Retrieve the daily usage of an API key

Retrieve the daily usage of an API key over the last days days (7, 30 or 90; default 30). - daily lists requests, successes, 4xx, 429 and 5xx per day, oldest first; total sums them. - last_used_at/last_used_ip are null if never used.

Requires account:read. - Unknown key returns 404 api_key_not_found; other days returns 422.

Authorization

AuthorizationBearer <token>

Your API key as a bearer token: fact_live_… in production, fact_test_… in sandbox. See the authentication guide.

In: header

Path Parameters

account*string

Public identifier (UUID v7) of your account. Get it from GET /v1/me (data.account.id).

Formatuuid

api_key*string

Public identifier (UUID v7) of the API key.

Formatuuid

Query Parameters

days?integer

Number of days of the series, ending today: 7, 30 or 90 (default 30).

Value in7 | 30 | 90

Headers

Factuarea-Version?string

Pin the API version (YYYY-MM-DD, Stripe-style date versioning) for this request; omit to use the key's pinned version, or the latest if none. Unsupported version → 400 unsupported_api_version; malformed → 400 parameter_invalid_format. The effective version is echoed in the Factuarea-Version response header. See the Versioning guide.

Formatdate

Response Body

`application/json`

Request example

const apiKey = process.env.FACTUAREA_API_KEY;if (!apiKey) throw new Error("Set FACTUAREA_API_KEY");const response = await fetch("https://api.factuarea.com/v1/accounts/01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01/api-keys/01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01/usage", {  method: "GET",  headers: { Authorization: `Bearer ${apiKey}`, ...{"Accept":"application/json"} },});if (!response.ok) throw new Error(await response.text());if (response.status !== 204) console.log(await response.json());

Response example

{
  "data": {
    "daily": [
      {
        "date": "2026-10-05",
        "requests_count": 180,
        "successful_count": 170,
        "client_error_count": 8,
        "rate_limited_count": 2,
        "error_count": 0
      },
      {
        "date": "2026-10-06",
        "requests_count": 214,
        "successful_count": 201,
        "client_error_count": 9,
        "rate_limited_count": 3,
        "error_count": 1
      },
      {
        "date": "2026-10-07",
        "requests_count": 0,
        "successful_count": 0,
        "client_error_count": 0,
        "rate_limited_count": 0,
        "error_count": 0
      },
      {
        "date": "2026-10-08",
        "requests_count": 0,
        "successful_count": 0,
        "client_error_count": 0,
        "rate_limited_count": 0,
        "error_count": 0
      },
      {
        "date": "2026-10-09",
        "requests_count": 226,
        "successful_count": 214,
        "client_error_count": 10,
        "rate_limited_count": 2,
        "error_count": 0
      },
      {
        "date": "2026-10-10",
        "requests_count": 240,
        "successful_count": 228,
        "client_error_count": 9,
        "rate_limited_count": 2,
        "error_count": 1
      },
      {
        "date": "2026-10-11",
        "requests_count": 220,
        "successful_count": 191,
        "client_error_count": 25,
        "rate_limited_count": 0,
        "error_count": 4
      }
    ],
    "total": {
      "requests_count": 1080,
      "successful_count": 1004,
      "client_error_count": 61,
      "rate_limited_count": 9,
      "error_count": 6
    },
    "last_used_at": "2026-10-11T07:58:12Z",
    "last_used_ip": "203.0.113.10"
  }
}

Retired X-Active-Profile header sent

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_unknown",
    "subcode": "retired_active_profile_header",
    "message": "La cabecera 'X-Active-Profile' fue retirada de la API v1: la empresa efectiva se indica en el segmento de empresa de la ruta.",
    "param": "X-Active-Profile",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_unknown",
    "request_id": "req_01J8Y3M2Q40000000000000001"
  }
}

Malformed Factuarea-Version header

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid_format",
    "message": "El header 'Factuarea-Version' debe tener formato YYYY-MM-DD.",
    "param": "Factuarea-Version",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid_format",
    "request_id": "req_01J8Y3M2Q40000000000000002"
  }
}

Unsupported Factuarea-Version

{
  "error": {
    "type": "invalid_request_error",
    "code": "unsupported_api_version",
    "message": "La versión de API '2020-01-01' no está soportada.",
    "param": "Factuarea-Version",
    "doc_url": "https://docs.factuarea.com/guides/errors#unsupported_api_version",
    "request_id": "req_01J8Y3M2Q40000000000000003"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "missing_api_key",
    "message": "Falta header Authorization o X-API-Key.",
    "doc_url": "https://docs.factuarea.com/guides/errors#missing_api_key",
    "request_id": "req_3b7d0e9a5c1f4826d7a0b9e314"
  }
}

