Missing API Key Configuration for Claude MCP Serve with Desktop

Bug Description
I'm experiencing an issue with the claude mcp serve command in Claude Desktop (Max plan) where it consistently fails with a missing API key error whenever the task tool is invoked.

Setup details:

• Using claude CLI with local migration
• Binary location: ~/.claude/local/claude
• Attempted to set CLAUDE_CONFIG_DIR environment variable with absolute path

Current MCP configuration:

"claude-code": {
  "command": "/Users/myuser/.claude/local/claude",
  "args": ["mcp", "serve"],
  "env": {
    "CLAUDE_CONFIG_DIR": "/Users/myuser/.claude"
  }
}

What I've tried:

1. Running with the above configuration including CLAUDE_CONFIG_DIR
2. Running without the environment variable
3. Using absolute paths throughout

Both approaches result in the same missing API key error when invoking the task tool. I haven't been able to successfully configure and use this MCP server.

Any guidance on proper configuration or troubleshooting steps would be appreciated.
Environment Info

• Platform: macos
• Terminal: cursor
• Version: 1.0.11
• Feedback ID: 94a65432-c79d-45bd-b4c0-75a00c5f2206

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at JZ (file:///Users/namik/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:683:2402)\n    at file:///Users/namik/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:582:11763\n    at Q (file:///Users/namik/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:526:17069)\n    at LU (file:///Users/namik/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:582:10909)\n    at HG (file:///Users/namik/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:582:10355)\n    at lO2 (file:///Users/namik/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2042:4758)","timestamp":"2025-06-05T13:10:06.458Z"}]