> ## Documentation Index
> Fetch the complete documentation index at: https://docs.withclasp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Versioning

Clasp maintains API versions when releasing backwards incompatible changes. Versioning is facilitated by the use of a `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:

* `2026-04-24`
* `2023-08-25`