curl --request POST \
  --url https://commet.co/api/v1/usage/check \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "customerId": "<string>",
  "featureCode": "<string>"
}
'

import { Commet } from "@commet/node";

const commet = new Commet({ apiKey: "ck_xxx" });

const usageCheck = await commet.usage.check({
  customerId: "user_123",
  featureCode: "api_calls",
});

from commet import Commet

commet = Commet("ck_xxx")

usage_check = commet.usage.check(
    customer_id="user_123",
    feature_code="api_calls",
)

client, err := commet.New("ck_xxx")
if err != nil {
	log.Fatal(err)
}
ctx := context.Background()

usageCheck, err := client.Usage.Check(ctx, &commet.CheckUsageAvailabilityParams{
	CustomerID: "user_123",
	FeatureCode: "api_calls",
})
if err != nil {
	log.Fatal(err)
}

import co.commet.Commet;
import co.commet.params.CheckUsageAvailabilityParams;

var commet = Commet.builder().apiKey("ck_xxx").build();

var usageCheck = commet.usage().check(
    CheckUsageAvailabilityParams.builder("user_123", "api_calls").build()
);

use Commet\Commet;

$commet = new Commet('ck_xxx');

$usageCheck = $commet->usage->check(
    customerId: 'user_123',
    featureCode: 'api_calls',
);

{
  "allowed": true,
  "subscriptionStatus": "active",
  "featureCode": "api_calls",
  "quantity": 1,
  "consumptionModel": "metered",
  "current": 250,
  "remaining": 750,
  "unlimited": false,
  "included": 1000,
  "overageEnabled": false,
  "overageUnitPrice": null,
  "object": "usage_check",
  "livemode": false
}

{
  "error": {
    "type": "validation_error",
    "code": "validation_error",
    "message": "The request contains an invalid parameter.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/validation_error.md"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "unauthorized",
    "message": "A valid API key is required.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/unauthorized.md"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "forbidden",
    "message": "You do not have permission to perform this operation.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/forbidden.md"
  }
}

{
  "error": {
    "type": "not_found_error",
    "code": "not_found",
    "message": "The requested resource was not found.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/not_found.md"
  }
}

{
  "error": {
    "type": "conflict_error",
    "code": "idempotency_in_progress",
    "message": "A request with this idempotency key is still being processed.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/idempotency_in_progress.md"
  }
}

{
  "error": {
    "type": "validation_error",
    "code": "validation_error",
    "message": "The requested operation is not valid for the current configuration.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/validation_error.md"
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limited",
    "message": "Too many requests. Retry after the interval specified in the Retry-After header.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/rate_limited.md"
  }
}

{
  "error": {
    "type": "internal_error",
    "code": "internal_error",
    "message": "An unexpected error occurred while processing the request.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/internal_error.md"
  }
}

{
  "error": {
    "type": "internal_error",
    "code": "idempotency_unavailable",
    "message": "Idempotency storage is temporarily unavailable. Retry with the same idempotency key.",
    "doc_url": "https://commet.co/docs/api-reference/2026-08-27/errors/idempotency_unavailable.md"
  }
}