{
  "error": {
    "type": "authorization_error",
    "code": "insufficient_scope",
    "message": "Esta operación requiere el scope 'account:read'. Tu API key solo tiene los scopes: ninguno.",
    "doc_url": "https://docs.factuarea.com/guides/errors#insufficient_scope",
    "request_id": "req_8e24a6c0d93b57f1a2c4e6b801"
  }
}

GET /v1/accounts/{account}/api-keys/{api_key}/usage · 404 resource_not_found

{
  "error": {
    "type": "not_found_error",
    "code": "resource_not_found",
    "message": "El recurso solicitado no existe.",
    "doc_url": "https://docs.factuarea.com/guides/errors#resource_not_found",
    "request_id": "req_5d1f9a73c8e2046b1d7a3f9c52"
  }
}

Account not found or not the account of the API key

{
  "error": {
    "type": "not_found_error",
    "code": "account_not_found",
    "message": "La cuenta indicada no existe o no es la de tu credencial.",
    "param": "account",
    "doc_url": "https://docs.factuarea.com/guides/errors#account_not_found",
    "request_id": "req_01J8Y3M2Q40000000000000006"
  }
}

Parameter failed validation

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid",
    "message": "El campo `name` es obligatorio y no puede estar vacío.",
    "param": "name",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid",
    "request_id": "req_01HKQS5NGS8Z3T6Q1D2E7FYVSI"
  }
}

Plan limit reached (authorization)

{
  "error": {
    "type": "authorization_error",
    "code": "max_api_keys_exceeded",
    "message": "Has alcanzado el número máximo de API keys permitido por tu plan. Revoca alguna existente o actualiza tu suscripción.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#max_api_keys_exceeded",
    "request_id": "req_01HKQS5NGS8Z3T6Q1D2E7FYVSJ"
  }
}

Invoice language outside the allowed catalog

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid",
    "message": "El idioma no es válido. Valores permitidos: es, en, ca.",
    "param": "language",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid",
    "request_id": "req_01HKQS5NACCTPERSLANGINVAL1"
  }
}

Grants on a member that is not a `member`

{
  "error": {
    "type": "invalid_request_error",
    "code": "grants_only_for_member",
    "message": "Solo un miembro con rol member puede tener permisos por NIF: el titular y los administradores alcanzan todos los NIF de la cuenta.",
    "param": "level",
    "doc_url": "https://docs.factuarea.com/guides/errors#grants_only_for_member",
    "request_id": "req_01HKQS5NACCTGRANTSONLYMEM1"
  }
}

Grant on a tax ID outside the account or the credential scope

{
  "error": {
    "type": "invalid_request_error",
    "code": "grant_company_not_in_account",
    "message": "Ese NIF no pertenece a esta cuenta o queda fuera del ámbito de la credencial.",
    "param": "company",
    "doc_url": "https://docs.factuarea.com/guides/errors#grant_company_not_in_account",
    "request_id": "req_01HKQS5NACCTGRANTNIFOUTAC2"
  }
}

The account already has an external advisor

{
  "error": {
    "type": "invalid_request_error",
    "code": "external_advisor_already_assigned",
    "message": "Esta cuenta ya tiene un asesor externo: retíralo o quítale la marca antes de asignar otro.",
    "param": "external_advisor",
    "doc_url": "https://docs.factuarea.com/guides/errors#external_advisor_already_assigned",
    "request_id": "req_01HKQS5NACCTADVISORTAKEN03"
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limit_exceeded",
    "message": "Has excedido el límite de requests permitido. Reintenta más tarde.",
    "doc_url": "https://docs.factuarea.com/guides/errors#rate_limit_exceeded",
    "request_id": "req_c07a4e18b52d9f6310e8a7d4b6"
  }
}

{
  "error": {
    "type": "api_error",
    "code": "internal_error",
    "message": "Algo se rompió en nuestro lado al procesar la petición. La condición no la provoca tu payload.",
    "doc_url": "https://docs.factuarea.com/guides/errors#internal_error",
    "request_id": "req_28d4491746b95a7eaca525e39f"
  }
}

Retrieve the daily usage of an API key

Authorization

Path Parameters

Query Parameters

Headers

Response Body

200application/json

400application/json

401application/json

403application/json

404application/json

422application/json

429application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`