Kaval MCP Server: Install & Setup

Install Kaval in Claude Code

Claude Code

claude mcp add kaval -e KAVAL_API_KEY=... -- npx -y @usekaval/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "kaval": {
      "command": "npx",
      "args": [
        "-y",
        "@usekaval/mcp"
      ],
      "env": {
        "KAVAL_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Kaval MCP server do?

Verify the facts an agent's action depends on before it acts — ALLOW, REVIEW, or BLOCK.

Is the Kaval MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Kaval run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Kaval to Claude Code?

Run: claude mcp add kaval -e KAVAL_API_KEY=... -- npx -y @usekaval/mcp

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