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claude-code - 💡(How to fix) Fix [BUG] Figma MCP never transitions from auth mode to operational mode

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Error Message

Error Messages/Logs

Code Example

Additional context:

~/.claude/mcp-needs-auth-cache.json always shows {"figma":{"timestamp":...}} even after successful auth
No Figma-related token found in macOS Keychain (security find-generic-password returns nothing)
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Preflight Checklist

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

What's Wrong?

Description: The built-in Figma MCP server gets stuck in authentication mode and never exposes actual Figma tools, even after successfully completing the OAuth flow.

What Should Happen?

Steps to reproduce:

Open Claude Code — Figma MCP appears with only authenticate and complete_authentication tools Call authenticate → receive OAuth URL Open URL in browser → log in to Figma → browser shows "Authentication Successful" Back in Claude: the auth tools disconnect, but no Figma tools appear — the MCP server simply goes away After a delay, the MCP server reconnects — but only with the auth tools again (step 1 repeats) Expected behavior: After OAuth completes, the Figma MCP should expose its full set of tools (get_file, get_comments, etc.)

Actual behavior: The MCP server disconnects after auth and never transitions to an operational state. The OAuth token does not appear to be persisted anywhere (not in macOS Keychain, not in ~/.claude/, not in ~/Library/Application Support/Claude/). Every restart and every auth attempt results in the same loop.

Error Messages/Logs

Additional context:

~/.claude/mcp-needs-auth-cache.json always shows {"figma":{"timestamp":...}} even after successful auth
No Figma-related token found in macOS Keychain (security find-generic-password returns nothing)

Steps to Reproduce

Steps to reproduce:

Open Claude Code — Figma MCP appears with only two tools: mcp__figma__authenticate and mcp__figma__complete_authentication Call mcp__figma__authenticate → receive an OAuth URL Open that URL in a browser → log in to Figma → browser shows "Authentication Successful / You can close this window. Return to Claude Code." Back in Claude Code: the auth tools disconnect (system reminder: "MCP server disconnected") No Figma tools appear. The MCP server goes silent. After a delay, the MCP server reconnects — but only the two auth tools reappear. Loop repeats from step 1.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

2.1.142

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

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claude-code - 💡(How to fix) Fix [BUG] Figma MCP never transitions from auth mode to operational mode