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Kiro MCP configuration docs You can find your API key at ref.tools/keys

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Install Steps

Option 1: Click this link. Add Ref to Kiro Make sure you update disabled: false and fill in your API key. Option 2: Manual install.
  1. Open the Kiro left side panel via the Kiro ghost icon.
  2. At the bottom, see the MCP SERVERS sections and mouse over it to see the Open MCP Config button. This will open mcp.json
  3. Update mcp.json as follows:
{
  "mcpServers": {
    "Ref": {
      "url": "https://api.ref.tools/mcp",
      "headers": {
        "x-ref-api-key": "<YOUR_API_KEY>"
      },
      "disabled": false,
      "autoApprove": ["ref_search_documentation", "ref_read_url"]
    }
  }
}

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Verify

  1. Open the MCP Server view in the Kiro feature panel
  2. You should see Ref listed with a green status indicator
  3. Start a new chat and issue the following prompt: 
what is ref tools mcp, search the docs with ref
This should result in a ref_search_documentation tool call being executed.

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Get help

If you have any issues, please reach out to help@ref.tools. We’re happy to help you get started!