---
title: "Update Document Metadata"
method: POST
path: "/documents/{document_id}/update_metadata"
tags: ["Documents"]
---

# Update Document Metadata

`POST /documents/{document_id}/update_metadata`

Update only a document's metadata.

## Path parameters

- `document_id` string, required

## Headers

- `authorization` string, nullable

## Request body

- MetadataUpdateRequest — Request payload for metadata-only document updates.
  - `metadata` object — Metadata fields to merge into the document.
  - `metadata_types` object, nullable — Optional per-field type hints: 'string', 'number', 'decimal', 'datetime', 'date', 'boolean', 'array', 'object'. Enables typed comparisons.

## Response `200`

Successful Response

- Document — Represents a document stored in the database documents collection
  - `external_id` string
  - `content_type` string, required
  - `filename` string, nullable
  - `metadata` object
  - `metadata_types` object
  - `storage_info` object
  - `system_metadata` object
  - `additional_metadata` object
  - `chunk_ids` string[]
  - `summary_storage_key` string, nullable
  - `summary_version` integer, nullable
  - `summary_bucket` string, nullable
  - `summary_updated_at` string, nullable
  - `folder_name` string, nullable
  - `end_user_id` string, nullable
  - `app_id` string, nullable
  - `folder_path` string, nullable
  - `folder_id` string, nullable

## Other responses

- `422` — Validation Error

## Changes

- **2026-01-22** `2d9291c3821d` — 2 info
  - `header` request parameter `authorization` list-of-types was widened by adding types `null`
  - for the `header` request parameter `authorization`, the type/format was generalized from `string`/`` to ``/``
- **2025-12-18** `4b79c3821a17` — 1 warning, 5 info
  - removed the optional property `storage_files` from the response with the `200` status
  - added the optional property `folder_id` to the response with the `200` status
  - added the optional property `summary_bucket` to the response with the `200` status
  - added the optional property `summary_storage_key` to the response with the `200` status
  - …2 more
- **2025-12-06** `e185c542e939` — 1 info
  - added the optional property `folder_path` to the response with the `200` status
- **2025-11-13** `b9ae748cb938` — 3 info
  - added the new optional request property `metadata`
  - added the new optional request property `metadata_types`
  - added the optional property `metadata_types` to the response with the `200` status

[Change history](https://skmtc.dev/morphik-org/apis/fastapi/changes/documents/:document_id/update_metadata/post.md)

---

[API](https://skmtc.dev/morphik-org/apis/fastapi.md) · [All operations](https://skmtc.dev/morphik-org/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/morphik-org/fastapi/revisions/2d9291c3821d/schema)