# Local file uploads, clearer errors, and improved client compatibility

**Version:** v2.37.0

**Published:** September 30, 2026

## New Features

- `dataset_assets_upload_from_file` tool: Prepare one-use URLs for uploading local image and file assets.

## Improvements

- File uploads: Clearer errors for rejected files or upload options and missing destinations, with guidance for preparing a new upload URL.
- Tool input validation: Errors for unexpected keys now name the keys and list the keys the object accepts across tools with strict inputs. Examples include a stray `schemaId` on `create_documents`, or `ifRevisionID` instead of `ifRevisionId` on `patch_documents` or `publish_documents`, so calls can be corrected instead of guessed at.

## Fixes

- MCP client compatibility: Workflow fields and patch insertion schemas now work with clients that require explicit value types.
- `dataset_assets_upload_from_url` and `media_assets_upload_from_url` tools: Fixed the `filename` input breaking clients with strict regex validation, such as OpenAI, which rejected the whole tool list.