[Bug] MCP Server Configuration: Windows requires 'cmd /c' wrapper for npx execution

Bug Description
For help configuring MCP servers, see: https://code.claude.com/docs/en/mcp [Contains warnings] User config (available in all your projects) Location: C:\Users\enzo_\.claude.json └ [Warning] [railway-mcp-server] mcpServers.railway-mcp-server: Windows requires 'cmd /c' wrapper to execute npx

Environment Info

• Platform: win32
• Terminal: vscode
• Version: 2.1.116
• Feedback ID: 893aea61-55ef-4813-bb0f-6eb38a662390

Errors

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at jPH (B:/~BUN/root/src/entrypoints/cli.js:2808:30294)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-21T22:01:51.814Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at jPH (B:/~BUN/root/src/entrypoints/cli.js:2808:30294)\n    at async G (B:/~BUN/root/src/entrypoints/cli.js:6198:11019)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-21T22:01:52.748Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at jPH (B:/~BUN/root/src/entrypoints/cli.js:2808:30294)\n    at async v (B:/~BUN/root/src/entrypoints/cli.js:6198:11826)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-21T22:01:52.748Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at jPH (B:/~BUN/root/src/entrypoints/cli.js:2808:30294)\n    at async G (B:/~BUN/root/src/entrypoints/cli.js:6198:11019)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-21T22:01:52.890Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at jPH (B:/~BUN/root/src/entrypoints/cli.js:2808:30294)\n    at async v (B:/~BUN/root/src/entrypoints/cli.js:6198:11826)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-21T22:01:52.892Z"}]