GET /v1/notice returns a JSON document describing the production API baseline: hosts, site routes, every /v1 route, pagination rules, list headers, flag CDN paths, data sources, and error conventions. It is scoped to what is deployed in production, not unreleased local routes.
Top-level fields
When to use notice vs OpenAPI vs llms.txt
Always free/v1/notice is not gated by optional x402 payment middleware on other /v1 routes.