Reference
Usage & metering
Record allowance and credits.
Every plan has an account-level monthly record allowance shared by all capabilities, keys, SDKs and MCP. Records are reserved atomically before work runs. Responses include a usage block; Enterprise reports credits_remaining: null.
GET /api/v1/usage returns a read-only usage snapshot.
curl https://messyapi.com/api/v1/usage \
-H "Authorization: Bearer $MESSYAPI_KEY"