GH-600 MCP Server Lab

A runnable Model Context Protocol server, by Certy. Maps to GH-600 domain 2.0 - Tooling, MCP Servers & Execution Context.

Deterministic and local: the tools use fake in-memory data, so the server runs with no network and no tokens.

Run it

npm install
npm test            # 7 tool/security tests
npm run typecheck
npm start           # starts the MCP server over stdio

Connect a host with mcp-config.example.json (runs npx tsx src/index.ts).

Related MCP server: Basic MCP Server

What is here

• src/index.ts - a real MCP server (using @modelcontextprotocol/sdk) that registers four tools and one resource.

• src/tools/ - pure tool functions (getRepoInfo, listOpenIssues, createIssueSummary, safeFileRead).

• src/security/ - an allowlist and a rate limiter.

• src/resources/repoContext.ts - a read-only MCP resource.

• docs/ - MCP overview, tool registration, stdio vs SSE, execution context.

Links

• Free GH-600 course and mock exam: https://certy.pro

• Course content: https://github.com/CertyPro/certy-gh600-course-content

Licence

MIT.