API registry / Timely
Timely
Docs at developer.timely.com (Scalar reference) embed an OpenAPI 3.1 document inside the page for logged-in viewers; no standalone spec URL found (checked /openapi.json, /openapi.yaml, /llms.txt, page source, web search).
Apideck doesn't connect Timely yet, so its tools aren't available to your agent here. It's listed for its spec.
Timely publishes no machine-readable API spec.