Summary

Problem

After upgrading to 2026.2.14+, local files cannot be sent to Feishu.
filePath parameter returns 400 error.

Expected behavior

Ability to send local files (images, documents, zip) to Feishu messages

Current behavior

• filePath returns 400 error
• file_url requires running a local HTTP server (workaround only)
• Images cannot be embedded in feishu_doc
• No official replacement API provided

Problem to solve

Reproduction

1. Ask agent to send ~/Desktop/image.png to Feishu
2. Returns 400 error or broken link

Proposed solution

Suggested fix

Provide a secure file upload API that replaces the removed filePath functionality

Alternatives considered

No response

Impact

Version

OpenClaw 2026.2.25

Evidence/examples

No response

Additional information

No response