Fleet: ADK / A2A agents, run 1 → run 2 Referee: 3-lens Gemini panel · Vertex AI Ground truth: advisory memory + verified ledger

Verify in the message path. Remember what survives.

Every claim an ADK/A2A agent emits is judged by a three-lens adversarial Gemini panel against memory as ground truth; a deterministic tripwire hard-blocks money/auth claims with no model in the loop. What survives is written back, verified. Same fleet, same claims, one run later — nothing changed but memory.

Findings — honest counters, measured not asserted

Run 1cold memory

Run 2warm memory

Independent examination of the referee

Herd Immunity — verification crosses fleet boundaries

Live playground Try to lie to the referee — live playground →

Type your own claim; watch the tripwire and the three lenses rule on it in seconds. Demo memory is read-only; your session ledger is ephemeral.