# Add Documents To Collection

POST https://api.credal.ai/api/v0/documentCollections/addDocumentsToCollection
Content-Type: application/json

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.

Reference: https://docs.credal.ai/api-reference/api-reference/document-collections/add-documents-to-collection

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

**Body (application/json)**

This endpoint expects an object.

- `collectionId` (UUID, required) — The ID of the document collection you want to add to.
- `resourceIdentifiers` (list of ResourceIdentifier, required) — The set of resource identifier for which you want to add to the collection.

**Types**

**ResourceIdentifier**

- `type`: `external-resource-id`
  - `externalResourceId` (string, required)
  - `resourceType` (enum, required)
    - Allowed values: `GOOGLE_DRIVE_ITEM`, `MICROSOFT_DRIVE_ITEM`, `ZENDESK_TICKET`, `ZENDESK_ARTICLE`, `ZENDESK_GROUP`, `ZENDESK_ARTICLE_SECTION`, `ZENDESK_ARTICLE_CATEGORY`, `CONFLUENCE_PAGE`, `CONFLUENCE_SPACE`, `JIRA_TICKET`, `JIRA_PROJECT`, `SALESFORCE_TASK`, `BOX_FILE`, `BOX_FOLDER`, `NOTION_PAGE`, `NOTION_DATABASE`, `SLACK_CHANNEL`, `MONGO_COLLECTION_SYNC`, `UNKNOWN`
- `type`: `url`
  - `url` (string, required)

**Examples**

**Request**

```json
{
  "collectionId": "82e4b12a-6990-45d4-8ebd-85c00e030c24",
  "resourceIdentifiers": [
    {
      "type": "external-resource-id",
      "externalResourceId": "170NrBm0Do7gdzvr54UvyslPVWkQFOA0lgNycFmdZJQr",
      "resourceType": "GOOGLE_DRIVE_ITEM"
    },
    {
      "type": "external-resource-id",
      "externalResourceId": "398KAHdfkjsdf09r54UvyslPVWkQFOA0lOiu34in923",
      "resourceType": "GOOGLE_DRIVE_ITEM"
    }
  ]
}
```

## Related pages

- [Search Document Collection](./api-reference-2-api-reference-search-search-document-collection.md)
- [Remove Documents From Collection](./api-reference-2-api-reference-document-collections-remove-documents-from-collection.md)
- [List Documents In Collection](./api-reference-2-api-reference-document-collections-list-documents-in-collection.md)
- [Create Collection](./api-reference-2-api-reference-document-collections-create-collection.md)
- [Delete Collection](./api-reference-2-api-reference-document-collections-delete-collection.md)
- [Create Mongo Collection Sync](./api-reference-2-api-reference-document-collections-create-mongo-collection-sync.md)
- [Update Mongo Collection Sync](./api-reference-2-api-reference-document-collections-update-mongo-collection-sync.md)

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