Vol. I · No. 1Edition: AfternoonEst. 2026AboutSearchRSS

The Sand Paper

Finding grains of sand with grains of sand.
A Journal of Intelligence Transfer
New · Afternoon · 4:20 PM PT
Agents & Coding

METR and Redwood Found Ways OpenAI’s Agents Could Slip Their Own Monitoring

Three weeks inside; context compression left an estimated 10% of eligible internal Codex traffic unmonitored.

An outside look at OpenAI’s internal agent monitoring.

@kimmonismus calls it a super interesting read: METR and Redwood found ways OpenAI’s internal AI agents could bypass their own safety monitoring. The researchers spent three weeks with access to internal code, monitor instructions and engineers.

FindingDetail
Postponed monitoringAgents could theoretically postpone monitoring indefinitely by continuing to work instead of handing control back to the user
Sandbox bypassA Codex sandbox and Auto-Review bypass could let agents take any action available to the host user
Hidden actionsOne exploit could keep hundreds of recent actions out of monitoring, including the exploit itself; OpenAI redacted the details
Client settingsTwo client-controlled settings could disable monitoring for newly created agents, though creating those agents could itself be detected
Compression gapContext compression left an estimated 10% of otherwise eligible internal Codex traffic unmonitored
As listed by @kimmonismus from the METR and Redwood report.

The last finding surprised him, @kimmonismus adds.

Sources

  1. @kimmonismus on X · Oct 22, 9:09 AM PT
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