How does the AI code documentation generator work?

Connect your repository on GitHub, GitLab, Bitbucket, or Azure DevOps. DocuWriter reads your codebase, generates a full documentation tree, and the Autopilot AI Agent keeps it in sync as your code evolves.

What programming languages does this documentation tool support?

DocuWriter supports Python, JavaScript, TypeScript, Java, PHP, C#, Go, Rust, Ruby, Swift, Kotlin, and many more. The AI understands code semantics across all major languages.

Can DocuWriter generate API documentation and UML diagrams?

Yes. API references, Swagger/OpenAPI specifications, and UML diagrams are generated as connected parts of the complete codebase documentation, so they remain organized with the architecture and implementation they explain.

Does DocuWriter generate architecture and module documentation?

Yes. DocuWriter generates architecture overviews, module documentation, API references, and UML diagrams from your repository.

AI Code Documentation Tool

Generate complete AI code documentation for any codebase. In seconds, not months.

DocuWriter is an AI-powered platform for creating and managing complete, structured documentation for entire codebases. Teams can connect repositories and generate documentation covering architecture, modules, services, classes, functions, dependencies, APIs, diagrams, READMEs, and other technical components. It supports both individual repositories and larger multi-repository systems. Everything is centralized in one documentation system and kept aligned with the code as it evolves.

Get started Read FinLocker case study →

Used at

EXPLORER

src/

controllers/

UserController.php

PaymentService.ts

models/

User.py

services/

AuthService.java

UML Sequence Diagram

Client

Auth

verify(token)

user_row

JWT

API API Reference

GET/api/usersList all users

POST/api/paymentsCreate charge

PUT/api/users/:idUpdate user

DEL/api/sessionsLogout

DOC Code Documentation

The problem

Most engineering teams have no documentation. Or what they have is three years out of date.

"We inherited a 12-year-old codebase and nobody knows how it works anymore."

– every engineering team ever

"Our docs are so stale that nobody trusts them. We just ask the senior engineer."

– the senior engineer who is tired

"We're onboarding eight new hires next quarter and they can't find anything."

– the head of engineering writing this on a flight

How it works

Three steps. No documentation team required.

Connect your repo

GitHub, GitLab (incl. self-hosted), Bitbucket, Azure DevOps. OAuth or PAT. Two clicks.

DocuWriter reads your code

We analyze your codebase with AST parsing and a code-aware retrieval pipeline, not an LLM editing prose. The result is a complete, hierarchical documentation tree grounded in your actual source.

Review, publish, keep it fresh

Edit anything in our editor. Publish to a private team space or a public-facing site. Autopilot watches your repo and opens reviewable update suggestions every time the code changes.

Use cases

Built for codebases like yours.

The five reasons our customers actually buy.

Inherited an undocumented codebase

"We bought / merged / inherited 12 years of code with no docs."

→ Tree Documentation Generator

Documentation rot

"Our docs were great in 2022. Now nobody trusts them."

→ Automated documentation

Onboarding new engineers

"New hires spend their first month asking the same questions."

→ Spaces + AI Q&A

Compliance & audits

"The auditor wants architecture, API, and module documentation by Friday."

→ Full-tree + UML + API Documentation

Handoffs & migrations

"We're handing this codebase to a partner / acquirer / new team."

→ Generate, edit, export to Markdown / Word / PDF / Confluence / Git

Autopilot AI Agent

Documentation that maintains itself.

Most documentation tools assume you'll write everything yourself and remember to keep it updated. You won't. Nobody does.

DocuWriter's Autopilot is the AI documentation tool that watches your connected repositories. When code changes (every push, every merged PR) it reviews the diff, identifies which documents are now wrong, and opens a reviewable suggestion. This is real automatic code documentation: Approve, discard, or edit before anything is published.

Notifications go to Slack, Teams, Google Chat, or your custom webhook. Auto-apply rules let you skip review for low-risk doc-only edits. High-confidence suggestions can be applied automatically; sensitive ones always wait for a human.

