Claude Code (CLI)

Project-level config

Create or edit .mcp.json in your project root:

json

{
  "mcpServers": {
    "ab-test-library": {
      "url": "https://mcp-server-production-c654.up.railway.app/mcp",
      "headers": {
        "Authorization": "Bearer kstk_YOUR_KEY"
      }
    }
  }
}

Global config (all projects)

To make the tools available in every project, add it to your global config:

json

// ~/.claude/.mcp.json
{
  "mcpServers": {
    "ab-test-library": {
      "url": "https://mcp-server-production-c654.up.railway.app/mcp",
      "headers": {
        "Authorization": "Bearer kstk_YOUR_KEY"
      }
    }
  }
}

Verify

Restart Claude Code. The 7 tools appear automatically. Try:

Search for CTA button A/B tests that won