OpenAPI spec
The complete machine-readable map of the API - every endpoint, request, response, and error.
OpenAPI is the industry-standard format for describing an HTTP API in a file machines can read.
https://api.wontopos.com/openapi.jsonWhat you can do with it
Postman: File → Import → paste the URL, and every endpoint appears as a clickable collection. ChatGPT: create a GPT, add an Action, paste the same URL. Codegen: openapi-generator -i .../openapi.json -g go builds a client in a language we do not ship.
Import it into Postman, generate a client in a language we do not ship, wire up ChatGPT Actions, or run contract checks in CI. A test pins it to the live routes, so it cannot drift.
llms.txt
The whole API as one page of text an AI can read.
llms.txt is a web convention: one plain-text page at the site root that tells an AI everything it needs about a product.
https://wontopos.com/llms.txtDrop it into your IDE or coding agent and it knows how to build on WOS - auth, endpoints, patterns, errors. Updated with every release.
Same facts as the OpenAPI spec, different audience: the spec is precise structure for tools, this file is prose an AI (or a person) reads in one pass. Both update with every release.