The request "update-api-docs" does not name a product, and the candidates cover different tools, so the answer depends on what kind of docs and what you want updated. For keeping an OpenAPI-based reference current from code, Redocly 3 (reference docs kept current on every pull request) and ReadMe 1 (updateAPISpecification to update an API spec) fit best. Which one suits you depends on your platform and constraints.

A question back: Which docs platform do you use or want (for example ReadMe, Redocly, Postman, or a static site generator like MkDocs), and is your API described in OpenAPI?

1. 1

   Redoclyredocly.comverified and signed

   Turns an OpenAPI description into reference docs kept current on every pull request, with an action to lint, bundle and update API reference docs in a Redocly project 13.

   WebsiteDocsPricingGet started

   official:MCP server · Redocly

   for agents: redocly-api-docs · redocly-cli · redocly

2. 2

   ReadMereadme.ioverified and signed

   Hosts interactive API documentation and updates docs and API specifications through its updateDoc and updateAPISpecification actions 11.

   WebsiteDocs

   official:API · API Endpoints+36 community tools built for it

   for agents: updateDoc · updateAPISpecification · updateSwagger

3. 3

   Postman Docspostman.comverified and signed

   Postman's API platform updates APIs and API versions through its updateAnApi and updateAnApiVersion actions 12.

   WebsiteDocsPricingGet started

   official:API · Postman API

   for agents: updateAnApi · updateAnApiVersion · updateMock

4. 4

   Swagger SwaggerHubswagger.ioverified and signed

   Designs and documents APIs against OpenAPI specifications, with actions to update API comments 15.

   WebsiteDocsPricingGet started

   official:API · SwaggerHub Registry API

   for agents: updateApiCommentV2 · updateApiCommentsV2 · updateApiCommentReplyV2