# Create a usage key (/api/usage-keys/create-usage-key)

`POST https://api.comecero.com/api/v1/usage/keys`

Makes a key for sending events to the usage meter (`POST https://usage.comecero.com/v1/events`). A live token makes `apk_live_` keys, a test token `apk_test_` keys. The key is shown only in this answer. See [Send Usage](https://docs.comecero.com/docs/usage-billing/send-usage). Secret and trusted tokens may call it; a limited token may not (`403`).

Request body: the `usage_key_request` schema.

Responses: 201, 400, 401, 403, 500.

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