API documentation that stays in sync with your API
Import an OpenAPI spec and get a typed reference, generated code samples, and a live try-it console. AI workflows watch your repository and update the reference when the API changes.
The world's best product teams trust Documentation.AI
From next-gen start-ups to established enterprises.
Reference docs rot faster than anything else you publish
The spec is versioned, tested, and reviewed. The page describing it usually is none of those things.
- The spec moved, the page did not
- A new field, a changed status code, a renamed parameter. None of them announce themselves on the page that documents them.
- Code samples maintained by hand
- Five languages across dozens of endpoints, all written manually, all quietly wrong after the first breaking change.
- Developers leave the page to test
- Reading in one tab and rebuilding the request in another is friction at the exact moment you were about to convert.
- Support answers what the reference should
- Every ambiguous parameter description turns into a ticket, and the ticket almost never makes it back into the docs.
Import the spec. Get the reference, the samples, and the console.
Point a navigation group at an OpenAPI file and Documentation.AI generates the reference. Point one page at a single operation when you want to write the rest yourself.
- Auto mode generates parameters, descriptions, request examples, responses for every status code, and the playground
- Custom mode injects only the playground and examples, leaving the rest of the page to you
- Readers choose from the servers your spec defines, override variables, and keep that choice between sessions
- Parameters with multiple examples render as a dropdown picker rather than an empty text field
- The request builder handles JSON, multipart/form-data, and form-urlencoded, generating matching cURL and JavaScript
- Run API sync from code after a merge to review reference changes driven by the repository
Every endpoint page is readable by AI agents through llms.txt and the MCP server, so the coding assistant your customer is pairing with works from your current spec.
A reference developers can run
Generated from the spec, testable on the page, and kept in step by the repository.
A console, not a code block
The playground builds a request form from your OpenAPI specification and returns real responses, so developers test an endpoint on the page that documents it. Authentication schemes from your spec are supported.
Samples in five languages
Request examples are generated in cURL, Python, JavaScript, Go, and Ruby, and response examples cover every status code the spec declares. Multi-example responses can collapse into a dropdown.
Kept in step with the repository
API sync from code reviews changes that affect API documentation and generates updates from repository context, triggered by a pull request merge or on a schedule.
From spec to published reference
One configuration line does the work that a reference site usually needs a team for.
One line of navigation configuration turns a spec file into a full reference.
cURL, Python, JavaScript, Go, and Ruby request examples, generated for you.
Real requests against the servers your spec defines, sent from the docs page.
Your reference is readable by the AI tools your developers already run.
“Documentation.AI helps us see what users are actually asking inside our docs, so we can identify gaps and improve our documentation more regularly.”
Frequently asked questions
What API teams check before pointing developers at a new reference.
How much of the page is generated?
As much as you want. Auto mode generates the full page from the spec, including parameters, descriptions, examples, and the playground. Custom mode injects only the playground and examples so you control the surrounding content.
Can I document a single endpoint on a custom page?
Yes. A page can reference one operation from your spec, for example the POST /users operation, and embed just the playground and the examples for it.
Does the playground handle authentication and multiple environments?
Yes. It supports the authentication schemes declared in your spec, and readers can select from the servers your spec defines, override server variables, and keep that selection across sessions.
Where do the guides around the reference live?
In the same project. Quickstarts, SDK guides, and tutorials are MDX pages alongside the generated reference, sharing one navigation, one search index, and one AI assistant.
Ready to build documentation people and AI agents love?
Live in under 5 min · No credit card required