Markproof

Overview

Markproof is a Model Context Protocol server that watermarks and C2PA-signs AI-generated images and audio to comply with EU AI Act Article 50, and verifies signed files. Any MCP-compatible AI assistant can call Markproof's tools directly, letting the model decide when to use them during conversations or agent runs.

The server runs locally via the npm package markproof-mcp, which communicates over stdio on your machine. You'll need to provide your MARKPROOF_API_KEY through environment variables to authenticate. The latest release is v0.3.2.

Markproof is categorized as a File System tool on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and others. If you maintain Markproof, claim this listing to verify ownership and keep the information current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "markproof": {
      "command": "npx",
      "args": [
        "-y",
        "markproof-mcp"
      ],
      "env": {
        "MARKPROOF_API_KEY": "<markproof-api-key>"
      }
    }
  }
}

Requires MARKPROOF_API_KEY