Clasp-Version: version_string request header, which should be included in every request to the Clasp API.
Partners can choose a pinned version, which Clasp will use if requests from that partner do not contain the version header. New partners default to the latest version of the API. If a newer API version than a partner’s pinned version is released, and that partner sends a request without the header, the request will be served with a response corresponding to the pinned version of the API. However, if a request contains a version header, that version will take precedence.
Current API Versions:
2026-04-242023-08-25