[BUG] Gmail MCP: search_messages ignores query parameter, always returns most recent emails

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Bug Description

The gmail_search_messages tool ignores the query parameter entirely.
Regardless of the search query provided, it always returns the same set
of most recent emails (sorted by date descending), as if no filter was applied.

What Should Happen?

Expected Behavior

Results should be filtered by the Gmail search query, matching Gmail's
native search operators (keywords, date ranges, subject filters, etc.).

Error Messages/Logs

## Actual Behavior
All search queries return the same list of recent emails. 
`resultSizeEstimate` is always 201, and `nextPageToken` is always 
the same value, confirming the query is not being passed to the Gmail API.

Steps to Reproduce

Steps to Reproduce

1. Connect Gmail MCP via gmail.mcp.claude.com
2. Call gmail_search_messages with any keyword query, e.g.:

• "sailing Greece"
• "subject:sailing"
• "after:2026/01/31 before:2026/03/01"
• "Segeln Griechenland"

1. Observe that all queries return identical results — the ~20 most recent

inbox messages — regardless of the search terms.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Environment - Claude Code (claude-sonnet-4-6) - Gmail MCP: gmail.mcp.claude.com - Date: 2026-04-03

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_