# Add prepaid credit (/api/usage-entitlements/add-entitlement-credit)

`POST https://api.comecero.com/api/v1/usage/entitlements/{entitlement_id}/credits`

Adds credit to a `credit` entitlement. The same `idempotency_key` adds it once; with another amount it answers `409`. Secret and trusted tokens may call it; a limited token may not (`403`).

## Parameters

- `entitlement_id` (path, required): A credit entitlement id.

Request body: the `usage_credit_request` schema.

Responses: 200, 400, 401, 403, 404, 409, 500.

Full schemas: operation `add_entitlement_credit` in /openapi.json.