers the six classes of tracking (marker, markerless, inertial, SLAM, outside-in, inside-out), registration error sources (calibration, latency, drift, distortion), the Azuma definition of AR, display configurations (optical see-through, video see-through, projection, handheld), and the interaction between tracking precision and user perception of "being there." Use when designing AR experiences, diagnosing registration issues, or selecting tracking technology.

av-studio

Audio/video studio production — multi-track editing, color grading, motion graphics, compositing, live streaming, screen recording, YouTube publishing.

batch-rewrite-pattern

Cascade the same edit pattern across N files safely. Use when applying the same refactor to multiple files (e.g. swap import paths across 11 scripts, rename a symbol, migrate a call signature). Detects the common-shape-across-files situation and turns an N-file cascade into a planned audit → apply → verify workflow instead of N sequential manual edits.

bayesian-methods

Bayesian approach to statistical inference and decision-making. Covers prior specification, likelihood functions, posterior computation, conjugate priors, Markov chain Monte Carlo (MCMC), credible intervals, Bayesian hypothesis comparison (Bayes factors), hierarchical models, and the philosophical contrast with frequentist methods. Use when updating beliefs with data, specifying priors, computing posteriors, comparing Bayesian and frequentist approaches, or building hierarchical models.

beads-state

Git-friendly, crash-recoverable state persistence for the Gastown orchestration chipset. Manages agent identities, work items, hooks, convoys, and merge requests as JSON files with atomic write operations.

beautiful-commits

Crafts professional git commit messages following Conventional Commits. Use when committing changes or writing commit messages.

behavioral-economics

Systematic departures from rational choice theory and their implications for economic analysis and policy. Covers cognitive heuristics (anchoring, availability, representativeness), biases (loss aversion, status quo, overconfidence), prospect theory (reference dependence, probability weighting, diminishing sensitivity), nudge theory and choice architecture, and the integration of psychological findings into economic models. Use when analyzing decision-making under uncertainty, evaluating policy interventions that exploit behavioral patterns, or assessing where standard rational-agent models break down.

behavioral-neuroscience

Biological foundations of behavior and mental processes. Covers brain structure and function (cerebral cortex, limbic system, brainstem, cerebellum, lateralization), neurotransmitter systems (dopamine, serotonin, norepinephrine, GABA, glutamate, acetylcholine), neural plasticity (synaptic plasticity, neurogenesis, critical periods, experience-dependent change), and psychopharmacology (drug mechanisms, tolerance, dependence, major drug classes). Use when analyzing brain-behavior relationships, neurotransmitter function, neural development and plasticity, or pharmacological effects on cognition and behavior.

biogeochemical-cycles

Carbon, nitrogen, phosphorus, sulfur, and water cycles — pools, fluxes, residence times, and anthropogenic perturbations. Covers the fast and slow carbon cycles, the Haber-Bosch disruption of the nitrogen cycle, the phosphorus bottleneck, the hydrological cycle, ocean acidification, and the planetary boundaries framework. Use when tracking chemical elements through atmosphere, hydrosphere, biosphere, and lithosphere; computing pool sizes and fluxes; or evaluating anthropogenic perturbations to global cycles.

bird-observation

Birding by sight and sound — gestalt, song and call vocabulary, behavioral and habitat clues, and the discipline of producing eBird-grade records. Covers the vocabulary of bird field marks, the primary categories of vocalization, the habits of habitat-filtering, and the protocol for submitting records to a citizen-science database without degrading data quality. Use when the task is bird-specific observation or record-keeping.

blameless-postmortem

Google SRE-style blameless postmortem authoring. Structure, timeline construction, contributing-factor extraction, action-item discipline, and the cultural practices that make postmortems produce learning rather than theater. Use when writing a postmortem after an incident, reviewing a draft postmortem, running a postmortem review meeting, building a postmortem template, or teaching a team how to write postmortems that actually improve the system. Complements rca-human-factors (for the "why people did what they did" analysis) and the rca-classical-methods / rca-systems-theoretic / rca-causal-inference / rca-distributed-systems skills (which supply the investigation techniques that populate the postmortem's analysis section).

bloom-taxonomy-and-mastery

Bloom's Taxonomy of Educational Objectives and mastery learning as practical instructional design tools. Covers the six cognitive levels (remember, understand, apply, analyze, evaluate, create), the revised 2001 taxonomy, the knowledge dimension, mastery learning loops, formative vs. summative assessment, and the writing of learning objectives that are both specific and verifiable. Use when designing lessons, writing objectives, building assessments, or diagnosing why a learner is stuck at one cognitive level.

bootstrap-guide

GSD-OS bootstrap guide — from freshly unzipped directory to fully operational development environment. Covers prerequisite detection, workspace setup, service bring-up, magic level adaptation, error recovery, and the you-can't-break-it guarantee.

breath-and-meditation-foundations

Foundations of breath practice and seated meditation across traditions — diaphragmatic mechanics, pranayama families (ujjayi, nadi shodhana, bhramari, kapalabhati, bhastrika, sitali, sheetkari), buffer-safe breath-retention posture, shikantaza and koan traditions in Sōtō and Rinzai Zen, secular clinical mindfulness as MBSR translates it, and engaged-mindfulness pedagogy as Plum Village teaches it. Use when setting up a breath practice, designing a meditation sit, debugging a stalled practice, or deciding whether a given technique is safe for a given person.

business-ethics-and-governance

Business ethics, corporate governance, and stakeholder responsibility for firms operating in complex social and regulatory environments. Covers ethical frameworks applied to business, stakeholder vs shareholder theory, board structure and fiduciary duty, conflicts of interest, whistleblowing, CSR and ESG, and the distinction between legal compliance and ethical conduct. Use when evaluating a decision with ethical stakes, designing a governance structure, or diagnosing a corporate scandal.

cardiovascular-fitness

Cardiovascular fitness assessment and prescription for physical education. Covers VO2max, the Cooper 12-minute run, target heart rate zones, the FITT framework (Frequency, Intensity, Time, Type), aerobic versus anaerobic energy systems, and progression principles for building aerobic capacity safely at every age. Use when designing fitness units, assessing baseline cardiovascular health, prescribing exercise, explaining why aerobic work matters, or translating sports medicine evidence into classroom practice.

cartography-gis

Map design, spatial analysis, and Geographic Information Systems. Covers map projections and their distortion trade-offs, coordinate systems, thematic mapping techniques (choropleth, proportional symbol, dot density, isoline), remote sensing and satellite imagery, GIS data models (vector and raster), spatial analysis operations (overlay, buffer, interpolation, network analysis), and cartographic design principles. Use when creating maps, analyzing spatial data, selecting projections, interpreting satellite imagery, or reasoning about spatial relationships in any domain.

cartridge-forge

Use when the user asks to forge, scaffold, or author a new cartridge — content cartridge, department cartridge, or chipset bundle. Drives the cartridge-forge loop (scaffold → fill → gate checks → commit) via the skill-creator cartridge CLI.

causation-consequence

Causal reasoning in historical analysis. Covers distinguishing immediate from underlying causes, tracing chains of causation across time scales, identifying unintended consequences, and applying counterfactual reasoning to assess causal significance. Use when analyzing why historical events occurred, evaluating the relative weight of causes, or assessing whether outcomes were inevitable or contingent.

celestial-coordinates

Celestial coordinate systems and sky positioning. Covers horizon (altitude-azimuth), equatorial (right ascension-declination), ecliptic, and galactic systems; epoch and precession; coordinate transformations; planisphere use; and practical sky-locating from any latitude and date. Use when locating objects, planning observations, converting catalog coordinates, or teaching the geometry of the sky.

checkpoint-resume-long-job

Persist progress for long-running jobs (batched LLM calls, large ingestions, multi-hour syncs) so that a context reset, crash, or interrupt doesn't lose work. Use whenever a job iterates over N items and completing item K matters independently. Provides a resumable.mjs library pattern plus the skill's invocation heuristics.

