Claude Code MCP Execution Failure Despite Reported Success

Bug Description
MCP is not working anymore, model reports on sucessful excetion but it's not working

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 1.0.65
• Feedback ID: 341690e7-7349-46ce-b69e-dd4fac59e100

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 t7 (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:867:5184)\n    at file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:776:48379\n    at Q (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:674:14418)\n    at cJ (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:776:45817)\n    at jz (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:776:44684)\n    at W9 (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:776:51005)","timestamp":"2025-08-01T05:24:29.234Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at VX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:1184)\n    at file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:912\n    at Array.map (<anonymous>)\n    at KX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:903)\n    at avB (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2626:7823)\n    at XR (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at Nb (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42848)\n    at $b (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38369)\n    at eS (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38297)\n    at jR (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38151)","timestamp":"2025-08-01T10:34:21.662Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at VX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:1184)\n    at file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:912\n    at Array.map (<anonymous>)\n    at KX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:903)\n    at avB (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2626:7823)\n    at XR (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at Nb (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42848)\n    at $b (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38369)\n    at eS (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38297)\n    at jR (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38151)","timestamp":"2025-08-01T10:34:21.672Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at VX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:1184)\n    at file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:912\n    at Array.map (<anonymous>)\n    at KX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:903)\n    at avB (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2626:7823)\n    at XR (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at Nb (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42848)\n    at $b (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38369)\n    at eS (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38297)\n    at jR (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38151)","timestamp":"2025-08-01T10:34:21.673Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at VX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:1184)\n    at file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1576:912\n    at Array.map (<anonymous>)\n    at KX (file:///Users/slava/.claude/local/node_modules/@anthropic-ai/claude-code/

Note: Error logs were truncated.