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Vehicle Data Certificate API

Validate Vehicle Data in a Snap

AI-powered API that cleans messy supplier data and issues a verifiable Vehicle Data Certificate.

Perfect if you run your own marketplace, auction or fleet platform – or use our franchise / white-label solutions and want clean, standardised data under the hood.

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Why choose the Vehicle Data Certificate API?

One request in, clean & standardised vehicle data out – plus a certificate you can show to end buyers.

Instant validation

Sub-second JSON responses with confidence scores and human-readable comments.

Plug-and-play integration

REST endpoints, webhooks, and SDKs for PHP, Python, Node.js & more.

AI-driven accuracy

LLM core + curated mappings and cache for high accuracy and predictable costs.

How CarGenius works

1 · Send raw data

POST a supplier payload — brand, model, VIN, fuel, gearbox, power… any format.

2 · AI validation

The engine normalises, cross-checks, assigns confidence & stores a cache key in <0.5 s.

3 · Clean JSON & certificate

Get structured JSON ready for your DB – and a shareable Vehicle Data Certificate URL.

CarGenius API – at a glance

Clean vehicle data in one request.

  • Auth: ?key=YOUR_API_KEY
  • Base URL: https://api.cargenius.info
  • Latency: < 500 ms (p95)
  • Cache hit ratio: up to 80% identical payloads
Main methods
  • POST /validate – single vehicle payload
  • POST /validateBulk – up to 20 vehicles
Request full API docs

Need a full auction platform or franchise model instead? See our business opportunities.

# Validate a single vehicle description
curl -X POST https://api.cargenius.info/validate \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "brand_original": "FORD",
    "model_original": "Focus 1.0 EcoBoost",
    "fuel_original":  "bleifrei",
    "gearbox_original": "Manual",
    "power_kw": "74",
    "cylinder_volume": "999"
  }'
{
  "brand": "Ford",
  "model": "Focus",
  "fuel": "Petrol",
  "gearbox": "Manual",
  "power_kw": "74",
  "cylinder_volume": "999",
  "confidence": 93,
  "comment": "EcoBoost 1.0 – petrol."
}

Trusted Vehicle Data Certificate

Each successful validation can be turned into a shareable digital certificate – ideal for classifieds, inspections and remarketing portals.

CarGenius certificate mock-up
  • Unique, tamper-evident URL – no sign-in required.
  • Generated in <0.5 s alongside the JSON response.
  • Printable PDF & embeddable SVG badge.
  • Multi-language (EN, DE, FR, IT, ES, PL, RU, LT).
  • Plug-in badge for dealer websites – one click opens the cert.
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Where CarGenius shines

Plug the validator into any automotive workflow.

Classified marketplaces

Normalise supplier feeds before publishing listings; remove “Diesel / Electric” mix-ups and missing kW.

Fleet remarketing

Clean end-of-lease vehicle data in bulk, push straight to auction platforms and export reports.

Pricing & valuation engines

Feed ML models with consistent attributes and accurate engine specs for better residual-value forecasts.

Vehicle-history services

Cross-check seller claims, flag suspicious VIN/spec mismatches, enrich reports automatically.

Insurance underwriting

Speed up quote generation by validating technical details in milliseconds with confidence thresholds.

ESG & emissions reporting

Ensure correct fuel-type tagging (Petrol, Diesel, BEV, PHEV, MHEV) for precise carbon-footprint dashboards.

Simple, transparent pricing

Pay only for successful validations. Cancel or upgrade anytime.

Starter

€199/mo

  • 20 000 validations / month
  • Email support (24 h)
  • Basic analytics dashboard
Talk to our team
Pro

€699/mo

  • 100 000 validations / month
  • Priority email & Slack support
  • Webhooks & bulk endpoint
  • Advanced usage analytics
Talk to our team
Enterprise

Custom

  • High or unlimited volume
  • Dedicated CSM & SLA 99.9%
  • On-premise or EU cloud
  • Quarterly quality report
  • Early access to new features
Talk to our team

All plans include cache optimisation and burst limits suitable for most marketplaces.
Need higher throughput or custom SLAs? Let us know.

Customers who trust CarGenius

A few words from the data-driven teams we power.

“Our marketplace ingests feeds from 18 different partners — CarGenius cut data-cleaning time from hours to seconds and slashed listing errors by 94%.”

Lisa Meyer
CTO, AutoBlueList Europe

“We feed 50k lease returns per month into our pricing engine — the validator guarantees consistent fuel & drivetrain tags, which means better residual-value forecasts.”

Marco Di Santo
Head of Data, FleetVal

“Switching to CarGenius saved us over €15k/month in manual QC costs and eliminated ‘Diesel / Electric’ mislabels completely.”

Éva Kovács
Operations Lead, GreenBid

Frequently asked questions

Independent audits show a high match rate across brand, model, fuel, gearbox, power kW and cylinder cc. Every response ships with a confidence score so you can auto-accept or flag low scores.

Right now we focus on text-based descriptions from suppliers. VIN decoding is on our roadmap — contact us to join the beta list.

Median response time is typically below 400 ms. Most calls complete under 500 ms, including cache look-ups.

Yes — use POST /validateBulk to send up to 20 vehicles per call. Larger batch endpoints are available on Enterprise setups.

Yes. Every new account can start with a limited free tier to test accuracy and integration. Just talk to our team and we’ll set it up.

It’s included — certificate generation is part of every successful validation on all plans.

Ready to clean up your vehicle data?

Tell us about your data sources and volumes – we’ll suggest the best setup and pricing.

Talk to our team