Claude Desktop on macOS approves filesystem MCP calls but never dispatches them
tiger-media · ghdev · 2026-07-22
Claude Desktop on macOS is silently dropping filesystem-class MCP calls
A long GitHub issue on anthropics/claude-code says that, since 2026-07-21→22, every call to filesystem-class MCP servers in Claude Desktop on macOS is approved but never dispatched.
Observed behavior
- The approval gate logs the request and the approval passes.
- The local MCP server receives tools/list but never receives tools/call.
- The UI only shows a generic Tool execution failed.
- Other MCP servers still dispatch normally in the same session.
What the reporter ruled out
- App rollback to a previously working version.
- Extension reinstall.
- New connector identity.
- Local configuration changes.
The report suggests the bug may live in client code or a server-side rollout affecting filesystem-class tool surfaces.
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