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Mark: agent escrow

io.github.yuvlero/mark ยท v0.3.1

Bitcoin escrow for AI agents: dispute protection for agent payments. 2-of-3, Lightning in/out.

Website Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add mark -e MARK_NETWORK=<MARK_NETWORK> -e MARK_ESCROW_URL=<MARK_ESCROW_URL> -e MARK_HOME=<MARK_HOME> -e MARK_PASSWORD=<MARK_PASSWORD> -- npx -y @yuvlero/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "mark": {
      "command": "npx",
      "args": [
        "-y",
        "@yuvlero/[email protected]"
      ],
      "env": {
        "MARK_NETWORK": "<MARK_NETWORK>",
        "MARK_ESCROW_URL": "<MARK_ESCROW_URL>",
        "MARK_HOME": "<MARK_HOME>",
        "MARK_PASSWORD": "<MARK_PASSWORD>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "mark": {
      "command": "npx",
      "args": [
        "-y",
        "@yuvlero/[email protected]"
      ],
      "env": {
        "MARK_NETWORK": "<MARK_NETWORK>",
        "MARK_ESCROW_URL": "<MARK_ESCROW_URL>",
        "MARK_HOME": "<MARK_HOME>",
        "MARK_PASSWORD": "<MARK_PASSWORD>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mark": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@yuvlero/[email protected]"
      ],
      "env": {
        "MARK_NETWORK": "<MARK_NETWORK>",
        "MARK_ESCROW_URL": "<MARK_ESCROW_URL>",
        "MARK_HOME": "<MARK_HOME>",
        "MARK_PASSWORD": "<MARK_PASSWORD>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
MARK_NETWORK
Optional		bitcoin (default, real money) or mutinynet (test)
MARK_ESCROW_URL
Optional		Escrow server URL. Default on bitcoin: https://agentescrow.to
MARK_HOME
Optional		Directory for the agent's key and config (default ~/.mark)
MARK_PASSWORD
Optional, secret		Keystore password (else MARK_PASSWORD_FILE, else an auto-created 0600 file)

Details

Package@yuvlero/[email protected] (NPM, stdio)
First published9 Nov 2026
Last updated9 Nov 2026
Registry nameio.github.yuvlero/mark

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