> ## Documentation Index
> Fetch the complete documentation index at: https://docs.receiptor.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Capabilities Overview

> Discover and execute Receiptor capabilities through the external API.

## Endpoints

Base host: `https://developer.api.receiptor.ai`

* `GET /v1/capabilities` (public)
* `POST /v1/capabilities/:slug` (API key required)

Use capability `slug` values, for example `documents.search`.

## Authentication

Execution endpoints accept API key in:

* `Authorization: Bearer sk_...`
* `X-Receiptor-API-Key: sk_...`
* `apiKey` query/body fallback

Most capabilities require workspace context. Provide:

* `X-Receiptor-Org-Id: org_...`

`workspaces.list` is intentionally unscoped so you can discover available orgs first.

## Keep capability docs current

Do not hardcode capability lists.

Always validate against live discovery:

```bash theme={null}
curl -s https://developer.api.receiptor.ai/v1/capabilities
```

Use the API Reference tab (OpenAPI) for endpoint-level schema docs.

See also:

* [Live Capabilities Catalog](/api/capabilities/live-catalog)

## Response envelope

```json theme={null}
{
  "success": true,
  "code": 200,
  "data": {
    "result": {}
  }
}
```

Error shape:

```json theme={null}
{
  "success": false,
  "code": 400,
  "error": {
    "errorCode": 400,
    "errorMessage": "..."
  }
}
```