chemical-bonding

Ionic, covalent, and metallic bonding, Lewis structures, VSEPR theory, molecular geometry, polarity, and intermolecular forces. Covers octet rule and exceptions, formal charge, resonance, sigma/pi bonds, orbital hybridization, electronegativity-driven bond classification, VSEPR electron-domain and molecular geometries, dipole moments, and the four intermolecular force types (London dispersion, dipole-dipole, hydrogen bonding, ion-dipole). Use when predicting molecular shapes, bond properties, or physical behavior from molecular structure.

circuit-analysis-dc-ac

Systematic analysis of DC and AC linear circuits using Ohm's law, Kirchhoff's laws, node and mesh methods, Thevenin and Norton equivalents, phasor analysis, and Bode plots. Covers series and parallel reduction, superposition, source transformation, impedance in the frequency domain, first and second order transient response, and the conversion between time domain and phasor representations. Use when quantitatively predicting voltages, currents, power, gain, phase, or time response of any lumped-element linear circuit.

classical-mechanics

Classical mechanics from kinematics through rotational dynamics and oscillations. Covers 1D/2D/3D motion, Newton's three laws, free-body diagrams, friction, projectile motion, circular motion, rotational mechanics, gravitation and orbits, work-energy theorem, conservation of momentum, collisions, and simple harmonic motion. Use when analyzing forces, trajectories, orbital mechanics, or any problem where objects move under deterministic forces at non-relativistic speeds.

climate-science

Climate physics, forcing, feedback, and attribution. Covers the greenhouse effect and radiative forcing, climate sensitivity, fast and slow feedbacks, the paleoclimate record, detection and attribution science, regional climate impacts, and the distinction between weather, climate variability, and forced climate change. Use when reasoning about global warming mechanisms, interpreting temperature or CO2 records, evaluating attribution claims for extreme events, or distinguishing signal from natural variability.

clinical-foundations

Foundations of clinical psychology and psychopathology. Covers anxiety disorders (generalized anxiety, panic, phobias, OCD, PTSD), depressive disorders (major depression, persistent depressive disorder, bipolar), personality theories (psychodynamic, trait/Big Five, humanistic, social-cognitive), therapeutic approaches (CBT, psychodynamic, humanistic/person-centered, behavioral, pharmacological), the biopsychosocial model, DSM diagnostic framework, and the evidence base for psychological treatments. Use when analyzing psychological disorders, therapeutic approaches, personality assessment, or the intersection of biology, psychology, and social context in mental health.

cloud-identity-and-auth

Identity, authentication, authorization, and token management for cloud platforms. Covers Keystone-style scoped tokens, OAuth 2.0 flows, OpenID Connect, JWT structure and pitfalls, federation with SAML/OIDC, service-to-service auth with mTLS and SPIFFE, principle of least privilege, IAM role design, and the service catalog pattern (public/internal/admin endpoints). Use when designing authn/authz for a multi-tenant cloud service, integrating with an identity provider, or reviewing IAM policies for over-privilege.

coaching-and-teaching

Coaching as teaching — John Wooden's Pyramid of Success, practice design, feedback quality, instructional economy, and the craft of deliberate skill development. Covers the difference between knowing the game and teaching it, Wooden's actual practice methods as documented by Gallimore and Tharp, skill progression through part-whole teaching, the four-to-one positive feedback discipline, and the habits that distinguish effective coaches from merely knowledgeable ones. Use when designing practices, improving instruction, mentoring young coaches, or framing sport leadership as an educational activity.

cognitive-biases

Recognition and mitigation of systematic reasoning errors documented in the heuristics and biases tradition. Covers confirmation bias, availability, anchoring, representativeness, framing effects, hindsight bias, overconfidence, and motivated reasoning. Each bias is presented with its mechanism, diagnostic signal, and structured mitigation. Use when you suspect your own or another reasoner's conclusions may be shaped by systematic cognitive distortion rather than evidence.

cognitive-psychology

Core cognitive processes underlying human thought and behavior. Covers attention (selective, divided, sustained), memory systems (sensory, working, long-term, encoding, retrieval, forgetting), perception (top-down, bottom-up, Gestalt principles, perceptual constancy), decision-making (heuristics, biases, prospect theory, bounded rationality), language processing (comprehension, production, Broca/Wernicke, bilingualism), and problem-solving (algorithms, heuristics, insight, functional fixedness, mental set). Use when analyzing how people think, attend, remember, perceive, decide, or solve problems.

collaborative-problem-solving

Group problem solving with explicit structure. Covers shared mental models, role allocation, cognitive division of labor, building on ideas (yes-and), productive disagreement, and the moves that prevent social loafing and groupthink. Use for problems that exceed individual capacity or benefit from multiple expertise areas.

color-theory

Color theory principles for art education. Covers the three color properties (hue, saturation, value), color mixing systems (subtractive and additive), color relationships (complementary, analogous, triadic, split-complementary), color temperature, simultaneous contrast and the relativity of color perception, and practical palette construction. Use when analyzing color in artworks, planning color schemes, understanding optical phenomena in painting, or investigating Albers's Interaction of Color experiments.

commit-style

Crafts and generates professional conventional commit messages following Angular/Conventional Commits format. Use when committing changes, writing git commit messages, or when user mentions commit message.

comparative-religion

Comparative religion as a scholarly discipline — cross-tradition analysis of doctrines, practices, and experiences without collapsing traditions into each other or ranking them against a normative standard. Covers the history of the discipline (from Max Muller through Eliade, Smart, Smith, and the contemporary critique), typologies (theism, monism, polytheism, non-theism), the dimensions framework (doctrinal, ritual, ethical, experiential, mythic, institutional, material), and the ethics of comparison. Use when a query asks how a concept, practice, or text functions across multiple traditions.

compliance-governance

Provides compliance, governance, and supply chain security guidance for cloud-native systems. Covers OPA Rego policies, Kyverno cluster policies, SBOM generation, SLSA provenance, audit trail design, and regulatory framework mapping. Use when user mentions 'compliance', 'governance', 'OPA', 'kyverno', 'SBOM', 'SLSA', 'audit', 'policy-as-code', 'SOC2', 'HIPAA', 'PCI-DSS', 'artifact signing'.

computational-literacy

Understanding how digital systems actually work -- hardware, operating systems, networks, and information representation -- at a depth sufficient to reason about them rather than just use them. Covers CPU/RAM/storage/GPU roles, what an OS does, how packets travel the internet, and how computers represent numbers, text, images, and sound as binary. Use when a learner needs to build a mental model of computing rather than memorize menu paths.

computational-thinking

Computational thinking as a problem-solving discipline independent of programming languages. Covers the four pillars (decomposition, pattern recognition, abstraction, algorithm design), computational problem-solving methodology (understand, decompose, generalize, formalize, verify), abstraction levels (from hardware through user interface), modeling and simulation, automata and formal languages (DFA, NFA, regular expressions, context-free grammars, Turing machines), computational complexity classes (P, NP, NP-complete, undecidable), and constructionist pedagogy (learning by building, Logo, Scratch, physical computing). Use when approaching unfamiliar problems, teaching problem-solving strategies, analyzing problem complexity, or bridging between domain knowledge and computational solutions.

construction-docs

Generates complete construction documentation packages — BOM, installation sequences, commissioning checklists, and O&M manuals — from verified engineering designs.

constructivism-and-schema

Piaget's constructivism, schema theory, and cognitive development as practical tools for curriculum design. Covers assimilation, accommodation, equilibration, the four stages (sensorimotor, preoperational, concrete operational, formal operational), conservation tasks, schema-based reading and problem-solving, and the distinction between developmental readiness and domain-specific expertise. Use when designing age-appropriate material, diagnosing why a learner is not assimilating new content, or building on prior knowledge.

contemplative-traditions-comparative

Comparative framing across contemplative and mind-body traditions — Sōtō Zen and Rinzai Zen, Theravada vipassana, Tibetan Vajrayana, classical yoga and its eight limbs, Daoist internal cultivation, secular MBSR and MBCT, engaged mindfulness as Thich Nhat Hanh teaches it, Christian contemplative prayer, Sufi dhikr, the Hesychast tradition of the Eastern Orthodox church — for the routing agent who has to understand where a user is already standing before recommending a practice. Covers the pedagogical voice of each tradition, the places they overlap, the places they genuinely disagree, and the non-sectarian framing the college department uses. Use when a user arrives with a prior tradition, when a query spans more than one tradition, or when the agent needs a vocabulary for what is shared and what is lineage-specific.

