Pretrained computer vision classifier

Identify roof condition with one API call.

A pretrained roof condition classifier that sorts an image into one of 10 categories — the condition of the roof.. Use the roof condition 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 roof condition classifier

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

What this roof condition classifier recognizes

A sample of the 10 labels this pretrained classifier chooses between.

Damaged
Fair
Good
Leaking
Like New
Needs Repair
New
Poor
Very Poor
Worn

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 roof condition 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": "Damaged",
  "labelId": "label_...",
  "confidence": 0.92
}

Under the hood

Model type
Nyckel-trained

Trained on a Nyckel-curated dataset covering 10 roof condition 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 roof condition classification

Roof Inspection for Real Estate

This function can be used by real estate agents to quickly assess the condition of a roof during property evaluations. By classifying the roof's condition based on images, agents can provide potential buyers with accurate information about necessary repairs, thereby helping in negotiations.

Insurance Assessment

Insurance companies can employ the roof condition identifier to evaluate claims related to storm damage. By analyzing images submitted by policyholders, insurers can efficiently determine the validity of claims and expedite the underwriting process.

Maintenance Scheduling for Property Managers

Property managers can leverage this tool to schedule timely maintenance for residential or commercial properties. By regularly assessing roof conditions, they can preempt costly repairs and ensure tenant satisfaction with workplace or living conditions.

Construction Quality Control

Construction firms can use this function for quality assurance checks on newly installed roofs. By validating the roof’s condition against project specifications, they can ensure compliance with safety standards and prevent future liabilities.

Disaster Recovery Planning

Municipalities and emergency responders can use the roof condition identifier to assess damage after natural disasters. Quickly obtaining roof condition data allows for prioritized resource allocation and more efficient disaster recovery efforts.

Solar Panel Installation Feasibility

Solar energy companies can utilize the roof condition classification to determine the suitability of roofs for solar panel installations. By ensuring roofs are in good condition, these companies can avoid potential liabilities and guarantee the longevity of their installations.

Environmental Impact Assessments

Environmental consultants can apply this function to assess the condition of roofs in areas vulnerable to erosion and other environmental factors. The findings can inform sustainability reports and contribute to efforts aimed at promoting greener building practices.

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 roof condition 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 roof condition 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.