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Don't put your agent guardrails in the system prompt

This story is from 2026-09-26. It is preserved in the archive; the latest stories are on the live feed.

Coding agents write, refactor, and open pull requests at a pace humans can't match. The instinct is to stuff safety into the system prompt: "never push to main," "don't touch secrets," "always run the tests." That feels like control. It isn't. A system prompt is advice to a model. Models are traine…

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  1. 2026-09-26 22:44 · DEV Community — AI
    Don't put your agent guardrails in the system prompt

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