See how automated documentation works →

Suggestions inbox All repos 5 pending

94%

AuthService.refresh() signature changed: 2 docs affected

web · main·commit a4f2c81·2m ago

91%

New endpoint POST /v2/billing/invoices: add to API Reference

billing-api · main·PR #482·14m ago

87%

RetryPolicy renamed to BackoffStrategy: update 4 references

core · main·PR #1207·1h ago

72%

Architecture diagram may be stale: 3 new modules detected

web · main·commit 7d3e9f0·3h ago

58%

Possible deprecation: useLegacyClient. Last used 6 months ago

sdk-js · main·commit 0b1c4d2·yesterday

Generators

Code documentation, API docs, and UML. No diluted feature sprawl.

Documentation Tree

Complete book-style docs for entire repos.

API Reference

OpenAPI / Swagger / Postman from your code.

UML Diagrams

Class and sequence diagrams (Mermaid / PlantUML).

A focused documentation workflow for teams that need code docs, API references, and diagrams to stay current.

Side by side

How it's different from a hosting platform.

Capability

DocuWriter

Mintlify / GitBook / ReadMe

Works for codebases with no existing docs

✓ Yes

✕ Assumes docs already exist

Generates from raw source. No MDX or DSL required

✓ Yes

✕ Authoring in MDX / proprietary DSL

Exports to Confluence, Word, Markdown, PDF, Git

✓ Built-in

✕ Hosted on their domain only

Keeps docs in sync with code automatically

✓ Autopilot

Mostly notifications and AI editor assist

Code docs, API docs, and UML diagrams

✓ Built-in

✕ Not available

GitHub, GitLab, Bitbucket & Azure DevOps support

✓ All native

GitHub only (Azure DevOps / Bitbucket limited or none)

Per-seat fees

✓ None

$20–30/seat is common

Starts at

$49/mo

$250–550/mo

Last verified April 2026 against publicly listed plans.

Pricing

Keep every codebase documented.

Professional

For developers and small teams.

$49 / month

200 AI pages / month
5 Knowledge Spaces
Unlimited pages and storage
AI Assistants
Chat with Codebase
Slack AI Agent
Premium Models
MCP & API

Get started →

Enterprise

For growing engineering teams.

$129 / month

500 AI pages / month
Unlimited Knowledge Spaces
Full codebase documentation
Full API documentation
Team roles & free seats
Autopilot auto-updates
Audit log
Priority support
Everything in Professional

Get started →

Unlimited

For high-volume documentation.

$299 / month

Unlimited AI pages
Personalized onboarding
Dedicated success manager
Dedicated support channel
Early access
Everything in Enterprise

Get started →

Looking for something lighter? Start with the Starter plan: 50 credits/mo for $20/mo. Yearly billing available with 4 free months.

Need SSO, self-hosted runtime, or custom volume? Talk to us about a Custom plan →

For AI agents

Already built for what's next.

Every DocuWriter space publishes as an MCP server with 70+ tools, plus llms.txt and llms-full.txt by default. Cursor, Claude, ChatGPT, and any MCP client can read, search, and update your documentation natively. No extension required.

Read the MCP server guide →

Generate complete AI code documentation for any codebase. In seconds, not months.

Most engineering teams have no documentation. Or what they have is three years out of date.

Three steps. No documentation team required.

Connect your repo

DocuWriter reads your code

Review, publish, keep it fresh

Built for codebases like yours.

Inherited an undocumented codebase

Documentation rot

Onboarding new engineers

Compliance & audits

Handoffs & migrations

Documentation that maintains itself.

Code documentation, API docs, and UML. No diluted feature sprawl.

Documentation Tree

API Reference

UML Diagrams

How it's different from a hosting platform.

Keep every codebase documented.

Already built for what's next.

Stop putting off the documentation project. Connect a repo. Have a complete documentation set in seconds.

Stop putting off the documentation project.
Connect a repo. Have a complete documentation set in seconds.