mcp4gql - GraphQL MCP Server

@jorgeraad

代码仓库

基本信息

分类

其他

许可证

MIT

传输方式

stdio

作者

jorgeraad

关于 mcp4gql - GraphQL MCP Server

MCP server for interacting with a GraphQL server

mcp4gql - GraphQL MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "mcp4gql": {
      "command": "npx",
      "type": "stdio",
      "args": [
        "-y",
        "mcp4gql"
      ],
      "env": {
        "GRAPHQL_ENDPOINT": "YOUR_GRAPHQL_ENDPOINT_URL",
        "AUTH_TOKEN": "YOUR_OPTIONAL_AUTH_TOKEN"
      }
    }
  }
}

mcp4gql - GraphQL MCP Server 工具

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点击上方按钮,在临时沙箱中运行此服务器并实时获取工具列表。

概览

What is mcp4gql?

mcp4gql is a Node.js/TypeScript server that implements the Model Context Protocol (MCP), acting as a bridge for MCP clients like Cursor to interact with a target GraphQL API. It is intended for developers who want to query and introspect GraphQL APIs through MCP-compatible tools.

How to use mcp4gql?

Configure the environment variables GRAPHQL_ENDPOINT (the target GraphQL API URL) and optionally AUTH_TOKEN (a bearer token). Then configure an MCP client such as Cursor or Claude Desktop to run the server via npx, passing those environment variables. The server communicates over stdio and exposes the tools introspectGraphQLSchema and executeGraphQLOperation to the client.

Key features of mcp4gql

Implements the MCP Server class from @modelcontextprotocol/sdk
Communicates with clients via standard input/output (stdio transport)
Uses axios to send requests to the configured GraphQL endpoint
Exposes introspectGraphQLSchema tool for fetching the API schema
Exposes executeGraphQLOperation tool for running queries or mutations

Use cases of mcp4gql

Exploring a GraphQL API’s schema from within an MCP-enabled editor
Running ad-hoc GraphQL queries or mutations without leaving the development environment
Automating GraphQL operations through MCP workflows in Cursor or Claude Desktop

常见问题

What tools does mcp4gql expose to MCP clients?

It exposes `introspectGraphQLSchema` to fetch the target API’s schema via introspection, and `executeGraphQLOperation` to execute arbitrary GraphQL queries or mutations with optional variables and operation name.

How do I configure mcp4gql for Cursor?

In Cursor MCP Settings, add a new global MCP server with the command `npx -y mcp4gql` and the required environment variables `GRAPHQL_ENDPOINT` and optional `AUTH_TOKEN`.

How do I configure mcp4gql for Claude Desktop?

In Claude Desktop settings, open Developer > Edit Config and add an entry under `mcpServers` using `npx` with `-y mcp4gql` as arguments and the same environment variables.

What dependencies does mcp4gql require?

It is a Node.js/TypeScript project that depends on `@modelcontextprotocol/sdk`, `axios`, and the standard Node.js runtime. It is run via `npx`, so Node.js must be installed.

How does authentication work with the target GraphQL API?

Authentication is optional. If the `AUTH_TOKEN` environment variable is set, the server includes an `Authorization: Bearer <token>` header in all GraphQL requests.

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