github-see-mcp-server

The server uses environment variables for sensitive data like GITHUB_TOKEN and API_KEY, which is good practice. Input sanitization is implemented using DOMPurify for potentially user-generated content, mitigating some injection risks. However, CORS is configured with `origin: "*"` by default (`app.use(cors({ origin: "*" }))`), which poses a significant security risk by allowing any domain to interact with the server. For production, `CORS_ALLOW_ORIGIN` should be explicitly set to restrict access. Additionally, the GitHub Personal Access Token is expected to be passed from the client (`mcp-remote`) in a `GITHUB_TOKEN` header, meaning the server acts as a proxy for the client's token. This design shifts the responsibility of token security and scope management to the client and upstream agent, rather than the MCP server enforcing granular access with a server-side token. While common in some proxy patterns, it implies a higher trust in the client, and `API_KEY`'s role in client authentication is not clearly demonstrated in the provided code snippet.