# missing_api_key (/en/docs/errores/missing_api_key)

No API key was presented.

|                |                                                                   |
| -------------- | ----------------------------------------------------------------- |
| **Code**       | `missing_api_key`                                                 |
| **Type**       | `authentication_error` — Credential missing, revoked or malformed |
| **HTTP**       | `401`                                                             |
| **Retriable?** | No                                                                |

## What to do [#what-to-do]

Send `Authorization: Bearer sk_live_…` or `sk_test_…`. No key yet? `POST https://api.facturia.cl/account/register` with `bootstrap.sandbox_key` returns one in the same response — no browser, no human. That endpoint and everything else you need before you hold a key are in the bootstrap contract: [https://docs.facturia.cl/openapi-bootstrap.yaml](https://docs.facturia.cl/openapi-bootstrap.yaml)

> **Warning**
>
> Retrying the same request will fail the same way. Change the request, not the frequency.

## The envelope [#the-envelope]

```json
{
  "error": {
    "type": "authentication_error",
    "code": "missing_api_key",
    "message": "…",
    "hint": "Send `Authorization: Bearer sk_live_…` or `sk_test_…`. No key yet? `POST https://api.facturia.cl/account/register` with `bootstrap.sandbox_key` returns one in the same response — no browser, no human. That endpoint and everything else you need before you hold a key are in the bootstrap contract: https://docs.facturia.cl/openapi-bootstrap.yaml",
    "retriable": false,
    "doc_url": "https://docs.facturia.cl/errors/missing_api_key",
    "request_id": "req_01K2R7Q9M4T2VB"
  }
}
```

Program against `code`, never against `message` — the prose can be rewritten, the code cannot (§5.8).

`hint` and `retriable` arrive in the response with these exact values: they are a function of `code` and come from the same dictionary `GET /v1/error_codes` serves, so the envelope and the dictionary cannot disagree. Both are English on the wire by design — one registry, one language. More in [The error envelope](/en/docs/errores).

## See also [#see-also]

- [Every code](/en/docs/errores/codigos): The full table, grouped by where you will run into it.

- [The error envelope](/en/docs/errores): The nine types, the request_id and how to handle them in practice.

The machine-readable copy of this page lives at `GET /v1/error_codes`, unauthenticated.