Free tool - no signup - browser only

n8n AI output validator

See if an AI decision is safe to continue.

Test structured output against required fields, action and target allowlists, and a confidence threshold. Invalid or uncertain output routes to human_review.

Runs in your browserNo upload or storageZero external actions
Open the validator

Live browser demo

Test a structured AI decision now.

Everything runs in this browser tab. The demo does not upload, store, or execute your candidate output.

Decision routecontinue
{
  "accepted": true,
  "route": "continue",
  "issues": [],
  "normalized_output": {
    "action": "route_lead",
    "confidence": 0.92,
    "target": "sales",
    "reason": "High-intent pricing request"
  },
  "policy": {
    "allowed_actions": [
      "route_lead",
      "draft_email",
      "summarize",
      "human_review"
    ],
    "allowed_targets": [
      "sales",
      "support",
      "ops",
      "none"
    ],
    "minimum_confidence": 0.8
  },
  "external_action_executed": false
}
No action executed.

This demo only returns a decision signal. A person controls what any later n8n step may do.

Get the tested workflow - $9.50 launch

What this catches

A valid-looking answer can still violate policy.

01

Malformed structure

Missing fields and invalid JSON stop at the boundary.

02

Disallowed decisions

Unknown actions or targets cannot silently continue.

03

Low confidence

Uncertain output routes to a person at your chosen threshold.

Move the same boundary into n8n

Get the tested, importable workflow.

Launch pricing is $9.50 for the first 10 customers with the prefilled FIRST10 code. The regular $19 version adds the ready-to-import webhook workflow, bounded retry path, contract tests, and protected delivery.

Open the $9.50 launch checkout