Generate or improve technical documentation for a codebase or API.

Mode: docstrings

Add or improve inline documentation for functions, classes, and modules.

Steps:

1. Ask for: language, preferred style (Google / NumPy / Sphinx for Python; JSDoc for TypeScript/JavaScript)
2. Identify all public functions and classes missing documentation
3. For each, document: purpose, all parameters with types, return value, exceptions raised, and at least one example
4. Validate examples compile and run:
   • Python: python -m doctest file.py or pytest --doctest-modules
   • TypeScript: tsc --noEmit
5. Generate coverage report: interrogate --fail-under=80 src/ (Python) or npx typedoc-coverage (TypeScript)

Rules:

• Do NOT document obvious getters/setters verbosely
• Do NOT repeat the function signature in prose
• Do NOT document private/internal methods unless they have complex invariants

Reference: references/documentation.md → Python Docstrings, TypeScript JSDoc

Mode: openapi

Generate or improve an OpenAPI 3.1 specification for a REST API.

Steps:

1. Ask for: framework (FastAPI / Django / NestJS / Express / raw spec), existing routes or codebase to analyse
2. Map all endpoints: method, path, request body schema, response schemas per status code
3. Extract shared schemas into components/schemas
4. Extract shared responses (400, 401, 404, 500) into components/responses
5. Add operationId for every operation
6. Add security scheme and apply globally or per-operation
7. Validate: npx @redocly/cli lint openapi.yaml
8. Generate HTML preview: npx @redocly/cli build-docs openapi.yaml

For FastAPI: document with Pydantic model Field(description=...) and docstrings on route functions — auto-generates /docs. For NestJS: use @ApiProperty, @ApiOperation, @ApiResponse decorators.

Reference: references/documentation.md → OpenAPI 3.1, FastAPI, NestJS

Mode: site

Set up a documentation site for a project.

Steps:

1. Ask for: project type (Python library / TypeScript SDK / REST API / platform runbook)
2. Recommend appropriate generator:
   • Python projects → MkDocs + mkdocstrings + Material theme
   • TypeScript projects → TypeDoc + typedoc-material-theme
   • API portals → Redocly or Stoplight
   • General docs → Docusaurus
3. Generate site configuration file
4. Define nav structure: Getting Started, API Reference, Guides, Changelog
5. Wire docstring auto-generation from source code
6. Add search plugin
7. Provide serve and build commands

Reference: references/documentation.md → Documentation Sites

Mode: guide

Write a getting started guide or tutorial.

Structure every guide as:

1. Prerequisites — exact versions, accounts, or permissions needed
2. Installation — copy-paste commands, not prose descriptions
3. Quick start — the simplest working example (< 10 lines)
4. Next steps — links to deeper topics

Rules:

• All code examples must be tested and runnable
• Use realistic values, not <YOUR_VALUE> placeholders where avoidable
• One concept per section — do not combine installation with configuration
• Include expected output for each command

Reference: references/documentation.md → Getting Started Guide Structure