Brief, mostly facts

Ultimate is an experimental agent harness built on Pi Durable

Daniel Griesser's project runs coordinator, worker, reviewer and scout subagents. It hot-reloads its own core through a port-holding supervisor, and it is experimental.

Read the source at danielgriesser.com

What the research found

Daniel Griesser's Ultimate is an experimental web agent harness built on Pi Durable that orchestrates coordinator, worker, reviewer and scout subagents and hot-reloads its own core via a port-holding supervisor.

Claims and how well the evidence supports them

Ultimate is an experimental agent harness built on Pi Durable 99%
Ultimate was first built by a Claude Code session using Opus 5.5 97%
A supervisor holds the port, starts a new process, checks it boots, then hands over so the browser reconnects 99%

Evidence

danielgriesser.com https://danielgriesser.com/posts/ultimate

Actionability rated low.