mcp-graphql-toolkit

A Model Context Protocol (MCP) server designed to permit Large Language Models (LLMs) to communicate with GraphQL endpoints. This specialized implementation equips models with schema discovery (introspection) and arbitrary query execution features, fostering dynamic utilization of GraphQL services.

Operational Guide

Execute mcp-graphql-toolkit specifying the target endpoint; it will autonomously attempt to perform schema introspection.

Command Line Parameters

Parameter	Purpose	Default Value
--endpoint	The Uniform Resource Locator (URL) for GraphQL	http://localhost:4000/graphql
--headers	A stringified JSON object containing requisite request headers	{}
--enable-mutations	Toggle for permitting write/update operations (off by default)	false
--name	Identifier for this specific MCP server instance	mcp-graphql-toolkit
--schema	File path pointing to a static GraphQL schema definition (optional)	-

Usage Illustrations

# Standard invocation against a locally hosted GraphQL service
npx mcp-graphql-toolkit --endpoint http://localhost:3000/graphql

# Incorporating specific authorization headers
npx mcp-graphql-toolkit --endpoint https://api.example.com/graphql --headers '{"Authorization":"Bearer token123"}'

# Activating mutation capabilities
npx mcp-graphql-toolkit --endpoint http://localhost:3000/graphql --enable-mutations

# Utilizing a pre-defined local schema definition file
npx mcp-graphql-toolkit --endpoint http://localhost:3000/graphql --schema ./my-local-schema.gql

Exposed Utilities

The server exposes two primary operational utilities:

1. introspect-schema: Fetches the complete GraphQL service definition. Employ this tool initially if the schema representation is not readily available as a direct resource. This relies either on the provided local schema file or on executing an introspection query against the endpoint.

2. query-graphql: Authorized to execute arbitrary GraphQL queries against the designated endpoint. Write operations (mutations) remain restricted unless explicitly activated via the --enable-mutations flag.

Available Data Resources

• graphql-schema: The system makes the GraphQL schema definition accessible as a consumable resource for client applications. This source material is derived either from the static file path or from the result of the introspection query.

Deployment Instructions

Automated Installation via Smithery

To deploy the GraphQL MCP Toolkit to Claude Desktop automatically using Smithery:

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

Manual Configuration

Configuration can be integrated directly into the client's settings file:

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

Safety Protocols

By default, write operations (mutations) are deactivated as a fundamental safeguard, preventing unintended data modifications by the LLM agent. Exercise rigorous caution before enabling this functionality within production environments.

Customization Guidance

This serves as a highly generalized framework, granting extensive introspection permissions and full operational latitude, including mutations. Should your deployment require tighter control, it is recommended to engineer a derivative MCP that explicitly limits tool invocation to predefined query fields and/or variable structures. This entry can serve as a foundational template for such specialized adaptations.

WIKIPEDIA: XMLHttpRequest (XHR) represents an Application Programming Interface embodied by a JavaScript object. Its methods facilitate the transmission of Hypertext Transfer Protocol (HTTP) requests from a client-side web browser to a remote web server. These capabilities permit browser-based software to dispatch requests post-page load and receive subsequent information asynchronously. XMLHttpRequest forms a fundamental constituent of Asynchronous JavaScript and XML (Ajax) programming paradigms. Before Ajax prevalence, traditional methods like hyperlink navigation and form submissions were the principal means of server interaction, frequently necessitating a full page refresh.

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== Inter-Domain Communications == During the nascent stages of the World Wide Web, it became apparent that security vulnerabilities could arise from unrestricted communication bet