v1
latestOpenAPI 3.1.02026-07-267154122.0 KBCreate a project (child org)
Creates a project under the API key's parent org. monthlyCredits is the optional per-project budget cap in credits — null or omitted means uncapped. A child org's key cannot create projects (nesting is one level deep) → 400 PARENT_REQUIRED.
Headers
Transport-level replay protection — any v2 POST may send it (1–255 printable ASCII characters; UUIDs recommended). The first response for a key is recorded and replayed verbatim for retries with the same key + method/path/body for 24 hours; replayed responses carry the Idempotency-Replay: true response header. Reusing a key with a different request — or retrying while the original is still in flight — returns 409 IDEMPOTENCY_ERROR. 5xx responses are never recorded (the retry re-executes).
Request body
Response
The created project.