MCPLow riskUnclaimed

Arcaeon

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

arcaeon.ioarcaeon.io/arcaeon★ 1Updated Sep 25, 2026

server.json

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.arcaeon/arcaeon",
  "description": "A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check.",
  "title": "Arcaeon",
  "repository": {
    "url": "https://github.com/Arcaeon-io/arcaeon",
    "source": "github"
  },
  "version": "0.9.0",
  "websiteUrl": "https://arcaeon.io",
  "packages": [
    {
      "registryType": "pypi",
      "registryBaseUrl": "https://pypi.org",
      "identifier": "arcaeon",
      "version": "0.9.0",
      "runtimeHint": "uvx",
      "transport": {
        "type": "stdio"
      },
      "runtimeArguments": [
        {
          "description": "The MCP server needs the MCP Python SDK (the package's [mcp] extra); the base install has no dependencies.",
          "value": "mcp>=2.0.0,<3",
          "type": "named",
          "name": "--with"
        }
      ],
      "packageArguments": [
        {
          "description": "The verb that starts the MCP server on stdio.",
          "value": "mcp",
          "type": "positional"
        }
      ],
      "environmentVariables": [
        {
          "description": "Witness API key for the two paid tools (witness_pin, witness_renew). Free tools work without it.",
          "format": "string",
          "isSecret": true,
          "name": "ARCAEON_KEY"
        }
      ]
    }
  ]
}

Permissions

DeclaredDetected
Runs code—python
Installs—pypi:arcaeon@0.9.0
Runs install scripts—None
NetworkNoneNone
Needs credentialsARCAEON_KEYARCAEON_KEY
Outside the workspace—None
Agent tools—None

Checks

Low risk · Nothing worth a warning was found.

Not reviewed by a person · Checked by rules; the model review is not switched on yet.

Versions

  1. #10.9.0latestOct 7, 2026