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n8n expression tests v1.0.0

Use this resource to test n8n expressions before they go live

New

  • 426 downloads
  • 189 likes
  • 190 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install n8n-expression-syntax-tests

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 syntax, tests expressions against several context scenarios, checks null-safe access and flags risky usage. You get test cases for the expressions and suggested fixes.

Mostly picked by

Updated November 2, 2026

Card for the “n8n expression tests” skill

Details

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

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What you get

  • SKILL.md : syntax, context variables and common errors
  • SKILL.md : safe data access and array operations

Good fit for

  • An expression fails when a field is missing
  • You have a dozen expressions to check before a migration

Not for

    Tags

    • n8n
    • expressions
    • tests
    • data

    About

    You say

    “Write test cases for the transformation expressions in this workflow, with and without missing fields.”

    Card for the “n8n expression tests” skill

    Skill published by proffesor-for-testing 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 test n8n expressions before they go live
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md11 KB

    Origin and licence

    Listed unmodified

    Author
    proffesor-for-testing
    Source
    github.com/proffesor-for-testing/agentic-qe/tree/b177b2315521376b83f2eed40e4994fd7581d067/.kiro/skills/qe-n8n-expression-testing
    Licence
    MIT

    Notice

    « qe-n8n-expression-testing » (proffesor-for-testing, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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