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Porting a Semgrep rule to other languages v1.0.0

Use this resource to adapt an existing Semgrep rule to one or more target languages

New

  • 463 downloads
  • 200 likes
  • 218 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install semgrep-rule-language-porting

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 checks whether the rule applies to each target language, writes the tests before the rule, then produces an independent rule and test folder for each language. It does not write a new rule from scratch. You get a ported, tested rule for each language.

Mostly picked by

Updated November 2, 2026

Card for the “Porting a Semgrep rule to other languages” skill

Details

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

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What you get

  • SKILL.md: input and output specification, four-phase flow
  • references/language-syntax-guide.md: syntax equivalences between languages
  • references/applicability-analysis.md: applicability analysis

Good fit for

  • A Python Semgrep rule must also cover your Go code
  • You are extending a flaw detection to your Java and JavaScript services

Not for

    Tags

    • semgrep
    • porting
    • languages
    • rules
    • tests

    About

    You say

    “Port this Python Semgrep rule to Go and Java, with a test set per language.”

    Card for the “Porting a Semgrep rule to other languages” skill

    Skill published by waybarrios 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 adapt an existing Semgrep rule to one or more target languages
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/applicability-analysis.md7.6 KB
    • references/language-syntax-guide.md7.6 KB
    • references/workflow.md14 KB
    • SKILL.md8 KB

    Origin and licence

    Listed unmodified

    Author
    waybarrios
    Source
    github.com/waybarrios/opencode-power-pack/tree/c3328ad1633c1561026532f29b718a2380bc52ee/skills/semgrep-rule-variant-creator
    Licence
    MIT

    Notice

    « semgrep-rule-variant-creator » (waybarrios, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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