contested-claims-in-nutrition

A survey of the best-known active scientific controversies in nutrition — saturated fat and cardiovascular disease, dietary cholesterol, low-carb vs low-fat, ultra-processed foods, red meat and cancer, salt and blood pressure, and the replication status of popular single-nutrient claims. Use when a question asks whether a widely reported nutritional claim is settled, or when the department needs to distinguish "contested but plausible" from "settled" from "disproven."

context-handoff

Creates context handoff documents for session continuity. Use when ending sessions, switching tasks, or handing off work.

continuity-change

Analyzing patterns of continuity and change over time in historical contexts. Covers periodization (how and why we divide history into eras), identifying turning points, measuring rates of change, and recognizing long-term patterns and trends. Use when analyzing temporal structure in history, debating period boundaries, or assessing whether a moment represents genuine transformation or surface-level disruption.

contracts-and-business-law

Contracts, commercial law, and intellectual property essentials for founders, managers, and knowledge workers. Covers the elements of contract formation, common contract types, property rights, consumer protection, employment law basics, and the four IP regimes — patents, copyrights, trademarks, and trade secrets. Use when drafting or reviewing an agreement, protecting an invention or brand, evaluating a licensing deal, or understanding regulatory exposure.

control-systems-and-dynamics

Classical control and system dynamics for engineered systems — feedback and closed-loop control, transfer functions and block diagrams, poles/zeros and stability, time-domain response (rise time, overshoot, settling time), PID controllers and tuning, and frequency response (Bode plots, gain and phase margin). Traces feedback control from the flyball governor to modern controllers. Use when analyzing feedback loops, designing or tuning a PID controller, assessing stability from poles or margins, or characterizing transient response of a dynamic system.

corporate-finance-basics

Corporate finance fundamentals for evaluating business decisions under cost, time, and risk constraints. Covers time value of money, net present value, internal rate of return, payback period, break-even analysis, cost-benefit analysis, debt vs equity, working capital, and the basic financial statements. Use when evaluating an investment, sizing a funding round, structuring a capital stack, or reading a balance sheet.

cosmological-observation

Observational cosmology from Hubble's law to the CMB. Covers redshift, Hubble expansion, the cosmological parameters, the cosmic microwave background, large-scale structure, galaxy rotation curves and dark matter, Type Ia SNe and dark energy, and the current state of Lambda-CDM. Use when reasoning about the large-scale universe, interpreting cosmological surveys, or teaching the Big Bang evidence chain.

counterpoint

Contrapuntal writing and analysis covering species counterpoint, fugue structure, canon types, and imitative techniques. Covers Fux's five species, cantus firmus construction, consonance and dissonance treatment, invertible counterpoint, fugue anatomy (subject, answer, countersubject, episode, stretto), canon varieties, and contrapuntal practice from Palestrina through Shostakovich. Use when writing or analyzing counterpoint, studying fugue structure, or understanding the linear dimension of polyphonic music.

craft-methodology

Craft methodology for the trades — how skilled work is organized, decomposed, sequenced, and evaluated from first principles through finished artifact. Covers the craft arc (intent, layout, roughing, fitting, finishing, inspection), the distinction between process knowledge and product knowledge, and how craft traditions encode error-correction in their sequencing. Use when designing a new trade process, diagnosing a faltering one, or teaching craft structure to a learner.

creative-pipeline

Generates Blender Python scripts for infrastructure visualization and ffmpeg commands for video production and social media export.

creative-process

The creative process in art from idea to exhibition. Covers five phases of creative work (inspiration, incubation, exploration, execution, reflection), sketchbook practice, artist statements, critique methodology (formal and conceptual), portfolio development, and the studio as a working environment. Use when guiding students through project development, facilitating critique sessions, developing artist statements, curating portfolios, or understanding how professional artists structure their creative practice.

creative-thinking

Techniques for generating novel ideas, reframing problems, and escaping fixed mental models. Covers lateral thinking (de Bono), Six Thinking Hats, random stimulation, provocation operators (PO), analogical transfer, assumption challenging, and divergent-then-convergent thinking cycles. Use when the goal is to produce new options or perspectives rather than evaluate existing ones.

critical-argumentation

Practical argument analysis and construction -- how to identify, evaluate, reconstruct, and build real arguments in natural language. Covers argument identification (premises, conclusions, intermediate steps), charity and steel-manning, argument mapping, the distinction between deductive validity and inductive strength, burden of proof, and the rhetorical context in which arguments operate. Use when the goal is to engage with real-world argument rather than to formalize it.

critical-reading

Analytical evaluation of texts for argument quality, author purpose, bias, credibility, and rhetorical strategy. Covers the distinction between comprehension and critique, argument analysis (claims, evidence, reasoning, warrants), rhetorical appeals (ethos, pathos, logos), bias identification (selection bias, confirmation bias, loaded language, omission), source credibility evaluation (CRAAP test, lateral reading), propaganda techniques, media literacy, and multi-text synthesis. Use when evaluating arguments, identifying bias, assessing source reliability, analyzing rhetoric, or synthesizing across multiple texts on the same topic.

critical-thinking

Critical thinking as philosophical practice. Covers the Socratic method (elenchus), argument identification and reconstruction, premise evaluation, fallacy detection (formal and informal), charitable interpretation (principle of charity), dialectical thinking (thesis-antithesis-synthesis), thought experiment methodology, philosophical writing and reading, intellectual virtues (humility, courage, empathy, honesty), Dewey's reflective thinking, and critical thinking applied to everyday reasoning. Use when analyzing arguments, practicing Socratic questioning, evaluating reasoning, or developing philosophical method.

cybersecurity-basics

Foundational cybersecurity literacy covering threat landscape (malware, phishing, social engineering, network attacks), defensive practices (encryption, authentication, access control, patching), privacy fundamentals (data collection, tracking, regulatory frameworks), and security reasoning (threat modeling, risk assessment, defense in depth). Use when explaining security concepts, evaluating system security, teaching safe technology practices, or reasoning about digital privacy. Distinct from professional penetration testing -- this skill covers what every technology user and designer should understand.

dacp-assembler

Composes three-part DACP bundles from skill library artifacts. Determines fidelity level, queries catalog, and records assembly rationale.

dacp-interpreter

Load, validate, and use DACP bundles as structured execution context. Detects .bundle/ companion directories, validates integrity (manifest schema, fidelity, provenance), loads typed data, and builds ExecutionContext for receiving agents. Scripts are NEVER auto-executed. Use when processing incoming DACP bundles, interpreting .bundle/ directories alongside .msg files, validating bundle integrity, or building execution context from bundle payloads.

data-analysis-sci

Data collection, analysis, and interpretation for scientific inquiry. Covers measurement and units, data recording and organization, descriptive and inferential statistics, graphical representation, error analysis, drawing valid conclusions from evidence, and recognizing the limits of data. Use when collecting, analyzing, visualizing, or interpreting scientific data at any level.

data-fidelity

Fact-checking and source verification workflow for research documents. Launches parallel fact-checkers, aggregates findings, applies corrections systematically.

data-privacy

Understanding and managing what digital services collect, store, share, and infer about you. Covers password security and entropy, multi-factor authentication, privacy settings, data minimization, the difference between first-party and third-party tracking, cookies and fingerprinting, privacy laws (GDPR, CCPA), and how to respond to data breaches. Use when helping a learner make informed decisions about what to share, with whom, and under what terms.

data-wrangling

Data cleaning, transformation, reshaping, joins, missing data handling, and tidy data principles. Covers the full pipeline from raw ingestion to analysis-ready datasets -- type coercion, deduplication, outlier detection, normalization, melting/pivoting, regex extraction, and reproducible transformation chains. Use when preparing, cleaning, or transforming data for analysis.

debugging-testing

Use when the user reports a bug they can't reproduce, asks where to start debugging, or mentions a Heisenbug / production-only failure. Drives the observe→hypothesize→predict→test→iterate scientific method.

