mcpgql

The GraphQL Overlord’s bridge to MCP.

mcpgql is a CLI tool and a federated bridge connecting any GraphQL endpoint directly to the Model Context Protocol (MCP) ecosystem, built upon mcp-graphql-enhanced.

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Why mcpgql?

• Zero-Config Integration: Seamlessly connect LLMs to your graph data.
• No Environment Pollution: Unlike standard setups, no environment variables need to be declared in your claude_desktop_config.json. All configuration (endpoints, headers, mutation toggles) is handled dynamically in your terminal gateway.
• Federated Power: Engineered to work flawlessly with mcp-remote for decentralized, multi-endpoint environments.
• Real-time Mutations: Full support for write operations (like publishToDiscord) directly from your AI agent.

Quick Start

Run the bridge via the terminal command:

mcpgql

The interactive dialog will automatically guide you through setting up your endpoints and required environment variables:

--- Select Endpoints (Enter to confirm) ---
 [✓]  1. mcp
 [ ]  2. neo4j
 [ ]  3. github
--- Environment variables & Config ---
[NO] 4. Allow Mutations
[OK] 5. Headers (Loaded from: /home/mcpgql/headers.json)
[+]  6. Add New Endpoint

Enter number to toggle/edit (or Enter to proceed): 

1. Terminal (HTTP GraphQL Gateway)
2. MCP Inspector (stdio)
Select mode (1 or 2): 1
[INFO] Launching with ENDPOINT=https://mcp-discord.vercel.app/api/graphiql
[DEBUG] Executing: node /home/mcp-graphql-enhanced/dist/index.js

Press [r] to reconfigure endpoints/mode • Press [q] or [Ctrl+C] to quit

[BOOT] Initializing schema sync for: https://mcp-discord.vercel.app/api/graphiql
[WARN] Port 6274 is in use. Trying 6275...
[SYSTEM] Federated Bridge active on port 6275
📡 MCP Endpoint: http://localhost:6275/mcp
🎨 GraphiQL: http://localhost:6275/graphiql

Integrate into Claude Desktop with a minimal configuration:

{
  "mcpServers": {
    "mcpgql": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "http://localhost:6274/mcp"
      ]
    }
  }
}

Proof of Concept

• Real-time Mutation: Successfully executed complex GraphQL mutations (publishToDiscord) directly from the Claude interface.
• Integration Log: View the live integration proof for this session.
• Success Status: The integration verifies node querying and response transmission with 100% precision.