mcp-graphql

Overview

This MCP server provides a robust interface for Large Language Models to interact with GraphQL APIs. It automatically attempts to introspect GraphQL schemas and execute queries, with mutation operations disabled by default for security. The server can work with local schema files, remote schema URLs, or perform runtime introspection queries, making it flexible for various GraphQL implementations.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• introspect-schema

  Retrieves the GraphQL schema using introspection or local/schema file.

  Try:Get the GraphQL schemaTry:Show me all available types and fieldsTry:Introspect the GraphQL API
• query-graphql

  Execute GraphQL queries against the endpoint.

  Try:Run a GraphQL query to get usersTry:Execute a GraphQL mutationTry:Fetch data from GraphQL API

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Installation

npx -y @smithery/cli install mcp-graphql --client claude

{
    "mcpServers": {
        "mcp-graphql": {
            "command": "npx",
            "args": ["mcp-graphql"],
            "env": {
                "ENDPOINT": "http://localhost:3000/graphql"
            }
        }
    }
}

FAQ

Are GraphQL mutations enabled by default?

No, mutations are disabled by default as a security measure to prevent LLMs from modifying your database or service data. You must explicitly enable them by setting ALLOW_MUTATIONS=true.

Can I use a local schema file instead of introspection?

Yes, you can specify a local schema file path using the SCHEMA environment variable, or provide a URL to a remote schema file.

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