PATCH /v3/documents/{id} returns 200 but metadata is not updated

[viktorbonino]

Description

When calling PATCH /v3/documents/{id} to update document metadata, the API returns a 200 status code but the metadata is not actually persisted. Subsequent GET /v3/documents/{id} calls show the metadata unchanged.

Steps to Reproduce

1. Create a document via POST /v3/documents
2. Wait for document status to be done
3. Call PATCH /v3/documents/{id} with metadata:

   {
     "metadata": {
       "tag_1": "example",
       "tag_2": "test",
       "version": 2
     }
   }

Response returns 200 OK with { "id": "...", "status": "done" }
Call GET /v3/documents/{id} to retrieve the document
Metadata field is empty/unchanged
Expected Behavior
Metadata should be persisted and visible when fetching the document.
Actual Behavior
API returns 200 success but metadata is not saved.
Environment
Endpoint: https://api.supermemory.ai/v3/documents/{id}
Method: PATCH
Content-Type: application/json
Auth: Bearer token
Additional Context
Also tried using the official SDK supermemory.documents.update() with the same result.

[linear]

ENG-412