MCP Tools Vanish After Session Termination

Bug Description
after I add mcp tools and end the session, they disappear. none of the instructions help

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 1.0.43
• Feedback ID: 75bcd0f0-6188-47a5-b36c-87bdb49695f7

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:984:15)\n    at wrappedFn (node:internal/errors:538:14)\n    at checkExecSyncError (node:child_process:890:11)\n    at execSync (node:child_process:962:15)\n    at ED (file:///Users/ivanbunin/.nvm/versions/node/v20.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:702:3921)\n    at file:///Users/ivanbunin/.nvm/versions/node/v20.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:9038\n    at Q (file:///Users/ivanbunin/.nvm/versions/node/v20.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:13327)\n    at hJ (file:///Users/ivanbunin/.nvm/versions/node/v20.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:8184)\n    at S_ (file:///Users/ivanbunin/.nvm/versions/node/v20.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:7265)\n    at NB (file:///Users/ivanbunin/.nvm/versions/node/v20.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:11432)","timestamp":"2025-07-06T15:42:58.671Z"}]