Pretrained computer vision classifier

Identify spark plug wear with one API call.

A pretrained spark plug wear classifier that sorts an image into one of 10 categories — the level of wear on spark plugs. Use the spark plug wear API immediately, no training required, then adapt it to your own data when you need more.

Pretrained · Nyckel-trained 10 labels out of the box Image input

Try the spark plug wear classifier

Drop in a photo and get the prediction back. No signup, no setup.

What this spark plug wear classifier recognizes

A sample of the 12 labels this pretrained classifier chooses between.

Carbon Buildup
Contaminated
Corroded
Cracked
Damaged
Failed
Good
Mild Wear
Normal Condition
Rusted

Need a label that isn't here? Clone the classifier into your Nyckel console and edit the label set to fit your data.

Call the spark plug wear API

Once you've added this classifier to your console, you get your own copy of it behind your own endpoint. Invoke it with any HTTP client:

curl

curl -X POST "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke" \
  -H "Authorization: Bearer $NYCKEL_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"data": "https://example.com/photo.jpg"}'

Python

import requests

# Get an access token: https://www.nyckel.com/docs/api/overview/authentication/
token = "YOUR_ACCESS_TOKEN"

response = requests.post(
    "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke",
    headers={"Authorization": "Bearer " + token},
    json={"data": "https://example.com/photo.jpg"},
)
print(response.json())

Example response

{
  "labelName": "Carbon Buildup",
  "labelId": "label_...",
  "confidence": 0.92
}

Under the hood

Model type
Nyckel-trained

Trained on a Nyckel-curated dataset covering 10 spark plug wear categories, served on Nyckel's own infrastructure — your image stays on Nyckel.

Input
Image

Send an image URL or file to the invoke endpoint; the response is a label with a confidence score.

Make it yours
Adaptable

Clone it, then correct predictions and add your own samples in the console — Nyckel retrains automatically, turning this into a custom model tuned to your data.

More than a demo: this page is one of thousands of pretrained functions on Nyckel, an ML classification platform. You can invoke classifiers by API, review predictions, correct labels, collect samples from production traffic, and promote any pretrained function to a private custom model — without changing your integration.

Where teams use spark plug wear classification

Automotive Maintenance Scheduling

Use the spark plug wear identifier to automatically assess the condition of spark plugs in vehicles. This will enable automotive service centers to proactively schedule maintenance, reducing unexpected breakdowns and enhancing customer satisfaction.

Quality Control in Manufacturing

Implement the classification function in spark plug production lines to monitor product quality. By identifying worn or defective spark plugs before they reach the market, manufacturers can reduce returns and warranty claims while ensuring higher product reliability.

Fleet Management Optimization

Fleet managers can utilize the spark plug wear identifier to monitor the health of the vehicles in their fleet. This can lead to more effective inventory management for spare parts and optimize maintenance costs by replacing spark plugs only when necessary.

Diagnostics Tool for Mechanics

Equip automotive technicians with a mobile application powered by the classification function to diagnose spark plug condition. This will expedite the repair process as technicians can provide accurate, data-driven recommendations to customers, improving service reliability.

Consumer Education and Engagement

Car manufacturers can provide an app that lets users check the health of their spark plugs using the identifier. This promotes proactive vehicle maintenance awareness among consumers, ultimately leading to better vehicle performance and longevity.

Personalized Vehicle Performance Reports

Integrate the spark plug wear identifier into vehicle telematics systems to generate personalized performance reports for car owners. These reports can include insights on spark plug condition along with tailored maintenance recommendations based on driving habits.

Insurance Risk Assessment

Insurance companies can leverage the spark plug wear data to assess risk factors for vehicles they insure. By understanding the maintenance status and likely performance based on spark plug wear, insurers can adjust premiums accordingly, promoting preventative maintenance among policyholders.

Common questions

What's the difference between a zero-shot and a Nyckel-trained classifier?

A zero-shot classifier uses a large foundation model's general knowledge to pick between your labels — no task-specific training, so new or edited labels work immediately. A Nyckel-trained classifier has been trained on labeled examples and runs on Nyckel's own infrastructure, which typically makes it faster, cheaper per call, and more accurate on data that resembles its training set. The "Under the hood" section on this page shows which kind this classifier is, and any classifier can be adapted into a trained one by adding your own examples.

How do I know whether this will work for my application?

Honestly: we can't know in advance — it depends on your data stream and how closely it resembles what this classifier has seen. The reliable way to find out is to measure it on your own data: start invoking the classifier with real traffic, or upload and annotate a set of images in the console — make sure they look like your production data, not idealized examples. Nyckel's evaluation metrics then show you exactly how it performs on that data before you rely on it.

What happens when it makes a mistake?

No classifier is perfect, so Nyckel is built around the correction loop: invokes can be captured for review, you confirm or correct predictions in the console, and corrections become training data. Over time the model adapts to your data distribution — accuracy on your traffic improves with use rather than staying fixed.

Do I need training data to get started?

No. This spark plug wear classifier works out of the box — clone it into your console and you'll have your own API endpoint in under a minute. Training data only enters the picture when you want to adapt it: your corrected predictions and uploaded samples improve the model, and you can also edit the label set to match your needs.

What does it cost to try?

Trying the classifier on this page is free with no signup. Cloning it requires a free account, and the free tier covers your first API calls each month — see nyckel.com/pricing for current limits and paid tiers.

Ready to classify spark plug wear at scale?

Add this pretrained classifier to your Nyckel console — you'll get a live API endpoint in under a minute, and a path to a custom model when you need one.