Writing is one of the highest-leverage tasks you can hand to an AI agent — and one of the easiest to make inconsistent. Without a skill, the agent improvises tone, format, and depth each time. With a skill, every PRD, changelog, RFC, and postmortem follows the same structure.
Here's a breakdown of the most useful writing skills for developers and product teams.
Why writing skills are worth it
When an agent writes a PRD without a skill, it invents a structure. When it writes a changelog, it decides for itself what to include. The output is often good — but not your team's format, not your stakeholder's expectations, not your established style.
A writing skill externalises the template. The agent fills it in from context rather than inventing it.
Product requirement documents (PRDs)
A PRD skill is one of the highest-ROI writing skills you can have. It defines:
- Which sections to include (problem statement, user stories, success metrics, out of scope, open questions)
- How detailed each section should be
- What format user stories follow ("As a [user], I want to [action] so that [outcome]")
- What makes something explicitly out of scope
- What goes in open questions vs assumptions
# prd-writer
## Purpose
Generate product requirement documents from a feature description or problem statement.
Activate when asked to write a PRD, spec, or requirements document.
## Instructions
1. Identify the core problem being solved (one sentence)
2. Define the target user(s)
3. Write 3-5 user stories in "As a / I want / So that" format
4. Define 2-3 measurable success metrics
5. List explicitly what is out of scope for this version
6. Surface 3-5 open questions that need answers before implementation
## Output format
# [Feature Name] — PRD
**Problem**: [one sentence]
**Target users**: [who]
**Owner**: TBD | **Status**: Draft
## User stories
[list]
## Success metrics
[list with measurement approach]
## Out of scope (v1)
[list]
## Open questions
[list]
Changelogs and release notes
A changelog skill reads your git log (or a list of PRs) and produces structured release notes in your team's format. Specify which commit types to include, how to group them, whether to include PR references.
| Type | Conventional Commits prefix | Include in changelog? |
|---|---|---|
| Features | feat: | Always |
| Bug fixes | fix: | Always |
| Performance | perf: | Usually |
| Refactoring | refactor: | Sometimes — only user-visible |
| Chore / CI | chore: ci: | No |
| Style | style: | No |
A skill can enforce this classification automatically. Your changelog always groups the same way, always omits the same things.
RFC and architecture decision records
RFCs and ADRs have a well-known structure — context, decision, consequences. A skill makes the agent fill in each section from what you give it, rather than writing a free-form document.
What a strong ADR skill produces:
- Context: what situation led to this decision?
- Decision: what was chosen?
- Rationale: why this option over alternatives?
- Alternatives considered: what else was evaluated and rejected?
- Consequences: what changes as a result? What tradeoffs?
- Status: proposed | accepted | deprecated | superseded
Postmortems and incident reports
Postmortem skills are valuable because incident reports written under pressure (right after an incident) are often incomplete and blame-adjacent. A skill enforces the blameless format:
- Timeline of events (not who did what — what happened when)
- Impact (users affected, duration, severity)
- Root cause (technical factors — not "human error")
- Contributing factors
- What went well
- Corrective actions with owners and due dates
Technical runbooks
A runbook skill generates operational procedures from a description: the steps to run a deployment, handle a specific type of alert, or recover from a known failure mode. Useful for capturing institutional knowledge before it walks out the door.
Finding writing skills
npx mdskill search "prd"
npx mdskill search "changelog"
npx mdskill search "postmortem"
Or browse the writing category.
npx mdskill add owner/repo/skill-name
Building a custom writing skill for your team
The most effective writing skills are team-specific — your PRD format, your RFC template, your style guide. A custom skill encodes the exact structure your stakeholders expect.
See how to build an agent skill for the full process. Writing skills are among the fastest to write — the template is usually well-defined, and the Instructions section is just: read the input, fill in these sections.
What's next?
- Browse writing skills in the directory
- Pair with a docs generation skill for a full writing workflow
- Share writing skills across your team's agents