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Production-ready selector healing

Stop broken selectors
from killing your automations

Websites change their markup constantly. When a CSS selector breaks, your entire scraping pipeline or automation stops working. Heal detects the break and finds the new selector automatically — in milliseconds.

Start free — no card neededSee pricing

Free plan includes 50 elements and 100 heals/month

The problem

Every automation that touches a website depends on CSS selectors.

73%

of web scrapers break within 30 days

4h+

average time to debug a broken selector

$0

revenue while your automation is down

How Heal works

Three steps. One API call. Zero downtime.

1

Tag your elements

Use our Chrome extension or API to register elements. We store 7 fallback selectors per element automatically — ID, test-id, ARIA, href, class, nth-child, and text.

2

Detect the break

Call /api/v1/heal/check with the current HTML. Nodium tells you instantly if the selector still matches — and can auto-heal if it doesn't.

3

Heal automatically

Our 3-tier healing engine tries cascade fallback, then weighted heuristic matching, then AI vision — returning the best new selector with a confidence score.

3-tier healing engine

Speed first, accuracy always. Each tier is more powerful but slower.

Tier 0

Cascade fallback

< 5ms

Tests 7 stored selector strategies in priority order. If the ID selector breaks, we try data-testid, then ARIA label, then unique class, and so on. Most heals resolve here.

Confidence: 92–97%

Tier 1

Heuristic matching

< 50ms

Scores every element in the DOM against 8 weighted factors: stable attributes, text content, CSS classes, parent chain, tag name, and href. Finds elements even after major redesigns.

Confidence: 65–90%

Tier 2

AI Vision

< 3s

Sends a screenshot of the original element and the current HTML to GPT-4V. The AI visually identifies the matching element and returns a new selector with reasoning.

Confidence: 70–95%

Built for automation tools

Drop Heal into any workflow that makes HTTP requests.

n8n

Add an HTTP Request node pointing to /api/v1/heal with your API key. Chain it after your scraping node and before your data processing — if the selector broke, Heal returns the fixed one.

Make (Integromat)

Use the HTTP module to call the check endpoint with autoHeal: true. One request validates and fixes your selector. Route the response to continue your scenario.

Typical workflow

Fetch page HTML→POST /api/v1/heal/check→Use healed selector→Extract data

Everything you need to keep selectors alive

7-strategy cascade

Every element is stored with 7 different selector strategies. If one breaks, the cascade tries the next.

Batch healing

Heal up to 50 selectors in a single API call. Perfect for large scraping jobs with dozens of tracked elements.

Webhooks

Get notified instantly when a selector breaks or gets healed. Supports heal.success and heal.failed events with HMAC signing.

Confidence scores

Every heal result includes a confidence score (0–1). Set your own threshold to auto-accept or flag for review.

PII anonymization

Configure regex rules to redact sensitive data from element names and text before storage. GDPR-friendly by default.

Full audit trail

Every heal attempt is logged — old selector, new selector, method used, confidence, latency, and AI reasoning when applicable.

Dead-simple API

One endpoint. One header. JSON in, JSON out.

POST /api/v1/heal
curl -X POST https://app.nodium.io/api/v1/heal \
  -H "X-API-Key: ndm_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "elementId": "uuid-of-tracked-element",
    "currentHtml": "<div>...current page HTML...</div>"
  }'
Response
{
  "success": true,
  "newSelector": "#checkout-btn",
  "confidence": 0.97,
  "method": "cascade",
  "latencyMs": 3
}
Read the full API docs

Who uses Heal

Web scraping teams

Stop wasting hours debugging broken selectors. Register your target elements once, and Heal keeps them working even when the site redesigns.

No-code automation builders

n8n, Make, Zapier users who scrape data from websites. Heal fits as an HTTP step in your workflow — no code changes needed.

QA & testing teams

E2E tests break when selectors change. Use Heal to auto-update test selectors and reduce flaky test maintenance.

Monitoring & alerting

Track price changes, stock availability, or content updates on third-party sites. Heal keeps your monitors running.

Start healing broken selectors today

Free plan. No credit card. Set up in 2 minutes.

Get started freeRead the docs