Arch Tools MCP Server

MCP server for Arch Tools — exposes all API tools to MCP-compatible clients.

Features

• Dynamically discovers tools from GET /v1/tools
• Dual transport: Stdio (local CLI) and SSE (web/hosted agents)
• Automatic tool registration with descriptions and credit costs
• Routes invocations through authenticated API calls

Setup

cd mcp
cp .env.example .env  # Set ARCH_API_BASE_URL and ARCH_API_KEY
npm install

Usage

Stdio (for Claude Desktop, local tools)

npm run dev

SSE (for web-based MCP clients, hosted agent platforms)

MCP_TRANSPORT=sse npm run dev

SSE endpoints:

• GET /sse — SSE connection
• POST /messages?sessionId=... — message handler
• GET /health — health check

Claude Desktop config

{
  "mcpServers": {
    "arch-tools": {
      "command": "npx",
      "args": ["-y", "arch-tools-mcp"],
      "env": {
        "ARCH_API_BASE_URL": "https://archtools.dev",
        "ARCH_API_KEY": "at_sk_your_key_here"
      }
    }
  }
}

Deploy SSE on Render

Create a separate Web Service for the MCP SSE server:

• Root directory: mcp
• Build: npm install && npm run build
• Start: npm run start:sse
• Environment: ARCH_API_BASE_URL, ARCH_API_KEY, MCP_TRANSPORT=sse, MCP_SSE_PORT=10000