GitHub MCP Server

import { ResourceTemplate, type McpServer, } from "@modelcontextprotocol/sdk/server/mcp.js" import type { Octokit } from "octokit" export function registerRepositoryResource( server: McpServer, octokit: Octokit, ) { server.resource( "github_repo_content", new ResourceTemplate("repo://{owner}/{repo}/contents/{...path}", { list: undefined, }), async (uri, params) => { const { owner, repo, path = "", } = params as { owner: string; repo: string; path?: string } try { const response = await octokit.rest.repos.getContent({ owner, repo, path, }) let contents: any[] = [] if (Array.isArray(response.data)) { // Directory listing contents = response.data.map(entry => ({ uri: entry.html_url, mimeType: entry.type === "file" ? "text/plain" : "text/directory", text: entry.name, })) } else { // File content if (response.data.type === "file") { // If it's text, decode and return as text // If it's binary, return as base64 blob const isText = response.data.encoding === "base64" && response.data.content && response.data.content.match(/^[A-Za-z0-9+/=\s]+$/) if (isText) { const buff = Buffer.from(response.data.content, "base64") contents = [ { uri: uri.href, mimeType: response.data.type, text: buff.toString("utf-8"), }, ] } else { contents = [ { uri: uri.href, mimeType: response.data.type, blob: response.data.content, }, ] } } } return { contents: [ { uri: uri.href, text: JSON.stringify(contents), }, ], } } catch (e: any) { return { contents: [ { uri: uri.href, text: `Error: ${e.message}`, }, ], } } }, ) }