Writing
Notes from production
Incidents, post-mortems and design arguments from running autonomous agents that spend real money. Mostly about the failures that don't look like failures.
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Three shapes of a runaway
Five months of production agent logs, and almost every expensive incident is one of three patterns. None of them look like failures while they're happening.
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Reading usage without reading prompts
A guardrail sees everything an agent says. Here's how to build one that enforces a spend cap without ever being able to reconstruct a conversation.