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    n8n Workflow QA Linter

    n8n Workflow QA Linter

    by JustHandled Labs

    Lint an exported n8n workflow before it ships: catches broken or duplicated nodes, missing error handlers, credential stubs, unhandled retries, unsafe webhooks, brittle expressions, and missing idempotency. A read-only pass over your workflow JSON that ranks production-readiness gaps with evidence and concrete fixes.

    Updated Jun 2026
    Security scanned
    Works with Claude Code

    $19

    · or 95 credits

    30-day refund guarantee

    Secure checkout via Stripe

    Included in download

    • Identify missing error-handling nodes in complex automations
    • Detect security vulnerabilities in public webhook triggers
    • terminal, file_read automation included
    • Ready for Works with Claude Code
    • Instant install

    Sample input

    Review this exported n8n workflow JSON for production-readiness and potential failures.

    Sample output

    Audit Summary

    • Critical: Missing error handler on 'PostgreSQL' node.
    • High: Webhook node lacks 'Authentication' header requirement.
    • Medium: Expression in node 'Format Data' lacks null-checks.

    Remediation: Use the following Error Trigger structure for the DB node...

    About This Skill

    Automated Production-Ready n8n Audits

    Ship automations with confidence using a specialized linter designed for n8n workflow exports. This skill moves beyond simple formatting checks, performing a deep heuristic analysis of your workflow JSON to identify production risks, brittle logic, and security vulnerabilities before they cause downtime.

    What it does

    The linter scans your exported n8n workflows for critical patterns that lead to failure. It evaluates node stability, error handling coverage, webhook security, and expression reliability. It uses a combination of a heuristic scanner and a detailed manual review checklist to provide a comprehensive health score for your automations.

    • Error Handling: Detects missing On-Error nodes and unhandled retry logic.
    • Security: Identifies unsafe webhook configurations and exposed credential stubs.
    • Reliability: Flags brittle expressions, non-idempotent nodes, and duplicated logic.
    • Best Practices: Reviews node naming conventions and documentation gaps.

    Why use this skill?

    Prompting an AI with a raw n8n JSON file often leads to missed edge cases or halluncinated node behaviors. This skill utilizes a built-in heuristic scanner and a structured audit framework to ensure 100% of your workflow is analyzed against industry standards. It doesn't just find problems—it provides safe remediation snippets and a ranked list of findings by severity, from critical blocks to low-priority info items.

    Output Format

    You receive a professional audit report including a scoped list of inspected nodes, confirmed findings with evidence-backed impact statements, remediation code snippets, and specific manual review items for team handoff.

    Use Cases

    • Identify missing error-handling nodes in complex automations
    • Detect security vulnerabilities in public webhook triggers
    • Validate expressions for null-safety and execution reliability
    • Standardize node naming and documentation for team handoffs

    Reviews

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    Security Scanned

    Passed automated security review

    Permissions

    Terminal / Shell
    Read Files

    File Scopes

    n8n-workflow-qa-linter/**
    **/*.json

    Read-only inspection first. The bundled scanner reads matching JSON and prints markdown or JSON findings. It installs nothing, transmits nothing, and modifies nothing. Any write, install, deploy, or live-account action requires explicit user confirmation.

    Works with Claude Code, Codex CLI, Cursor, OpenCode/OpenClaw, Gemini CLI, and other agents that load SKILL.md folders. The bundled scanner uses the Python 3 standard library only and degrades to manual checklist mode when Python or matching files are unavailable.

    Creator

    JustHandled Labs creates focused agent skills and workflow packs for Claude, Codex, Cursor, and AI-assisted builders. Each tool is designed around a real repeatable task: cleaner commits, better PRs, stronger handoffs, safer repo hygiene, clearer documentation, and less copy-paste chaos. The goal is not generic AI productivity. The goal is specific workflows that are easier to run, review, and repeat. Maintained by H.J. Westerfield, with a background in communications, editing, project coordination, customer support, and practical AI systems. JustHandled Labs builds tools for people who want useful automation without theatrical complexity.

    Frequently Asked Questions

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