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Showing content from https://www.apollographql.com/docs/apollo-mcp-server/quickstart below:

Get Started - Apollo GraphQL Docs

Let's run Apollo MCP Server for the first time! You will:

• Understand an MCP Server example

• Run an MCP Server example

• Connect an MCP client (Claude Desktop) to the MCP Server

Want a quick overview of what we can do with Apollo MCP Server? Check out this YouTube video or blog post about what we'll cover in more detail here.

In this quickstart, you'll create a working AI integration where Claude Desktop can query space-related data through GraphQL. By the end, you'll be able to:

• Ask Claude natural questions like "Who are the astronauts currently in space?" or "What rocket launches are coming up?"

• See Claude use MCP tools to fetch real-time data from The Space Devs API

• Understand how GraphQL operations become AI-accessible tools

Here's what the end result looks like:

You: "Tell me about the astronauts currently in space" Claude: [Uses GetAstronautsCurrentlyInSpace tool] "There are currently 7 astronauts aboard the International Space Station..."

This example uses a pre-built space API, but the same approach works with any GraphQL API - including your own production services.

If you learn best with videos and exercises, this

teaches you how to set up Apollo MCP Server and create tools from

GraphQL

operations.

• Clone the Apollo MCP Server repo

• Install Apollo Rover CLI v0.35 or later

This guide uses an MCP example from the Apollo MCP Server repo. The example uses APIs from The Space Devs , and it defines a federated graph and the GraphQL operations of the graph to expose as MCP tools.

The example files located in graphql/TheSpaceDevs/ include:

• A federated graph connecting to The Space Devs API

  • supergraph.yaml is a supergraph configuration file used by the Rover CLI

• 4 pre-built operations that become your AI tools:

  • ExploreCelestialBodies - Search planets, moons, and stars

  • GetAstronautDetails - Get info about specific astronauts

  • GetAstronautsCurrentlyInSpace - See who's in space right now

  • SearchUpcomingLaunches - Find upcoming rocket launches

1. From the root directory of your local repo, run rover dev to start a local graph with an MCP Server:

   This command:

   • Starts a local graph using the supergraph configuration

   • Starts an MCP Server with the --mcp flag

   • Provides a configuration file with MCP Server options

   See the command reference for a list of available configuration options.

2. Start MCP Inspector to verify the server is running:

3. Open a browser and go to http://127.0.0.1:6274

4. In Inspector:

   • Select Streamable HTTP as the Transport Type

   • Enter http://127.0.0.1:5000/mcp as the URL

   • Click Connect, then List Tools

   You should see the tools from your server listed.

We're using Claude as our AI Assistant (acting as our MCP Client).

First, locate your Claude configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Windows: %APPDATA%\Claude\claude_desktop_config.json

• Linux: ~/.config/Claude/claude_desktop_config.json

Then add the following configuration

1. Open Claude's JSON config file and add this configuration:

You need Node v18 or later installed for

to work. If you have an older version of Node, uninstall it and install the latest version from

.

1. Restart Claude.

Let's verify everything is working:

1. In Claude Desktop, type: "What MCP tools do you have available?"

   • Claude should list tools like ExploreCelestialBodies, GetAstronautDetails, etc.

2. Try a real query: "Who are the astronauts currently in space?"

   • Claude should use the GetAstronautsCurrentlyInSpace tool and return current data

3. If Claude can't see the tools:

   • Ensure you restarted Claude Desktop after editing the config

   • Check that your MCP server is still running

   • Verify the port numbers match between your server and Claude config

• Error: "Port 5000 is already in use"

  • Solution: Kill any existing processes using port 5000 or specify a different port with the transport.port option or APOLLO_MCP_TRANSPORT__PORT env variable

• Error: "Failed to load supergraph configuration"

  • Solution: Verify you're running the command from the repo root directory

  • Solution: Check that the path to supergraph.yaml is correct

• Error: "Failed to connect to server"

  • Solution: Ensure the MCP server is running (check terminal output)

  • Solution: Verify you're using the correct URL (http://127.0.0.1:5000/mcp)

  • Solution: Check if your firewall is blocking the connection

• Problem: Claude doesn't recognize the tools

  • Solution: Verify the config file path is correct for your OS

  • Solution: Ensure the JSON is properly formatted (no trailing commas)

  • Solution: Try restarting Claude Desktop completely

• Problem: "Connection refused" errors

  • Solution: Check if the MCP server is still running

  • Solution: Verify the port numbers match in both the server and Claude config

• Problem: "MCP thespacedevs: Server disconnected" errors

  • Solution: Uninstall older versions of Node. mcp-remote only works with Node v18 or later.

  • Solution: Restart Claude Desktop

• Error: "Operation not found"

  • Solution: Verify the operation files exist in the specified path

  • Solution: Check that the operation names match exactly

• Error: "Schema validation failed"

  • Solution: Ensure your GraphQL operations match the schema

  • Solution: Check for syntax errors in your operation files

If you're still having issues:

1. Check the Apollo MCP Server GitHub issues

2. Join the Apollo Community MCP Server Category

3. Contact your Apollo representative for direct support

See the user guide to learn how to create tools from:

• Operation files

• Persisted query manifests

• Schema introspection

When you are ready, deploy the MCP server.

Check out these blog posts to learn more about Apollo MCP Server:

• Getting started with Apollo MCP Server

• The Future of MCP is GraphQL

1. Download the binary of the latest version of Apollo MCP Server
2. Use MCP Inspector to run the server:
3. Configure Claude Desktop to use STDIO:

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