decision-framework

Thinking frameworks for decisions and problem analysis. Use when evaluating options, root causes, or prioritizing.

decision-framework-invoker

Triggers for automatically invoking the decision-framework skill before irreversible or high-blast-radius operations. Use as a checkpoint: when a proposed action matches a trigger pattern, pause and run the appropriate framework (first-principles, inversion, decision matrix, second-order thinking) before proceeding. Prevents ad-hoc calls from becoming regret.

decision-making

Structured approaches to decisions under uncertainty and complexity. Covers expected value, decision trees, multi-criteria decision analysis, System 1 vs System 2 allocation, pre-mortems, reversible vs irreversible decisions, and the distinction between good decisions and good outcomes. Use when choosing among alternatives with uncertain or multi-dimensional consequences, especially when the stakes justify a deliberate rather than intuitive process.

deliberate-practice-design

Deliberate practice as a rigorous training method distinct from ordinary repetition. Covers Ericsson's four conditions (specific goals, full attention, immediate feedback, repetition at the edge of current ability), the role of mental representations, coach-directed vs. self-directed practice, the plateau escape pattern, and practical drill design for procedural skills. Use when designing practice sets, diagnosing why practice is no longer producing gains, or distinguishing productive effort from busywork.

descriptive-statistics

Summarizing and visualizing data through measures of center, spread, shape, and position. Covers mean, median, mode, range, IQR, variance, standard deviation, percentiles, z-scores, five-number summaries, and graphical displays (histograms, box plots, stem-and-leaf, dot plots, scatter plots). Emphasizes choosing the right summary for the data's shape and scale. Use when summarizing datasets, choosing visualizations, computing summary statistics, or interpreting distributions.

design-process

Engineering design cycle covering requirements elicitation, specifications writing, constraint identification, iterative prototyping, and design communication. Spans the full loop from problem definition through ideation, analysis, prototyping, testing, and redesign. Includes morphological charts, TRIZ, Pugh matrices, design reviews, and the distinction between functional and non-functional requirements. Use when framing engineering problems, generating design alternatives, writing specifications, or running design reviews.

design-thinking

The technology design process from needs assessment through iteration, covering empathy mapping, design briefs, concept development, prototyping, user testing, and iterative refinement. Integrates design thinking methodology (Stanford d.school) with engineering design process (ITEEA) and Don Norman's human-centered design principles. Use when designing technology solutions, evaluating existing designs, running design sprints, or teaching the design cycle. Distinct from art/aesthetics -- this skill focuses on functional design that solves real problems for real people.

design-thinking-ps

Design thinking for ill-structured problems. Covers empathize, define, ideate, prototype, test — the iterative human-centered cycle used when the problem itself is not yet clear. Includes reframing, brainstorming, lateral thinking operators, assumption challenging, and the discipline of building to learn rather than building to ship. Use for wicked problems, product design, and any problem where "what is the question?" is the hard part.

development-economics

Economics of low-income countries and the structural transformation from agrarian poverty to industrial prosperity. Covers growth models (Solow, endogenous growth, unified growth theory), the role of institutions (inclusive vs. extractive), inequality measurement and dynamics (Gini, Lorenz curve, Kuznets), poverty traps and their mechanisms (nutritional, financial, geographical), foreign aid debates, and the capability approach as an alternative development metric. Use when analyzing why some countries are rich and others poor, evaluating development interventions, or reasoning about the relationships between growth, inequality, institutions, and human well-being.

developmental-psychology

Lifespan development from prenatal through aging. Covers Piaget's stages of cognitive development (sensorimotor, preoperational, concrete operational, formal operational), Erikson's psychosocial stages, attachment theory (Bowlby, Ainsworth, secure/avoidant/anxious/disorganized), moral development (Kohlberg, Gilligan), language acquisition (critical period, LAD, stages), adolescent identity formation, adult development, and aging. Use when analyzing how cognitive, social, emotional, and moral capacities develop and change across the human lifespan.

dietary-assessment

Methods for assessing what people actually eat — 24-hour recall, food frequency questionnaires, diet diaries, biomarkers, duplicate-plate studies, and controlled feeding. Covers the relative strengths and biases of each instrument, how to choose among them for a given question, and how to interpret results in the presence of measurement error. Use when a user wants to estimate population-level intake, individual-level intake, or evaluate the plausibility of a dietary claim that depends on how intake was measured.

digital-art

Digital art tools, techniques, and workflows for art education. Covers raster and vector workflows, digital painting, photo manipulation, generative and procedural art, 3D modeling and rendering, pixel art, the relationship between traditional skills and digital execution, and ethical considerations of AI-generated imagery. Use when working with digital tools, evaluating digital art, or bridging traditional art concepts into digital practice.

digital-citizenship

Being a constructive participant in networked communities. Covers digital footprint management, online etiquette and professional communication, collaborative tools, attribution and copyright, cyberbullying recognition and response, and the responsibilities that come with amplification. Use when helping learners think about how to behave online -- not what is technically allowed, but what is actually healthy for themselves and their communities.

digital-logic-design

Design and analysis of combinational and sequential digital circuits using Boolean algebra, truth tables, K-maps, CMOS gate implementation, flip-flops, registers, counters, and finite state machines. Covers De Morgan's theorems, canonical sum-of-products and product-of-sums forms, minimization techniques, propagation delay, setup and hold times, metastability, synchronous design discipline, and FSM encoding. Use when designing, minimizing, verifying, or debugging any circuit whose signals take only discrete logic values.

digital-systems

Foundational digital technology literacy covering binary and data representation, computer architecture (CPU, memory, storage, I/O), networking fundamentals (protocols, the internet, LAN/WAN), operating systems, and software concepts. Use when explaining how computers work, how data is stored and transmitted, how networks operate, or how hardware and software interact. Distinct from programming -- this skill covers what digital systems are and how they function, not how to write code for them.

distance-ladder

The cosmic distance ladder from radar ranging to Hubble flow. Covers parallax, spectroscopic parallax, cluster main-sequence fitting, Cepheid and RR Lyrae period-luminosity relations, Type Ia supernovae, Tully-Fisher, surface brightness fluctuation, and redshift-distance relations. Use when estimating, cross-checking, or critiquing any astronomical distance from a parsec to a gigaparsec.

distributed-consensus

Distributed consensus algorithms and logical time for cloud and multi-node systems. Covers Lamport clocks, vector clocks, FLP impossibility, Paxos (basic, multi, fast), Raft, Viewstamped Replication, Byzantine fault tolerance basics, quorum reads/writes (N/R/W), leader election, and TLA+ specification style. Use when designing replicated state machines, picking a consensus protocol, reasoning about split-brain and quorum loss, or writing formal specs for distributed coordination.

distributed-storage

Distributed storage systems design and operation for cloud platforms. Covers the GFS/HDFS block-and-master pattern, object storage (Swift/S3) with consistent hashing and eventual consistency, block storage semantics, replication vs erasure coding, the CAP theorem in practice, read-repair and anti-entropy, snapshot chains, and the GFS/BigTable/Spanner evolution. Use when designing a storage subsystem, choosing between object/block/file, or reviewing a replication and consistency strategy.

doc-verifier

Guidance for verifying documentation accuracy against running OpenStack infrastructure. Use when detecting documentation drift, validating operations procedures against live systems, or confirming that runbooks produce expected results on the deployed cloud. Implements NASA Product Verification (SP-6105 SS 5.3) applied to documentation artifacts.

done-retirement

Pipeline retirement protocol for completed work items. Implements a 7-stage validate-commit-push-submit-notify-cleanup-terminate pipeline with irreversibility after push. Done means gone.

drawing-observation

Observational drawing and visual perception techniques for art education. Covers contour drawing, gesture drawing, negative space, proportion and measurement, value mapping, spatial depth cues, and the cognitive shift from symbolic to perceptual seeing. Use when teaching drawing fundamentals, analyzing observational accuracy, or developing visual literacy in any medium.

