> For the complete documentation index, see [llms.txt](https://dev.guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.guardian.hedera.com/developer-tools-and-resources/api-reference/system-schema-apis/returns-map-api-key.md).

# Returns Map API Key

**`GET /map/sh`**

Returns the Sentinel API key from Guardian service environment settings.

**Authentication:** Bearer token required (`Authorization: Bearer <token>`)

***

## Request

No request parameters.

***

## Response

### Success Response

**Status:** `200 OK`

Returns the Sentinel API key as a string.

```json
"46e0a5e4-6a27-46a6-adcc-a4608a4513e4"
```

### Error Responses

| Status                      | Description               |
| --------------------------- | ------------------------- |
| `401 Unauthorized`          | Missing or invalid token  |
| `500 Internal Server Error` | Unexpected server failure |