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The Vaults.fyi MCP server exposes the full API as tools that Claude Desktop can call directly. Once configured, you can ask Claude to find yield opportunities, compare vaults, and prepare transactions — all backed by live onchain data. These instructions cover macOS setup.
1

Install Homebrew

If you don’t already have Homebrew installed, visit brew.sh and follow the installation instructions there.
2

Install Node.js via Homebrew

Update Homebrew and install Node.js (which includes npm):
brew update

brew install node
3

Configure Claude Desktop

Open the Claude Desktop configuration file at:
~/Library/Application Support/Claude/claude_desktop_config.json
Insert the following configuration, replacing your-api-key with your Vaults.fyi API key:
claude_desktop_config.json
{
  "mcpServers": {
    "vaults": {
      "command": "npx",
      "args": ["@vaultsfyi/mcp"],
      "env": {
        "VAULTS_API_KEY": "your-api-key"
      }
    }
  }
}
Replace your-api-key with a real API key. You can request access at vaultsfyi.fillout.com/t/tLA9t6HyAFus.
4

Restart Claude Desktop

Save the configuration file and restart Claude Desktop. The hammer icon at the bottom of the Claude window should display 1 MCP Tool available (or more if you have other MCP servers configured). The Vaults.fyi server is ready to use.