ear-training

Aural skills development covering interval recognition, chord quality identification, rhythmic and melodic dictation, sight-singing, and progressive pedagogy. Covers the Kodaly method (hand signs, relative solmization, singing-first approach), interval identification strategies, chord quality and inversion recognition, harmonic dictation, solfege systems (fixed-do vs. movable-do), Gordon's Music Learning Theory, Suzuki method principles, and structured difficulty sequencing. Use when developing listening skills, practicing dictation, preparing sight-singing, or designing ear training curricula.

earth-life-systems

Earth and life systems as contexts for scientific inquiry. Covers ecosystems, biodiversity, biogeochemical cycles, climate systems, geological processes, and human impacts -- not as content to memorize but as case studies for applying the scientific method, experimental design, data analysis, and field observation. Use when applying scientific inquiry skills to ecological, environmental, or biological questions.

ecosystem-alignment

Upstream version checking, agentskills.io spec compliance audit, Claude Code feature gap analysis. Activates on updates, version checks, or alignment work.

ecosystem-dynamics

Ecological organization, energy flow, food webs, biodiversity, succession, and species interactions. Covers trophic structure, primary productivity, nutrient transfer efficiency, keystone and foundation species, ecosystem services, carrying capacity, disturbance regimes, primary and secondary succession, and resilience metrics. Use when analyzing how living communities are organized, how energy and matter move through ecosystems, how disturbance and recovery shape landscapes, or why biodiversity matters for ecosystem function.

ecosystem-mapping

Reading a habitat — identifying biome, plant community, food web structure, successional stage, and the keystone species that hold the system together. Covers the elevational and latitudinal gradients that Humboldt first mapped, the structural vocabulary for describing a habitat, the core concepts of food-web and trophic analysis, and the practice of diagnosing habitat health from indicator species. Use when the task is to understand a place rather than a species.

electromagnetism

Electromagnetism from Coulomb's law through Maxwell's equations and optics. Covers electric fields, Gauss's law, electric potential, capacitance, DC circuits (Ohm's law, Kirchhoff's laws), magnetic fields and forces, Biot-Savart law, Ampere's law, Faraday's law of induction, Lenz's law, Maxwell's equations in integral and differential forms, electromagnetic waves, the speed of light derivation, and optics (reflection, refraction, lenses, interference, diffraction). Use when analyzing electric or magnetic phenomena, circuit design, wave propagation, or optical systems.

electronics

Electronics Educational Pack — routes queries to 15 modules covering Ohm's law through PCB design

embodied-computing-and-constructionism

Embodied computing and constructionist pedagogy for spatial computing education. Covers Papert's constructionism, Logo's turtle geometry, body-scale learning, Krueger's responsive environments, microworlds, and the translation between physical action and abstract reasoning. Includes heuristics for designing exercises where learners build meaningful artifacts in spatial systems, treat errors as discoveries, and develop abstract thinking from concrete body-centered experience. Use when teaching spatial computing to learners or designing educational experiences in voxel/VR/AR systems.

emerging-tech

Emerging and transformative technologies -- artificial intelligence, biotechnology, quantum computing, blockchain, robotics, IoT, augmented/virtual reality, and nanotechnology. Covers how each technology works at a conceptual level, current capabilities vs hype, societal implications, and risk assessment frameworks. Use when evaluating new technologies, assessing technological claims, understanding technology trends, or reasoning about the future impact of technology. Pairs with responsible-innovation for ethical analysis.

engineering-ethics

Engineering ethics covering safety, professional codes of conduct, public welfare responsibility, whistleblowing, case studies (Challenger, Columbia, Hyatt Regency, Bhopal, Therac-25), and the ethical dimensions of design decisions. Includes the NSPE Code of Ethics, the iron ring tradition, risk communication, informed consent in engineering, and the duty to dissent. Use when analyzing ethical dimensions of engineering decisions, teaching professional responsibility, or reviewing designs for safety and public welfare.

entrepreneurship-and-innovation

Entrepreneurship, innovation, and disruption for starting, scaling, and defending new ventures. Covers opportunity recognition, jobs-to-be-done, the disruptive innovation framework, sustaining vs disruptive innovation, platform businesses, network effects, minimum viable product, customer development, and the startup lifecycle from idea to exit. Use when evaluating a venture idea, positioning a new product, interpreting a competitive threat, or designing a platform.

env-setup

Environment configuration and secrets management. Use when setting up .env files, managing secrets, or configuring environments.

environmental-geography

Human modification of Earth's systems and the geographic dimensions of environmental change. Covers climate change science (greenhouse effect, feedback loops, projections), deforestation and land use change, desertification and soil degradation, water resource management, biodiversity loss and conservation geography, pollution and environmental justice, and sustainability frameworks. Use when reasoning about human impacts on the environment, environmental policy, conservation planning, climate adaptation, or the spatial distribution of environmental risks.

environmental-justice

Distributional analysis of environmental benefits and burdens across communities. Covers the historical origins of environmental justice in the U.S. civil rights tradition, siting and exposure disparities, indigenous rights and land stewardship, climate justice at global and intergenerational scales, procedural vs. distributional vs. recognition justice, and the environmental justice screening tools used by regulators. Use when analyzing who bears environmental harm and who receives environmental benefit, or when designing interventions whose distributional consequences matter.

epistemology

Theory of knowledge and justification across the Western philosophical tradition. Covers the tripartite analysis (justified true belief), Gettier problems, foundationalism vs. coherentism vs. reliabilism, skepticism (Cartesian and external world), rationalism vs. empiricism, Kant's synthesis, social and feminist epistemology, pragmatist epistemology, naturalized epistemology, and philosophy of science (Popper, Kuhn, Lakatos, Feyerabend). Use when analyzing claims about knowledge, evidence, certainty, justification, or scientific method.

estimation-planning

Project estimation and scheduling techniques for software development. Covers work breakdown structures (WBS), critical path method (CPM), PERT three-point estimation, Gantt charts, resource leveling, Goldratt's critical chain project management (buffer management), story point estimation, planning poker, reference class forecasting (Kahneman/Flyvbjerg), cone of uncertainty, schedule compression (crashing vs. fast-tracking), milestone planning, dependency management, and Brooks's Law. Connects GSD wave execution planning as a practical estimation and scheduling framework.

ethics

Ethical theory and moral reasoning across the major philosophical traditions. Covers normative ethics (consequentialism, deontology, virtue ethics, care ethics, existentialist ethics), metaethics (moral realism, anti-realism, emotivism, error theory), and applied ethics (bioethics, environmental ethics, AI ethics, just war theory). Includes a moral dilemma analysis framework with worked examples applying multiple frameworks to the same case.

ethics-and-practice

Religious ethics and practice across traditions — moral theology and its sources, the role of virtue, law, and narrative in ethical formation, ritual as ethical shaping, the relation of contemplative practice to ethical life, and comparative work on shared ethical ground (the golden rule, non-harm, care for the stranger) and genuine disagreement. Use when a query asks what a tradition requires of its adherents, how ritual and ethics interact, or how traditions agree and differ on specific moral questions.

ethics-governance

Bias detection and mitigation, fairness metrics, privacy frameworks, consent models, transparency requirements, and accountability structures for data science practice. Covers algorithmic bias sources, disparate impact testing, differential privacy, GDPR principles, model cards, datasheets for datasets, responsible AI frameworks, and the organizational governance needed to make ethics actionable. Use when auditing models for bias, designing privacy-preserving systems, establishing governance processes, or evaluating the social impact of data-driven decisions.

evidence-assessment

Evaluating the quality, provenance, and relevance of evidence that supports or undermines a claim. Covers source credibility, sampling quality, study design, levels of evidence (anecdote to meta-analysis), base rate integration, distinguishing primary from secondary sources, and calibrating belief to evidence strength. Use when the question is not whether an argument is valid but whether its premises are actually supported by the available data.

execution-grounded-selection

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experimental-design-ds

A/B testing, randomization, sample size calculation, confounding control, and causal inference for data science. Covers the full experimental lifecycle from hypothesis formulation through power analysis, randomization strategies, blocking, factorial designs, sequential testing, and the potential outcomes framework for causal claims. Use when designing experiments, planning A/B tests, calculating sample sizes, or reasoning about causation from data.

