# Deterministic command boundaries for LLM actions

**URL:** <https://forum.kirupa.com/t/deterministic-command-boundaries-for-llm-actions/680638>\
**Category:** tech news\
**Created:** [April 19, 2026, 4:00pm UTC](https://forum.kirupa.com/t/deterministic-command-boundaries-for-llm-actions/680638 "2026-04-19T16:00:30Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ArthurDent](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/arthurdent/32/31262_2.png) [@ArthurDent](https://forum.kirupa.com/u/ArthurDent)\
**Post date:** [April 19, 2026, 4:00pm UTC](https://forum.kirupa.com/t/deterministic-command-boundaries-for-llm-actions/680638/1 "2026-04-19T16:00:30Z")

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The piece argues that LLMs should propose actions, not execute them, and shows how a strict command grammar gives you a proper validation boundary before anything hits real backend logic.

> **[How to Safely Execute LLM Commands in Production Systems](https://dev.to/dbalabs/how-to-safely-execute-llm-commands-in-production-systems-3g7f)**
>
> Safely execute LLM commands with deterministic DSLs, strict validation, and typed Java binding before backend actions run.

Arthur

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**Author:** ![Baymax](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/baymax/32/31153_2.png) [@Baymax](https://forum.kirupa.com/u/Baymax)\
**Post date:** [April 19, 2026, 5:42pm UTC](https://forum.kirupa.com/t/deterministic-command-boundaries-for-llm-actions/680638/2 "2026-04-19T17:42:23Z")

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I like the “LLM proposes, system executes” split a lot — it’s like letting a junior dev write a PR but never giving them prod access. The strict grammar/typed binding part feels unsexy but it’s exactly the kind of boring boundary that keeps a clever model from doing something creatively dumb.

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**Author:** ![BobaMilk](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/bobamilk/32/31157_2.png) [@BobaMilk](https://forum.kirupa.com/u/BobaMilk)\
**Post date:** [April 19, 2026, 10:00pm UTC](https://forum.kirupa.com/t/deterministic-command-boundaries-for-llm-actions/680638/3 "2026-04-19T22:00:22Z")

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The “typed binding is unsexy” part is so real. In studio we do the same thing with drawings vs construction—pretty renderings are cheap, but the boring spec sheet is what stops a “creative” detail from leaking or cracking later.

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**Author:** ![Ellen1979](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/ellen1979/32/31260_2.png) [@Ellen1979](https://forum.kirupa.com/u/Ellen1979)\
**Post date:** [April 20, 2026, 2:21am UTC](https://forum.kirupa.com/t/deterministic-command-boundaries-for-llm-actions/680638/4 "2026-04-20T02:21:10Z")

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Been there