API docs for AI coding agents
Turn API documentation into Markdown your coding agent can use
Convert an entire library, SDK, or framework documentation site into one clean Markdown file. Give Claude Code, GitHub Copilot, ChatGPT, and other coding agents complete, up-to-date technical context.
Convert documentation to Markdown
Google sign-in is required to start a conversion.
Built for the tools developers already use
Works with the tools you already use. Explore example Markdown downloads: OpenAI API documentation, X developer documentation, Tailwind CSS documentation.
Why coding agents generate outdated or invalid API calls
Coding agents can only work with the context they receive. When documentation is missing, fragmented, or out of date, they may invent methods, use deprecated options, or combine incompatible library versions.
Outdated training data
Libraries and SDKs change faster than model training cycles. An agent may suggest methods or parameters that were renamed, deprecated, or removed.
Fragmented copy and paste
Pasting individual documentation snippets into a chat omits related endpoints, configuration details, and examples while consuming valuable context.
Multiple disconnected dependencies
Production applications depend on several frameworks, SDKs, and services. Coding agents need consistent documentation across the full stack.
Give your coding agent complete documentation context
SiteToMarkdown crawls a documentation website and organizes its pages into Markdown that can be searched, stored, versioned, and added to an AI coding workflow.
Convert complete documentation sites
Capture endpoints, configuration options, guides, and code examples in one portable Markdown file.
Add docs to project context
Place the output in your repository or coding-agent instructions so documentation is available alongside your code.
Refresh after library updates
Run the conversion again when a framework, SDK, or API publishes a new version.
Combine documentation sources
Create a shared context from multiple libraries and services for applications with complex dependency stacks.
Store and review documentation changes
Keep generated Markdown in version control to review changes alongside application updates.
Start with a public API, SDK, library, or framework documentation site.
From documentation website to coding-agent context
Enter the documentation URL
Paste the starting URL for an API, library, SDK, or framework documentation site.
Convert the site
SiteToMarkdown collects the relevant documentation pages and converts their content into structured Markdown.
Add the file to your workflow
Download the Markdown and add it to your repository, coding-agent context, knowledge base, or retrieval pipeline.
Use fresh documentation across your development workflow
Claude Code
Store generated documentation in your project and reference it from your Claude Code instructions or workflow files.
SiteToMarkdown for Claude Code →GitHub Copilot
Add relevant documentation to the workspace so Copilot can use it alongside your application code.
SiteToMarkdown for GitHub Copilot →ChatGPT
Upload or reference converted documentation when building a custom GPT or working in a documentation-aware project.
SiteToMarkdown for ChatGPT →RAG workflows
Index Markdown in your retrieval system to provide relevant documentation sections at generation time.
API and CI automation
Automate documentation refreshes when dependencies change or new documentation versions are released.
Read the SiteToMarkdown API docs →Prompts to run on your Markdown
Attach the converted documentation to your coding agent or chat, paste a prompt, and swap in your language, framework, and target endpoints. Each prompt keeps the model inside the docs, so gaps show up as unverified assumptions instead of invented API calls.
Implement an integration from the docs
Using only the attached API documentation, write a [language] client for [task, for example creating and listing orders]. Cover authentication, the exact endpoints and request and response shapes, pagination, rate limits with retry and backoff, and error handling. Add a comment with the documentation URL above each call. If the docs do not specify something, list it under 'Unverified assumptions' instead of guessing.
Breaking changes and migration plan
Compare the changelog and migration guide pages in the attached Markdown between v[X] and v[Y]. List the breaking changes and deprecations, the endpoints, parameters, or SDK methods affected, the code change required for each, and a migration checklist ordered by risk. Include the source URL for each item and mark anything the docs leave ambiguous.
Agent instructions file (CLAUDE.md, AGENTS.md, or Copilot instructions)
From the attached library documentation, write a concise instructions section for our coding agent: canonical installation and initialization, the authentication pattern, preferred idioms with short examples, common pitfalls, and deprecated APIs to avoid with their replacements. Keep it under 60 lines, link each rule to its documentation page, and omit anything the docs do not support.
Integration test plan
For every endpoint used in [feature], derive an integration test plan from the attached docs: the happy path, documented error codes, authentication failures, pagination boundaries, rate limiting (429) and idempotency behavior, and webhook signature verification if described. For each case give the request, the expected response, and the assertion, and flag any behavior that needs to be verified in a sandbox.
Looking for more? Browse prompts for every use case in the prompt guide →
See what your coding agent receives
Before: a documentation website
Side navigation, multiple pages, repeated headers and footers, and disconnected endpoint references.
After: clean Markdown output
# Authentication
## Create an access token
### Request
POST /oauth/token
### Parameters
- `client_id`
- `client_secret`
- `grant_type`
### Example
POST /oauth/token HTTP/1.1
Content-Type: application/json
Authorization: Bearer <token>Navigation, headings, code examples, tables, and endpoint details are organized into a portable text format that coding tools can process.
Download a Markdown ExampleUseful across the software development lifecycle
Build against unfamiliar APIs
Give a coding agent the full documentation set before asking it to implement an integration.
Upgrade libraries safely
Refresh the documentation when moving to a new version and use it while identifying changed methods or configuration options.
Standardize team context
Store the same documentation snapshot with the project so developers and coding agents reference a consistent source.
Build documentation-aware assistants
Use converted Markdown as source material for internal developer tools, support agents, and retrieval systems.
Automate documentation updates
Trigger new conversions from scripts or CI workflows when an important dependency changes.
Frequently asked questions
What documentation sites can I convert?
SiteToMarkdown is designed for public API, SDK, library, and framework documentation websites. Conversion results may vary based on the site’s structure and access restrictions.
Can I use the Markdown with Claude Code or GitHub Copilot?
Yes. Download the Markdown and add it to the project or context sources available to your coding tool.
Does SiteToMarkdown keep API documentation up to date automatically?
You can rerun a conversion whenever the source documentation changes, then replace the older Markdown file in your repository or knowledge base. Use the SiteToMarkdown API to schedule or trigger refreshes from scripts or CI workflows.
Can I combine documentation from several libraries?
Yes. Convert each documentation source and combine the resulting Markdown files in your repository, knowledge base, or retrieval workflow.
Does converting documentation eliminate hallucinations?
No tool can guarantee that an AI model will never produce an incorrect answer. Fresh, complete documentation gives coding agents better source context and can reduce suggestions based on outdated APIs.
Can I automate conversions?
Use the SiteToMarkdown API to incorporate documentation conversion into scripts or CI workflows.
Is private documentation supported?
SiteToMarkdown is designed for publicly accessible documentation. Sites that require authentication or are otherwise not publicly reachable are generally not supported.
Give your coding agent the documentation it needs
Convert API, SDK, library, or framework documentation into clean Markdown for your next development task.
Pay-as-you-go from $0.04 per page. Google sign-in required. No credit card needed to sign in.