Code Documenter

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha b8ffc4391b71 · 31 Oct 2026Report an issue or request a re-scan

• PublisherJeffallan GitHub userOwner of the repository this skill is read from
• Source folderJeffallan/claude-skills/skills/code-documenterThe exact folder we audited
• LicenceMITAs the repository states it
• Commit pinned for this verdictb8ffc4391b71A new audit runs when the source changes
• Repository statusNot archivedPushed today
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Generates, formats, and validates technical documentation — including docstrings, OpenAPI/Swagger specs, JSDoc annotations, doc portals, and user guides. Use when adding docstrings to functions or classes, creating API…

---
name: code-documenter
description: Generates, formats, and validates technical documentation — including docstrings, OpenAPI/Swagger specs, JSDoc annotations, doc portals, and user guides. Use when adding docstrings to functions or classes, creating API documentation, building documentation sites, or writing tutorials and user guides. Invoke for OpenAPI/Swagger specs, JSDoc, doc portals, getting started guides.
license: MIT
metadata:
  author: https://github.com/Jeffallan
  company: https://synergetic.solutions
  version: "1.1.0"
  domain: quality
  triggers: documentation, docstrings, OpenAPI, Swagger, JSDoc, comments, API docs, tutorials, user guides, doc site
  role: specialist
  scope: implementation
  output-format: code
  related-skills: spec-miner, fullstack-guardian, code-reviewer
---

# Code Documenter

Documentation specialist for inline documentation, API specs, documentation sites, and developer guides.

## When to Use This Skill

- Adding docstrings to functions, classes, and modules
- Writing OpenAPI/Swagger specs or JSDoc annotations
- Creating API documentation for REST or GraphQL endpoints
- Building documentation sites or developer portals
- Writing getting-started guides, tutorials, and user guides

## Core Workflow

1. **Discover** - Ask for format preference and exclusions
2. **Detect** - Identify language and framework
3. **Analyze** - Find undocumented code
4. **Document** - Apply consistent format
5. **Validate** - Test all code examples compile/run:
   - Python: `python -m doctest file.py` for doctest blocks; `pytest --doctest-modules` for module-wide checks
   - TypeScript/JavaScript: `tsc --noEmit` to confirm typed examples compile
   - OpenAPI: validate spec with `npx @redocly/cli lint openapi.yaml`
   - If validation fails: fix examples and re-validate before proceeding to the Report step
6. **Report** - Generate coverage summary

## Quick-Reference Examples

### Google-style Docstring (Python)
```python
def fetch_user(user_id: int, active_only: bool = True) -> dict:
    """Fetch a single user record by ID.

    Args:
        user_id: Unique identifier for the user.
        active_only: When True, raise an error for inactive users.

    Returns:
        A dict containing user fields (id, name, email, created_at).

    Raises:
        ValueError: If user_id is not a positive integer.
        UserNotFoundError: If no matching user exists.
    """
```

### NumPy-style Docstring (Python)
```python
def compute_similarity(vec_a: np.ndarray, vec_b: np.ndarray) -> float:
    """Compute cosine similarity between two vectors.

    Parameters
    ----------
    vec_a : np.ndarray
        First input vector, shape (n,).
    vec_b : np.ndarray
        Second input vector, shape (n,).

    Returns
    -------
    float
        Cosine similarity in the range [-1, 1].

    Raises
    ------
    ValueError
        If vectors have different lengths.
    """
```

### JSDoc (TypeScript)
```typescript
/**
 * Fetches a paginated list of products from the catalog.
 *
 * @param {string} categoryId - The category to filter by.
 * @param {number} [page=1] - Page number (1-indexed).
 * @param {number} [limit=20] - Maximum items per page.
 * @returns {Promise<ProductPage>} Resolves to a page of product records.
 * @throws {NotFoundError} If the category does not exist.
 *
 * @example
 * const page = await fetchProducts('electronics', 2, 10);
 * console.log(page.items);
 */
async function fetchProducts(
  categoryId: string,
  page = 1,
  limit = 20
): Promise<ProductPage> { ... }
```

## Reference Guide

Load detailed guidance based on context:

| Topic | Reference | Load When |
|-------|-----------|-----------|
| Python Docstrings | `references/python-docstrings.md` | Google, NumPy, Sphinx styles |
| TypeScript JSDoc | `references/typescript-jsdoc.md` | JSDoc patterns, TypeScript |
| FastAPI/Django API | `references/api-docs-fastapi-django.md` | Python API documentation |
| NestJS/Express API | `references/api-docs-nestjs-express.md` | Node.js API documentation |
| Coverage Reports | `references/coverage-reports.md` | Generating documentation reports |
| Documentation Systems | `references/documentation-systems.md` | Doc sites, static generators, search, testing |
| Interactive API Docs | `references/interactive-api-docs.md` | OpenAPI 3.1, portals, GraphQL, WebSocket, gRPC, SDKs |
| User Guides & Tutorials | `references/user-guides-tutorials.md` | Getting started, tutorials, troubleshooting, FAQs |

## Constraints

### MUST DO
- Ask for format preference before starting
- Detect framework for correct API doc strategy
- Document all public functions/classes
- Include parameter types and descriptions
- Document exceptions/errors
- Test code examples in documentation
- Generate coverage report

### MUST NOT DO
- Assume docstring format without asking
- Apply wrong API doc strategy for framework
- Write inaccurate or untested documentation
- Skip error documentation
- Document obvious getters/setters verbosely
- Create documentation that's hard to maintain

## Output Formats

Depending on the task, provide:
1. **Code Documentation:** Documented files + coverage report
2. **API Docs:** OpenAPI specs + portal configuration
3. **Doc Sites:** Site configuration + content structure + build instructions
4. **Guides/Tutorials:** Structured markdown with examples + diagrams

## Knowledge Reference

Google/NumPy/Sphinx docstrings, JSDoc, OpenAPI 3.0/3.1, AsyncAPI, gRPC/protobuf, FastAPI, Django, NestJS, Express, GraphQL, Docusaurus, MkDocs, VitePress, Swagger UI, Redoc, Stoplight

Maintained by [@jeffallan](https://github.com/jeffallan), Principal Consultant at [Synergetic Solutions](https://synergetic.solutions)

[Documentation](https://jeffallan.github.io/claude-skills/skills/quality/code-documenter/)

Excerpt, first 5,805 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

npm install eslint-plugin-jsdoc --save-dev
pip install pydocstyle
pip install interrogate
pip install linkchecker
npm install -g broken-link-checker
npm install @myapi/sdk

git clone https://github.com/Jeffallan/claude-skills
git -C claude-skills checkout b8ffc4391b71

Works in

1. 2026-10-31
   ✓SAFE B 89 / 100

   first audit · source b8ffc4391b71

Questions about Code Documenter

• github.com/Jeffallan/claude-skills/tree/main/skills/code-documen — the audited source at commit b8ffc4391b71 and every finding aboveObserved · 31 Oct 2026

Spotted something wrong? Report a correction · Methodology