Malformed structure
Missing fields and invalid JSON stop at the boundary.
n8n AI output validator
Test structured output against required fields, action and target allowlists, and a confidence threshold. Invalid or uncertain output routes to human_review.
Live browser demo
Everything runs in this browser tab. The demo does not upload, store, or execute your candidate output.
{
"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
}This demo only returns a decision signal. A person controls what any later n8n step may do.
Move this same decision contract into n8n.
Import the tested n8n validator - $19Start smaller: get the reusable contract + checklist for $5What this catches
Missing fields and invalid JSON stop at the boundary.
Unknown actions or targets cannot silently continue.
Uncertain output routes to a person at your chosen threshold.
Move the same boundary into n8n
The $19 one-time package adds the ready-to-import webhook workflow, bounded retry path, contract tests, implementation course, and protected delivery.