# API keys

## Google reCAPTCHA

* <https://developers.google.com/recaptcha/docs/verify>

Verificación de secret key.

```sh
curl -X POST https://www.google.com/recaptcha/api/siteverify -H '"Content-Type", "application/x-www-form-urlencoded; charset=utf-8"' -d "secret=<secret-key>&response=test"
```

* \<secret-key> = secret key de Google reCAPTCHA.

Secret key no válida.

```json
{
  "success": false,
  "error-codes": [
    "invalid-input-secret"
  ]
}
```

Secret key válida.

```json
{
  "success": false,
  "error-codes": [
    "invalid-input-response"
  ]
}
```

Expresión regular.

```regex
6[0-9a-zA-Z_-]{39}
```