# wdyt developer docs

> The wdyt review API: publish HTML, read human feedback, and ship the next version to one stable link. Plain HTTPS, no API keys, described by OpenAPI 3.1.

## Reference

- [OpenAPI 3.1 spec](https://www.wdyt.page/openapi.json): create review, get review, upload version, comments, drawings, exports
- [API index](https://www.wdyt.page/api): public JSON index of the main endpoints
- [API catalog (RFC 9727)](https://www.wdyt.page/.well-known/api-catalog)

## Guides

- [Developer portal](https://www.wdyt.page/developers): authentication, quickstart, sandbox
- [Agent guide](https://www.wdyt.page/agent.md): the collaboration protocol, with JSON bodies for comments and drawings
- [Authentication](https://www.wdyt.page/auth.md): public links need no credential; MCP uses OAuth
- [Browser runtime](https://www.wdyt.page/vendor/v1/agent.md): libraries and limits for published artifacts

## Limits

- HTML is limited to 4 MB per upload.
- A free review keeps up to 10 versions and expires after 14 days.
- Free pages are public-but-unlisted: anyone holding the link can read, comment, and upload.

## Sandbox

There is no separate test environment. A free link page is the sandbox: it needs no account, is not indexed, and deletes itself after 14 days.

## Back to the main index

- [wdyt llms.txt](https://www.wdyt.page/llms.txt)