Arcaeon MCP Server

io.arcaeon/arcaeon

Repository Registry

What is the Arcaeon MCP server?

A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check.

How to install Arcaeon

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

ARCAEON_KEY
secret
Witness API key for the two paid tools (witness_pin, witness_renew). Free tools work without it.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "arcaeon": {
      "command": "uvx",
      "args": [
        "arcaeon",
        "--with",
        "mcp>=2.0.0,<3",
        "mcp"
      ],
      "env": {
        "ARCAEON_KEY": "<YOUR_ARCAEON_KEY>"
      }
    }
  }
}

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