better-auth/agent-auth.

agent-auth-cli

Use the Agent Auth CLI (auth-agent) to discover providers, connect agents, manage capabilities, and execute operations. Use when the user wants to interact with an Agent Auth provider from the terminal, authenticate an agent, execute capabilities, or manage agent connections.

agent-auth-connectors

Reliable workflow for using Agent Auth connector capabilities (Gmail and any other provider exposed through the agent-auth tools) — discovering capabilities, connecting an agent per provider, scoping grants with constraints, executing calls, and decoding failure codes. Use whenever a request involves reading or acting on a user's connected account through agent-auth — reading/searching email, listing threads, fetching messages, deploying, or any "check my [provider]" task that routes through agent-auth search / connect_agent / execute_capability. Trigger it even when the user phrases it casually ("read my last email", "what's in my inbox", "did I get a reply").

agent-auth-mcp

Use the Agent Auth MCP tools to discover providers, connect agents, manage capabilities, and execute operations through the MCP protocol. Use when working inside an MCP-enabled environment (Cursor, Claude Code, etc.) and need to authenticate agents, execute capabilities, or interact with Agent Auth providers.