Anthropic API Server (TypeScript)

What is Anthropic API Server (TypeScript)?

Anthropic API Server (TypeScript) is a TypeScript-based MCP server that provides a secure interface for connecting to Anthropic’s Claude API. It gives developers a ready‑to‑use backend with high test coverage, streaming support, function calling, and a clean REST API.

How to use Anthropic API Server (TypeScript)?

Clone the repository, install dependencies (npm install), copy .env.example to .env, and set your ANTHROPIC_API_KEY. Run in development with npm run dev, build and start for production with npm run build then npm start, or invoke directly with npx mcp-p-anthropic-api-server. Use the exposed endpoints (GET /api/health, POST /api/messages, etc.) to interact with Claude.

Key features of Anthropic API Server (TypeScript)

• Connects to Anthropic API using the official SDK
• Supports streaming responses for real‑time output
• Enables function calling / tool usage by Claude
• Validates input with Zod schemas
• Provides a built‑in logging system
• Can be run instantly via npx

Use cases of Anthropic API Server (TypeScript)

• Build AI‑powered chatbots and assistants using Claude
• Create custom tools that Claude can invoke through the /api/tools/execute endpoint
• Integrate Claude’s streaming completions into web or desktop applications
• Use with Claude Desktop by pointing to the server in claude_desktop_config.json

FAQ from Anthropic API Server (TypeScript)

Why can’t I connect to the Anthropic API?

Check that your ANTHROPIC_API_KEY in the .env file is correct, verify your internet connection, and try the direct API example at examples/direct-anthropic-api.js.

I get “TypeError: app.address is not a function” when running tests.

This occurs with supertest when the app object isn’t a valid Express application. Use direct mock tests instead (see api-coverage-fixed.test.ts) or intercept route handlers directly.

How do I add a new tool?

Edit src/services/tools.ts and call registerTool() with the tool’s schema and an async handler. An example for a getWeather tool is provided in the README.

What runtime does the server require?

It requires Node.js and npm. TypeScript compilation is handled by the included tsconfig.json.

How do I run the test suite?

Use npm test for all tests, npm run test:validation for schema validation tests, npm run test:integration for integration tests, or npm run test:coverage for a coverage report.