datumwise

Install

Run it in two minutes.

No signup, no arguments. A clarify, a refuse, and a disclose print on your machine as real wire JSON.

Run it — Python

Both packages are on PyPI (Apache-2.0).

pip install columna-core columna-server
columna-server demo --play

The three-mood transcript that prints is the same one this site is built from — generated by running the shipped package.

Connect an agent — MCP

The demo serves five read-only tools over MCP stdio. To wire it into Claude Desktop, add to claude_desktop_config.json:

{
  "mcpServers": {
    "columna": { "command": "columna-server", "args": ["demo"] }
  }
}

See the full config + a real clarify → refuse → disclose transcript.

Run the server — Docker

The read-only demo image (also what powers the live demo endpoint):

docker run --rm ghcr.io/datumwise/columna-demo demo --play

Serves only the packaged demo Manifold; read-only by construction.

Or just watch it run

The live demo on this site executes the same package against a hosted endpoint — see the four moods on the homepage ↓.