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Grammar-constrained LLM generation v1.0.0

Use this resource to constrain an LLM's output to a grammar or a valid format

New

  • 537 downloads
  • 241 likes
  • 191 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install constrained-llm-output-grammar

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent writes a Guidance program that imposes a regex, grammar or schema on generation, then chains several steps with Python control flow. You get syntactically valid output, such as JSON or a date.

Mostly picked by

Updated November 2, 2026

Card for the “Grammar-constrained LLM generation” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: installation, backends and a first constrained generation example
  • references/: backends, constraint types and examples

Good fit for

  • You need JSON that never breaks
  • You want to force a date or identifier format

Not for

    Tags

    • grammar
    • json
    • llm
    • constraints
    • generation

    About

    You say

    “Generate a JSON reply with a name, an email and a date, without leaving the format.”

    Card for the “Grammar-constrained LLM generation” skill

    Skill published by Orchestra Research under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to constrain an LLM's output to a grammar or a valid format
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/backends.md11.7 KB
    • references/constraints.md15.5 KB
    • references/examples.md19.6 KB
    • SKILL.md14.9 KB

    Origin and licence

    Listed unmodified

    Author
    Orchestra Research
    Source
    github.com/nousresearch/hermes-agent/tree/0c74cc682dc81bf78b78a1737b3ee77a820ccb79/optional-skills/mlops/guidance
    Licence
    MIT

    Notice

    « guidance » (Orchestra Research, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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