claude-code - 💡(How to fix) Fix [Bug] MCP Server Configuration: Windows requires 'cmd /c' wrapper for npx execution [1 comments, 2 participants]

[{"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"}]

TL;DR

Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the MCP server configuration error.

Guidance

• The error messages indicate a missing GITHUB_PERSONAL_ACCESS_TOKEN environment variable, which is required for the MCP server to function correctly.
• To fix this, you need to set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable in your system or project settings.
• You can do this by creating a new environment variable in your operating system or by adding it to your project's configuration file.
• Verify that the environment variable is set correctly by checking your system's environment variables or your project's configuration file.

Example

No code snippet is provided as it is not necessary for this specific issue.

Notes

The GITHUB_PERSONAL_ACCESS_TOKEN environment variable is required for the MCP server to authenticate with GitHub. Make sure to replace the token with a valid personal access token from your GitHub account.

Recommendation

Apply workaround: Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the issue. This is a necessary step to configure the MCP server correctly.