Connect your Runtype MCP Surface to Claude Desktop so Claude can use your Capabilities as tools during conversations.
Prerequisites
- Claude Desktop installed (download from anthropic.com)
- An active MCP Surface in Runtype
- MCP server URL from your Surface settings (found in the Ship tab)
With OAuth (recommended)
- Open Claude Desktop.
- Go to Settings > Developer > Edit Config.
- Add the MCP server URL from the Ship tab to
mcpServers.
- Restart Claude Desktop.
- Authorize in the browser prompt.
With API Key
- Open Claude Desktop.
- Go to Settings > Developer > Edit Config.
- Add the provided config from the Ship tab to
mcpServers.
- Replace
YOUR_API_KEY with an MCP API key (with the mcp_ prefix) from the Keys tab.
- Restart Claude Desktop.
Config file location:
- macOS:
~/Library/Application Support/Claude/claude_desktop_config.json
- Linux:
~/.config/Claude/claude_desktop_config.json
- Windows:
%APPDATA%\Claude\claude_desktop_config.json
If you already have other MCP servers configured, add the Runtype entry alongside them.
Verify connection
Check that your tools are available:
- Start a new conversation in Claude
- Look for the tools indicator (hammer icon or similar)
- Click to see available tools
- Your Runtype Capabilities should be listed
Using your Capabilities
Claude will automatically invoke your tools when relevant. You can also explicitly ask Claude to use them:
“Use the customer-lookup tool to find information about customer ID 12345”
Claude calls your Runtype Capability and uses the response in its answer.
Give your Capabilities descriptive names and detailed descriptions. Claude uses this information to decide when to invoke each tool.
Troubleshooting
Tools not appearing:
- Check the Developer tab in Settings for connection errors
- Verify your API key is valid and uses the
mcp_ prefix
- Ensure MCP Surface status is Active
- Try restarting Claude Desktop
Tools failing when invoked:
- Check execution logs in Runtype
- Verify Capabilities are working via API or chat Surfaces
- Review MCP authentication settings
Next steps