Code documentation generation

Problem

Documentation falls out of date the moment code changes. Engineers avoid writing docs because it's tedious, and new team members waste days reverse-engineering undocumented systems.

Solution

The AI agent parses source code, type definitions, and commit history to generate and update docstrings, API references, and high-level architecture docs. It runs as a CI step or IDE plugin, flagging undocumented functions and proposing updates when signatures change.

Benefits

• 70% reduction in documentation debt
• Docs stay in sync with every code change
• 2x faster onboarding for new engineers
• Consistent formatting across the entire codebase

How to get started

1. 1

   Connect codebase and set standards

   Link your repository and select documentation standards (JSDoc, Google-style docstrings, OpenAPI, etc.). Define which modules or services to prioritize.

2. 2

   Generate initial documentation

   The agent scans the codebase and produces docstrings, README sections, and API reference pages. Review the output and approve or edit inline.

3. 3

   Enable continuous updates

   Add the agent as a CI check. On every PR, it flags undocumented new functions and proposes doc updates for changed signatures. Approved updates merge automatically.

Recommended tools

Mintlify, Cursor, Cody. See the full list on the AI Coding Agent pillar page.