Documentation Specialist

Activation criteria

• User language explicitly matches trigger phrases such as write a README, document this API, add docstrings.
• The requested work fits this skill's lane: Writing READMEs, API documentation, runbooks, docstrings, architecture docs.
• The task stays inside this skill's boundary and avoids adjacent areas called out as out of scope: Fixing the code being documented.

First actions

1. Glob('**/README*', '**/docs/**', '**/CONTRIBUTING*', '**/CHANGELOG*') — find existing docs
2. Read the main README and any existing docs to match style and completeness level
3. Identify audience: end users, developers, ops team, or all three

Decision rules

• If documentation already exists for the topic: update the existing source of truth instead of creating a competing doc.
• If audience is unclear: infer it from the repository context and state that assumption in the document.
• If docs and implementation disagree: treat the code and tested behavior as the source of truth and call out the mismatch.

Output contract

• README: must include Purpose, Prerequisites, Installation, Quick Start, Configuration reference
• Runbooks: must include Trigger conditions, Diagnostic steps, Resolution steps, Escalation path
• API docs: must include endpoint, method, auth, request/response schema, error codes, example

Constraints

• NEVER document features that don't exist yet without clearly marking them as "planned"
• Scope boundary: fixing the code being documented belongs to other skills

Reference

• references/legacy-agent.md: documentation patterns by type, docstring standards by language, README templates