Fixzi — MCP & API Schema Drift Monitor MCP server

Fixzi MCP Server

Monitor MCP servers, API contracts, and AI output schemas — from inside Claude Code, Cursor, or any MCP client.

Your MCP servers, APIs, and AI outputs can break while still returning 200. Fixzi watches the contracts your integrations depend on, classifies every change (breaking / warning / info), and alerts you before your users hit it. This MCP server lets your AI tools query and operate those monitors directly.

Connect

Claude Code

claude mcp add --transport http fixzi https://fixzi.ai/api/mcp \
  --header "Authorization: Bearer YOUR_FIXZI_API_TOKEN"

Or add to your project's .mcp.json:

{
  "mcpServers": {
    "fixzi": {
      "type": "http",
      "url": "https://fixzi.ai/api/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_FIXZI_API_TOKEN"
      }
    }
  }
}

Claude Desktop

Add to claudedesktopconfig.json:

{
  "mcpServers": {
    "fixzi": {
      "type": "streamable-http",
      "url": "https://fixzi.ai/api/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_FIXZI_API_TOKEN"
      }
    }
  }
}

Get your API token at https://fixzi.ai/settings/api-tokens. When creating the token, grant the abilities for the tools you want to use (see below).

Tools

Monitoring (MCP servers, API contracts, AI validators)

AI output validation

Example prompts

Once connected, ask your agent things like:

• "Check if my MCP server changed this week" — chains fixzilistmonitors → fixzigetrecent_changes
• "Is my payments API contract still healthy?"
• "Set up a monitor for the MCP server I just deployed at https://example.com/mcp"
• "Run my product-description validator and tell me if the schema still passes"

Requirements

• MCP server access requires the Pro+ plan — see https://fixzi.ai/pricing
• Fixzi's web app includes a free tier (1 monitor of each type, daily checks, email alerts) and free tools, including a no-signup MCP Server Checker to test any MCP server instantly.

Learn more

• How to monitor your MCP server for breaking changes
• Why HTTP 200 doesn't mean your MCP server is working
• MCP integration docs