{
"type": "https://getbioflow.com/docs/api/errors/test-key-read-only",
"title": "Test-mode keys are restricted to read operations",
"status": 403,
"instance": "urn:request:req_01abc",
"code": "test_key_read_only",
"request_id": "req_01abc"
}Branch on the stable code field — title and detail are for humans and may change. type always resolves to this page. Quote request_id when contacting support. Full code registry on the API docs hub; the complete surface is in the interactive reference.