experimental-design-sci

Experimental design principles for scientific inquiry. Covers variable identification and control, control groups (positive and negative), randomization, blinding, sample size and power, replication strategies, factorial designs, quasi-experimental approaches, and common design pitfalls. Use when designing, reviewing, or teaching about controlled experiments in any scientific discipline.

experimental-methods

Experimental methods for physics including measurement, uncertainty analysis, and experimental design. Covers the scientific method applied to physics, the SI unit system, significant figures, uncertainty and error analysis (systematic vs. random, propagation of uncertainty), dimensional analysis (Buckingham Pi theorem), experimental design (controls, variables, reproducibility), data analysis (linear regression, chi-squared, curve fitting), lab safety, landmark physics experiments (Millikan, Cavendish, photoelectric effect, Michelson-Morley), graphical analysis, and order-of-magnitude estimation (Fermi problems). Use when designing experiments, analyzing data, reporting measurements, or making back-of-the-envelope estimates.

expository-writing

Expository and argumentative prose techniques for nonfiction. Covers essay structure (thesis-driven, exploratory, lyric), argumentation (claim-evidence-reasoning, counterargument, concession, Toulmin model), paragraph architecture (topic sentences, development, transitions, coherence), clarity and precision (Orwell's six rules, plain language, jargon management), research integration (source synthesis, attribution, paraphrase vs. quotation), and nonfiction forms (personal essay, op-ed, critical review, academic paper, reported piece). Use when writing nonfiction prose, constructing arguments, or analyzing expository structure.

feeding-pedagogy

The pedagogy of feeding — how to talk about food with children, what the Division of Responsibility model says, age-appropriate autonomy in eating, how to handle picky eating without creating disordered eating, and how to teach nutrition concepts to learners at different levels without either moralizing or oversimplifying. Use when a question is about raising, teaching, or advising a child or learner on eating, or when planning curriculum or parent guidance.

ffmpeg-media

FFmpeg media processing — video/audio conversion, trimming, encoding, filters, streaming. CLI and ffmpeg.wasm patterns.

field-identification

Identifying species in the field using dichotomous keys, gestalt recognition, diagnostic features, and habitat context. Covers the working identification protocol from first encounter through confidence-rated record, the vocabulary of field marks, the discipline of negative evidence, and the honest reporting of uncertain IDs. Use when the task is to name a living organism encountered in the field.

fieldwork-methods

Field observation, data collection, and research methods for geographic inquiry. Covers site selection and sampling strategies, field observation techniques (landscape reading, transects, quadrats), survey and interview methods for human geography, GPS and field mapping, environmental monitoring and instrumentation, data recording and field notebooks, ethical considerations in fieldwork, and the integration of field data with GIS analysis. Use when planning geographic field research, designing data collection protocols, evaluating field evidence, or connecting field observations to broader geographic analysis.

file-operation-patterns

Safe file operation patterns. Use when performing bulk file operations or writing deployment scripts.

finops-patterns

Provides FinOps practices for cloud cost optimization, budget management, and resource rightsizing. Use when analyzing cloud spend, optimizing costs, or when user mentions 'finops', 'cloud cost', 'rightsizing', 'budget', 'cost allocation', 'reserved instance', 'spot instance', 'showback', 'chargeback'.

fleet-mission

Parallel agent fleet dispatch with progress tracking and result aggregation. Launch N agents, monitor completion, merge results. Proven at 7-agent scale.

food-policy-and-politics

How nutrition science becomes dietary guidance, and how industry, agriculture, and politics shape that process. Covers the US Dietary Guidelines cycle, food labeling, WIC and SNAP, commodity subsidies, and the documented history of industry influence on research and recommendations. Use when a question asks why a guideline says what it says, how a recommendation got written, or whether an industry-funded study should be trusted.

food-technique-fundamentals

The fifteen fundamental cooking techniques that together cover most home kitchen work. Organized by the transformation they perform (heat transfer, water management, emulsion, ferment, cut) rather than by cuisine. Covers knife work, sauté, sear, braise, roast, poach, boil, steam, grill, bake, stew, reduce, deglaze, emulsify, and pickle/ferment, each with the physics, the signal, the common failure, and a diagnostic question. Use when teaching a cook, substituting a technique, or diagnosing why a dish failed.

form-analysis

Musical form and structural analysis covering binary, ternary, rondo, sonata, theme-and-variations, and popular song forms. Covers formal archetypes (AB, ABA, ABACA, sonata-allegro), 12-bar blues, arch form, minimalist process forms, strophic and through-composed designs, and formal analysis methodology for both score study and listening. Use when determining the structural plan of a piece, analyzing sectional relationships, or understanding how form shapes musical narrative.

formal-logic

Formal and informal logic for philosophical reasoning. Covers propositional logic (connectives, truth tables, tautologies), predicate logic (quantifiers, validity), syllogistic logic (Aristotle's original forms), natural deduction (introduction/elimination rules), modal logic (necessity, possibility, possible worlds), and a catalog of 15+ informal fallacies. Use when analyzing arguments, identifying logical form, evaluating validity and soundness, or detecting fallacious reasoning.

geometric-intuition

Spatial reasoning, coordinate geometry, transformations, and trigonometry for geometric problem solving. Covers Euclidean geometry (points, lines, angles, congruence, similarity), triangle geometry (Pythagorean theorem, laws of sines and cosines), circle geometry (tangent lines, inscribed angles, power of a point), coordinate geometry (distance, midpoint, slope, conic sections), transformations as functions (rotation, reflection, translation, dilation), trigonometry (unit circle, identities, inverse functions), and geometric proof techniques. Use when reasoning about shapes, angles, spatial relationships, coordinate problems, or trigonometric computations.

geopolitics

Spatial dimensions of political power, state sovereignty, territorial conflict, borders, international governance, and critical geopolitics. Covers classical geopolitics (Mackinder, Ratzel, Mahan), critical geopolitics (Said, O Tuathail), state territory and sovereignty, border theory, international organizations and governance, electoral geography, and postcolonial perspectives on power and space. Use when reasoning about territorial disputes, borders, international relations, state power, colonialism and its legacies, or the politics of geographic representation.

gitops-patterns

Provides GitOps best practices for ArgoCD, Flux, Argo Rollouts, and progressive delivery strategies. Use when setting up GitOps workflows, configuring continuous delivery, managing Kubernetes deployments declaratively, or when user mentions 'gitops', 'argocd', 'flux', 'progressive delivery', 'reconciliation', 'argo rollouts', 'canary', 'sealed secrets'.

goal-ambiguity-gate

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gource-visualizer

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grammar-syntax

Grammar and syntactic structures across human languages -- word order typology (SVO, SOV, VSO, VOS, OVS, OSV), morphological systems (isolating, agglutinative, fusional, polysynthetic), agreement patterns (gender, number, case, person), phrase structure, clause embedding, and cross-linguistic universals. Covers constituent analysis, dependency vs. constituency grammars, grammatical relations (subject, object, oblique), ergativity vs. accusativity, tense-aspect-mood systems, and how grammar encodes meaning differently across language families. Use when analyzing sentence structure, comparing grammar systems, teaching grammatical concepts, or understanding why a learner makes transfer errors from their L1.

gsd-guide

GSD tutorial, command reference, and workflow explainer. Explains what a GSD workflow command does before you run it. Activates when user is new to GSD, asks about commands, wants to understand workflows, or mentions preview.

gsd-migrate

Migrates existing projects to GSD structure without rewriting history. Activates when user mentions "migrate to GSD", "adopt GSD", "convert project", "brownfield GSD", or wants to add GSD to existing work.

gsd-onboard

GSD tutorial and command reference. Use when user is new to GSD or asks about commands.

gsd-preflight

Use when GSD commands are failing or .planning/ artifacts look inconsistent. Run before any GSD execute-phase or verify-work attempt to catch cross-artifact mismatches early.

gsd-trace

Traces decisions and requirements through GSD artifacts. Use when user asks "why did we...", "what happened to...", or mentions decision history.

gsd-workflow

Use when the user asks "what should I work on", mentions GSD phases, ROADMAP, or .planning/ artifacts. Routes to the correct GSD command for the current project state.

