n8n stress testing

CrashLabs

Break automation before production does. Mock-run n8n JSON and get a deploy gate.

Start a stress testCase gallery

Example report

Sample: invoice follow-up workflow

Deploy gate

Fail

Not production-ready yet

Spam burst x10 would send 10 customer emails. No duplicate guard on the Gmail send path. Stripe charge runs before human approval.

Risk

82/100

Nodes
14
Critical
2
High
3
Outbound
4

Real-world actions

What would leave the company

  • EmailSend overdue notice

    Gmail → customer · subject from invoice amount

  • PaymentCharge late fee

    Stripe · amount from overdue balance

  • SheetLog attempt

    Google Sheets · append row on each run

Stress scenarios

Mock runs. No live APIs.

  • Duplicate deliveryFAIL
  • Spam burst ×10FAIL
  • Null email fieldFAIL
  • Empty triggerPASS

What to fix

  • Criticalduplication

    No guard against duplicate webhook delivery

    A retried n8n trigger would email the customer again and may charge twice.

  • Highapproval

    Payment fires before human approval

    Move the Stripe node after the wait / approve step, or require confirmation.

Workflows look fine in the editor.Production is where they spam, double-charge, or go quiet.

If you ship n8n automations, this is a second opinion before go-live. No staging stack for every node type.

How it works

Four steps from export to gate

Upload, simulate, stress, decide. Same path every time.

  1. 01

    Export from n8n

    Download your workflow JSON. Leave credentials out. Crash Labs only needs the graph.

  2. 02

    Mock-run the graph

    We walk every connection with fake data. No real emails, Stripe charges, or APIs fire.

  3. 03

    Inject stress

    Duplicate delivery, spam x10, missing fields, empty triggers, and failures after the first side effect.

  4. 04

    Get a deploy gate

    PASS, WARN, or FAIL, plus outbound actions, findings, and a report you can share or print.

What you get

A report you can act on

Outbound inventory

What would leave your company: email, payments, Slack, sheets, HTTP.

Chaos scenarios

Which stress cases break the happy path before a customer does.

Fix guidance

Findings ranked by severity, with why it matters and what to change in n8n.

Ready

Run your first stress test

Upload JSON in under a minute. Sign in to save and share. New accounts get one free saved run.

Open the labView pricing

From $25 / run · about $60 / mo