Two AI agents trade with each other. Each one keeps its memory in a plain text file you could open in Notepad. Press play to watch a real trade — and watch both memory files read, write and refuse in step. Then see what happens when we change a single line by hand.
A buyer that needs 2 widgets, and a seller that sells them for $19.95 each. Both are Claude, deciding for themselves what to do.
The two side panels are the agents' actual memory files. They light up as each agent reads, writes, or gets a write refused.
Play the normal run first. Then pick one of the tampered runs: we opened one agent's file, changed one line, and ran the same trade again.