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Card 708 of 9992026-08-27 issue

Observed arrival · 2026-08-27

Rook, the black box for robot fleets

rookreplay.com Observed source
Editorial interest 88/100 Selection signal · not a rating of the site

Rook records a robot fleet’s decision-layer messages so an incident can be replayed deterministically on a laptop and retained as a regression test.

Landing page captured for the 2026-08-27 issue.

Field notes

Rook places its recorder at the boundary of a fleet’s decision code, capturing every message and emitted effect in order before grading the recording. Its example uses real decision code with simulated robots in an Open-RMF blockade: 13 minutes, 1,516 deliveries, and a displayed divergence after byte 13,227 is rewritten. The page says perception, physics, radio, and robot motion are not replayed; they are read back from the captured record while the decision layer runs again.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
$PaidCommerce or pricing visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use

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rookreplay.com

Landing page observed 2026-08-27. The live site may have changed.