gupp-propulsion

Interrupt controller converting polled to proactive agent execution. Per-runtime strategies, configurable thresholds, Deacon heartbeat supervision. Fights LLM passivity bias.

harmony-analysis

Harmonic analysis, voice leading, chord function, and modulation techniques for tonal music. Covers triads, seventh chords, Roman numeral analysis, figured bass, voice leading rules, cadence types, secondary dominants, modulation techniques, chromatic harmony (Neapolitan, augmented sixth chords), jazz lead sheet notation, and functional vs. linear harmonic thinking. Use when analyzing chord progressions, writing voice leading, identifying key areas, or interpreting harmonic function in any tonal style.

historical-perspectives

Understanding and integrating multiple perspectives in historical analysis. Covers historical empathy (reconstructing how past actors understood their world), analyzing events from multiple viewpoints, constructing inclusive narratives that recover marginalized voices, and avoiding presentism (the imposition of contemporary values on past societies). Use when interpreting historical actors' motivations, assessing whose stories are told and whose are silenced, or guarding against anachronistic judgment.

historiography

Schools of historical thought, methodology debates, and the philosophy of history. Covers the major historiographical traditions (Annales, Marxist, feminist, postcolonial, subaltern, world-systems), their methodological commitments, their contributions and limitations, and the enduring debates about objectivity, narrative, and the nature of historical knowledge. Use when evaluating how different historians approach the same subject, understanding why historical interpretations change over time, or assessing the theoretical framework underlying a historical argument.

history-philosophy-science

The history and philosophy of science as a meta-discipline. Covers scientific paradigms and paradigm shifts, the nature of scientific theories versus hypotheses and laws, landmark discoveries as case studies in methodology, creativity and serendipity in science, the social and cultural context of scientific practice, and science-society relationships. Use when teaching, discussing, or evaluating the nature of science, its history, or its place in society.

holomorphic-dynamics

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hook-persistence

Pull-based work assignment channel implementing GUPP (Get Up and Push Protocol). Manages single-active-work-item hooks per agent with filesystem persistence and atomic state transitions.

hook-recipes

Curated collection of ready-to-use Claude Code hook recipes for safety, automation, formatting, logging, and context injection. Use when configuring hooks, setting up safety guards, automating workflows, or when user mentions 'hooks', 'PreToolUse', 'PostToolUse', 'guard', 'automation', 'claude hooks'.

household-economics-and-budgeting

The household as an economic unit with income, expenses, savings, and debt. Covers the envelope method, fixed vs variable expenses, the 50-30-20 baseline, emergency reserves, the true cost of ownership, opportunity cost in household decisions, and the distinction between a budget and a spending plan. Use when building a household budget, diagnosing why a household is always over, planning a major purchase, or teaching financial literacy at the household level.

household-systems-design

Designing the household as an operating system. Covers room-function mapping, work-triangle analysis, storage topology, utility flow, and the Richards/Beecher lineage that treats the home as an engineered environment rather than a stage set. Use when planning a new kitchen, reorganizing a room, diagnosing friction in a daily routine, or teaching a learner to see the house as a system with inputs, flows, and outputs.

human-computer-interaction

Human-computer interaction (HCI) as a discipline -- usability heuristics, interaction paradigms (CLI, GUI, touch, voice, gesture, spatial), accessibility, cognitive load theory, Fitts's law, user research methods, and the evolution of interfaces from punchcards to spatial computing. Use when evaluating interface usability, choosing interaction paradigms, applying accessibility standards, or understanding why some interfaces work and others fail. Broader than design-thinking -- this skill covers the science of how humans and computers communicate.

human-geography

Study of human activities, spatial patterns, and social processes on Earth's surface. Covers population and migration, cultural diffusion and landscapes, urbanization and city systems, economic geography and development, political geography and borders, and social/identity geographies. Use when reasoning about why people live where they do, how cultures spread, how cities grow, how economies are spatially organized, or how power operates through space.

human-impact-assessment

Assessing anthropogenic environmental impacts — pollution pathways, habitat destruction and fragmentation, land-use change, invasive species, overharvest, and extinction debt. Covers environmental impact assessment (EIA) methodology, exposure-effect relationships, population viability analysis, IPAT and ecological footprint frameworks, and strategic environmental assessment. Use when quantifying or forecasting human impacts on ecosystems, designing monitoring programs, or evaluating a proposed intervention against a baseline.

image-to-mission

Extract creative intent from images into executable build specs. Activates on images + build intent, "image to mission", "i2m", or capturing visual energy in code/design.

immersive-environment-design

Design heuristics for immersive environments — VR worlds, AR scenes, CAVE installations, responsive rooms. Covers scale and presence, lighting and atmosphere, sight-line composition, acoustic design, comfort-first layout, player/visitor flow, environmental storytelling, and the boundary between stage and audience. Includes Krueger's VIDEOPLACE heritage, Furness's Super Cockpit discipline, and contemporary guidelines for VR level design. Use when authoring or reviewing any environment whose purpose is to be experienced from within.

inclusive-physical-education

Inclusive physical education for gender, ability, and developmental variation. Covers the history of women in sport from Berenson's women's basketball rules forward, adapted PE for disability and chronic illness, universal design for learning in PE, gender-equitable participation, and the ethical obligations of a PE teacher to serve every learner in the room. Use when adapting lessons for disability, designing co-educational units, addressing participation gaps, or teaching the history of inclusion as part of the PE curriculum.

inferential-statistics

Drawing conclusions about populations from sample data. Covers sampling distributions, confidence intervals, hypothesis testing (z-tests, t-tests, chi-squared tests, ANOVA), p-values, significance levels, power, Type I and Type II errors, effect sizes, and the logic connecting sample statistics to population parameters. Emphasizes the distinction between statistical significance and practical significance. Use when testing hypotheses, constructing confidence intervals, designing studies, or interpreting inferential results.

informal-fallacies

Catalog of informal fallacies with definitions, canonical examples, and detection heuristics. Covers relevance fallacies (ad hominem, straw man, red herring, appeal to authority, appeal to emotion), presumption fallacies (false dichotomy, complex question, begging the question), ambiguity fallacies (equivocation, amphiboly, accent), causal fallacies (post hoc, slippery slope, correlation-causation), and statistical fallacies (hasty generalization, cherry-picking). Use when evaluating arguments for rhetorical or informal reasoning errors.

information-evaluation

Evaluating online information for credibility, accuracy, and context. Covers the SIFT method (Stop, Investigate, Find, Trace), lateral reading, reverse image search, primary source verification, and common misinformation tactics. Use when assessing the trustworthiness of a web page, article, video, social media post, or any digital claim before relying on it or sharing it.

information-literacy

Skills for finding, evaluating, and using information effectively and ethically across print and digital sources. Covers the research process (question formulation, source identification, evaluation, synthesis, citation), digital literacy (search strategies, database navigation, Boolean operators), source evaluation frameworks (CRAAP, SIFT, lateral reading), media literacy (news literacy, algorithmic curation, filter bubbles), ethical use of information (plagiarism, citation, fair use, intellectual property), and reading across multiple sources to build knowledge. Use when conducting research, evaluating sources, navigating digital information environments, teaching research skills, or addressing plagiarism and citation.

infrastructure-as-code

Provides Infrastructure as Code best practices for Terraform, Pulumi, CloudFormation, and OpenTofu. Use when provisioning infrastructure, writing IaC modules, managing cloud resources, scanning for misconfigurations, or when user mentions 'terraform', 'pulumi', 'cloudformation', 'IaC', 'opentofu', 'infrastructure', 'tfsec', 'checkov', 'drift'.

intelligence-investigator

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intent-router

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internal-arts-tai-chi-qigong

Traditional Chinese internal arts — tai chi chuan and qigong — as transmitted by classical lineages (Chen, Yang, Wu, Wu/Hao, Sun for tai chi; Ba Duan Jin, Yi Jin Jing, Liu Zi Jue, Wu Qin Xi, and other named sets for qigong) with an emphasis on alignment, rooted stance, breath-posture-mind coordination (the three harmonies), and the traditional lineage voice that Dr. Yang Jwing-Ming's YMAA line preserves. Also covers the safety boundary between traditional practice and clinical "medical qigong" claims. Use for queries about tai chi form learning, qigong set selection, internal-arts pedagogy, and the practical question of where to start.

