# Add Documents To Collection

**POST** `/v0/documentCollections/addDocumentsToCollection`

Add documents to a document collection. Note that the documents must already exist in the document catalog to use this endpoint. If you want to upload a new document to a collection, use the `uploadDocumentContents` endpoint.

Base URL: `https://api.credal.ai/api`

Tags: `documentCollections`

## Authorization

| Option | Scheme | Type | Sent as | Scopes |
| --- | --- | --- | --- | --- |
| Option 1 | `BearerAuthScheme` | `http` | `Authorization: Bearer <token>` | — |

## Request body

Optional. Media type: `application/json`

### Example request body

```json
{
  "collectionId": "00000000-0000-0000-0000-000000000000",
  "resourceIdentifiers": [
    {
      "externalResourceId": "string",
      "resourceType": "BOX_FILE",
      "type": "external-resource-id"
    }
  ]
}
```

## Responses

| Status | Description | Media type |
| --- | --- | --- |
| `200` | Successful response | — |

## Related pages

- [Add Collection To Copilot](./copilots_addcollectiontocopilot.md)
- [API Reference](../../api.md)
- [copilots](./tags/copilots.md)
- [Create Collection](./documentcollections_createcollection.md)
- [Create Conversation](./copilots_createconversation.md)
- [Create Copilot](./copilots_createcopilot.md)
- [Create Mongo Collection Sync](./documentcollections_createmongocollectionsync.md)
- [Delete Collection](./documentcollections_deletecollection.md)
- [Delete Copilot](./copilots_deletecopilot.md)
- [documentCatalog](./tags/documentcatalog.md)

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