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API Docs MCP Server

@EliFuzz

Repository

Basic information

Category

Developer Tools

Transports

stdio

Author

EliFuzz

Submitted by

nuts diz

About API Docs MCP Server

MCP server for API documentation, supporting GraphQL, OpenAPI/Swagger, and gRPC from local files or remote URLs

#api#documentation#graphql#openapi#swagger#grpc

API Docs MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "api-docs-mcp": {
      "command": "npx",
      "args": [
        "api-docs-mcp"
      ],
      "env": {
        "API_SOURCES": "[{\"name\": \"PetstoreAPI\", \"method\": \"GET\", \"url\": \"https://petstore.swagger.io/v2/swagger.json\", \"type\": \"api\"}]"
      }
    }
  }
}

API Docs MCP Server tools

2

Get a list of all available API methods

Search for a specific API method by name and get its full definition

Overview

What is API Docs MCP?

API Docs MCP is an MCP server that provides tools for interacting with API documentation. It supports GraphQL, OpenAPI/Swagger, and gRPC specifications, fetching schema definitions from local files or remote URLs, caching them, and exposing them through a set of tools.

How to use API Docs MCP?

Configure API sources via the API_SOURCES environment variable, then run the MCP server. The server automatically registers tools from a specified directory. Use the api_docs tool to list available API methods and api_search to retrieve detailed documentation for specific methods.

Key features of API Docs MCP

  • Dynamic tool registration from a specified directory
  • Provides api_docs and api_search tools
  • Schema caching with automatic periodic refresh
  • Supports GraphQL, OpenAPI, and gRPC schemas
  • Loads schemas from local files or remote URLs
  • Environment-based configuration via API_SOURCES

Use cases of API Docs MCP

  • Quickly explore GraphQL schema methods and their arguments without leaving the chat
  • Look up OpenAPI endpoint details during API integration development
  • Browse gRPC service definitions and RPC methods interactively
  • Cache remote API documentation locally for offline or faster access

Frequently asked questions

1

How do I configure API sources?

Set the `API_SOURCES` environment variable to specify the schema files or URLs. The format supports local file paths and remote URLs for GraphQL, OpenAPI, and gRPC.

2

What schema formats are supported?

GraphQL schemas can be loaded from `.graphql`, `.gql`, or JSON introspection results. OpenAPI/Swagger supports YAML and JSON. gRPC supports `.proto` files or reflection from remote URLs.

3

How does caching work?

The server caches schema data after fetching to reduce redundant requests. It automatically refreshes the cache periodically to keep documentation up-to-date.

4

Does the server require any runtime dependencies?

The server runs as an MCP server and is configured entirely through the `API_SOURCES` environment variable. No additional authentication or transport setup is required.

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