# Find a customer's subscription (/api/usage-agreements/get-usage-subscription-context)

`GET https://api.comecero.com/api/v1/usage/subscription_context`

Finds the one active billing agreement that covers your customer id at a time, and the subscription it bills. Use it to check which subscription usage sent now (or at `occurred_at`) will be billed to. Secret and trusted tokens may call it; a limited token may not (`403`).

## Parameters

- `customer_id` (query, required): Your id for the customer, the agreement's `customer_id`.
- `billing_region` (query): The agreement's region. Defaults to us.
- `occurred_at` (query): An ISO 8601 date. Defaults to now.

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

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