international-trade

Theory and policy of international economic exchange. Covers comparative advantage (Ricardo, Heckscher-Ohlin), gains from trade, trade policy instruments (tariffs, quotas, subsidies), exchange rate determination, balance of payments, globalization dynamics, trade agreements, and the political economy of protectionism. Use when analyzing why countries trade, who wins and loses from trade, how exchange rates move, or the effects of trade policy interventions.

interpersonal-communication

Interpersonal communication theory and practice for one-on-one and small group interaction. Covers communication models (linear, transactional, constructivist), self-disclosure and Johari Window, relational dialectics, communication climate, supportive versus defensive communication, feedback models, and adapting style across relationships and contexts. Use when analyzing communication dynamics, improving relationships, giving feedback, or understanding communication breakdowns between individuals.

iron-and-steel-processes

Industrial production of iron and steel from ore to finished product — blast furnace, Bessemer converter, open-hearth, basic oxygen, electric arc, continuous casting, rolling, and secondary metallurgy. Covers the chemistry of decarburization, dephosphorization, and desulfurization, the metallurgy of plain carbon steels, the evolution from puddling and rolling to BOF and EAF, and the process-structure-property chain that makes mild steel the default structural material of the industrial era.

issue-triage-pr-review

Issue triage and PR review — scans issues, triages, fixes, submits PRs, then adversarially reviews all open PRs. Parallel agent dispatch with worktree isolation.

kp-applied-domain

Domain knowledge for 10 applied subjects: computer science, data science, world languages, psychology, environmental science, nutrition, economics, creative writing, logic, digital literacy. Use when generating Applied & Practical tier pack content.

kp-content-authoring

Generates knowledge pack content suites: vision documents, modules YAML, activities JSON, assessment frameworks, resource catalogs, and .skillmeta files. Shared by all 3 tier-specific author agents. Use when creating or updating pack content files.

kp-content-validation

Validates knowledge pack content against runtime schemas: .skillmeta against KnowledgePackSchema, modules against ModulesFileSchema, activities against PackActivitySchema. Checks cross-pack references, learning outcome uniqueness, and file completeness. Use when validating pack content after generation.

kp-core-academic-domain

Domain knowledge for 15 core academic subjects: math, science, technology, engineering, physics, chemistry, reading, critical thinking, problem solving, communication, history, geography, materials, business, statistics. Use when generating Core Academic tier pack content.

kp-pipeline-orchestration

Orchestrates knowledge pack content generation pipeline: batch scheduling, completion tracking, cross-pack dependency ordering, and validation triggering. Use when coordinating pack generation across phases 245-251.

kp-quality-review

Reviews knowledge pack quality: educational accuracy, grade-level appropriateness, accessibility compliance, learning pathway coherence, assessment alignment, and parallel instruction pattern conformance. Use when reviewing pack content after validation.

kp-specialized-domain

Domain knowledge for 10 specialized subjects: philosophy, theology, physical education, nature studies, home economics, visual arts, music, trades, astronomy, learning to learn. Use when generating Specialized & Deepening tier pack content.

kubernetes-patterns

Provides Kubernetes resource management, Helm chart patterns, service mesh configuration, and autoscaling strategies. Covers HPA, VPA, KEDA, operators, security contexts, and namespace isolation. Use when user mentions 'kubernetes', 'k8s', 'helm', 'istio', 'linkerd', 'service mesh', 'HPA', 'VPA', 'KEDA', 'pod security', 'resource quotas', 'operators'.

language-learning-strategies

Meta-cognitive and practical strategies for learning any language -- learner autonomy, goal setting, strategy taxonomy (Oxford's SILL framework), memory strategies, cognitive strategies (note-taking, summarizing, analyzing, reasoning), compensation strategies, metacognitive strategies (planning, monitoring, evaluating), affective strategies (managing anxiety, self-encouragement), social strategies (collaboration, questioning, empathy), immersion design, study habit optimization, plateau diagnosis, and motivation maintenance. Use when designing a language learning plan, diagnosing a learner's stuck points, selecting study methods, or building self-directed learning skills.

latex-authoring

LaTeX document authoring with arXiv submission best practices, Overleaf patterns, and academic publishing conventions.

literary-analysis

Interpretive methods for analyzing literary texts including fiction, poetry, drama, and creative nonfiction. Covers narrative elements (character, plot, setting, point of view, theme), literary devices (symbolism, imagery, irony, foreshadowing, allusion), critical lenses (formalist, reader-response, historical, feminist, postcolonial, psychoanalytic, Marxist), close reading of prose and poetry, intertextuality and influence, and the relationship between form and meaning. Use when interpreting literary texts, analyzing author craft, applying critical lenses, discussing theme and symbolism, or exploring how literary form creates meaning.

logical-reasoning

Deductive and inductive reasoning, formal and informal logical structure, validity, soundness, and rules of inference. Covers propositional logic, quantified reasoning, syllogisms, common inference patterns (modus ponens, modus tollens, hypothetical syllogism, disjunctive syllogism), and the distinction between deductive certainty and inductive probability. Use when the question is not whether a premise is true but whether the reasoning from premises to conclusion is logically valid.

machine-learning-foundations

Supervised and unsupervised learning, bias-variance tradeoff, cross-validation, decision trees, ensemble methods, neural network fundamentals, and the practitioner's workflow from problem framing through deployment. Covers classification, regression, clustering, dimensionality reduction, regularization, hyperparameter tuning, and evaluation metrics. Use when building predictive models, selecting algorithms, or understanding the machine learning pipeline.

macroeconomics

Analysis of aggregate economic phenomena -- GDP measurement, inflation dynamics, unemployment theory, monetary policy (central banks, interest rates, money supply), fiscal policy (government spending, taxation, debt), and the business cycle. Covers Keynesian, monetarist, and new classical perspectives. Use when analyzing national or global economic conditions, policy debates, economic growth, recessions, or the interaction between monetary and fiscal authorities.

mail-async

Durable asynchronous messaging channel for inter-agent communication. Implements write-once read-many filesystem mail using atomic writes and directory-based mailboxes.

martial-arts-body-discipline

Martial arts as body discipline — the shared pedagogical structure across striking, grappling, and weapon arts (stance, distance, timing, ukemi, live partner work, graded ranking, and the ethical container the best schools enforce). Covers karate, judo, jiu-jitsu (Brazilian and traditional Japanese), aikido, kendo/kenjutsu, boxing, muay Thai, and wrestling at enough depth that an agent can place a user into a reasonable first-month practice and recognize the safety failures that matter most. Leans on Moshé Feldenkrais's judo background and Yang Jwing-Ming's martial scholarship for the internal-to-external bridge. Use for any query about beginning a martial art, training injury patterns, graded progression, or the ethics of combat training.

materials-and-fit

Materials and fit for the trades — how wood, metal, stone, fabric, and composite materials behave, how they move with humidity and temperature, and how "fit" between parts is achieved in the presence of material behavior. Covers moisture content, thermal expansion, grain and fiber direction, elastic and plastic deformation, corrosion and finish interaction, and the traditional allowances that experienced tradespeople build into their work. Use when specifying materials, diagnosing a failed fit, or teaching a learner why traditional allowances exist.

materials-characterization

Measurement techniques for identifying composition, microstructure, and properties of engineering materials — optical and electron microscopy, x-ray diffraction, EDS and WDS spectroscopy, thermal analysis, mechanical testing, and fractography. Covers when to use which technique, sample-preparation pitfalls, and how to build a characterization plan that answers a specific engineering question rather than accumulating data for its own sake.

materials-chemistry

States of matter, phase transitions, kinetic molecular theory, atmospheric chemistry, green chemistry, and sustainable synthesis. Covers solid/liquid/gas/plasma properties, phase diagrams, vapor pressure, gas laws, ozone chemistry, greenhouse effect, the 12 principles of green chemistry, atom economy, solvent selection, and catalysis for sustainability. Use when reasoning about material properties, environmental chemistry, or designing greener chemical processes.