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Qe N8N Expression Testing

Checked
proffesor-for-testing·vlatest·productivity·MIT

Validates complex query expression logic against a test suite to ensure accurate data retrieval in backend systems.

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add proffesor-for-testing/agentic-qe --skill qe-n8n-expression-testing -a claude-code
  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

proffesor-for-testing

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned proffesor-for-testing/agentic-qe at 124d8c735e.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Scanned
1 file, 397 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill allows an AI agent to test n8n expressions for validity and potential errors. It can evaluate whether an expression will parse correctly, and potentially identify common mistakes before they cause issues in a workflow. The skill aims to improve the reliability of automated processes built with n8n.

When to use it

  • Workflow Development: Validate complex expressions during the creation or modification of n8n workflows.
  • Debugging Existing Workflows: Quickly check if an expression is causing errors without running the entire workflow.
  • Expression Library Maintenance: Ensure that expressions in a reusable library remain valid and functional over time.
  • Automated Testing: Integrate into automated testing pipelines to proactively identify issues with n8n workflows.

Key capabilities

  • Expression parsing validation
  • Error identification within expressions
  • Workflow reliability improvement

Example prompts

  • "Test this expression: {{$json.someValue + 1}}"
  • "Validate the following n8n expression for errors: moment(item.date).add(1, 'day').format('YYYY-MM-DD')"
  • "Can you check if this expression is valid: [[getItemFromList("users", {id: item.userId})]]"

Tips & gotchas

The skill's effectiveness depends on the complexity and accuracy of the provided n8n expressions. It’s best used in conjunction with thorough testing of complete workflows to ensure expected behavior.