Pretrained computer vision classifier
Identify how ripped someone is with one API call.
A pretrained how ripped someone is classifier that sorts an image into one of 6 categories — how ripped someone is. Use the how ripped someone is API immediately, no training required, then adapt it to your own data when you need more.
Try the how ripped someone is classifier
Drop in a photo and get the prediction back. No signup, no setup.
What this how ripped someone is classifier recognizes
A sample of the 6 labels this pretrained classifier chooses between.
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 how ripped someone is API
Get your own copy of this classifier behind your own endpoint — callable from any HTTP client:
curl -X POST "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{"data": "https://example.com/photo.jpg"}'import requests
response = requests.post(
"https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke",
headers={"Authorization": "Bearer YOUR_ACCESS_TOKEN"},
json={"data": "https://example.com/photo.jpg"},
)
print(response.json())const response = await fetch("https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke", {
method: "POST",
headers: {
"Authorization": "Bearer YOUR_ACCESS_TOKEN",
"Content-Type": "application/json",
},
body: JSON.stringify({ data: "https://example.com/photo.jpg" }),
});
console.log(await response.json());$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, '{"data": "https://example.com/photo.jpg"}');
$headers = array();
$headers[] = 'Authorization: Bearer YOUR_ACCESS_TOKEN';
$headers[] = 'Content-Type: application/json';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$result = curl_exec($ch);
curl_close($ch);
echo $result;Example response
{
"labelName": "Extremely Ripped",
"labelId": "label_...",
"confidence": 0.92
}Under the hood
Trained on a Nyckel-curated dataset covering 6 how ripped someone is categories, served on Nyckel's own infrastructure — your image stays on Nyckel.
Send an image URL or file to the invoke endpoint; the response is a label with a confidence score.
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.
Where teams use how ripped someone is classification
Personal Fitness Assessment
This function can be used by fitness trainers and gyms to assess clients’ physical fitness levels based on their muscular definition. By classifying how "ripped" an individual is, trainers can customize workout plans and nutritional advice to help clients achieve their fitness goals more effectively.
Virtual Fitness Challenges
Companies can implement this function in virtual fitness apps to create challenges that encourage users to achieve specific body transformation goals. By comparing images over time, participants can receive feedback on their progress, promoting engagement and motivation.
Fitness Influencer Marketing
Brands can leverage this technology to assess potential fitness influencers. By analyzing the image data of influencers, companies can match their product endorsements with those who exhibit high levels of physical definition, ensuring an authentic representation of their products.
Personalized Workout Programs
Health and fitness applications can utilize this function to recommend personalized training programs based on the user's muscle definition. By offering tailored routines aimed at enhancing muscle growth or fat loss, the application can improve user results and satisfaction.
Fitness Social Media Analytics
Social media platforms focused on fitness content can use this function to categorize user-generated content. By identifying how "ripped" individuals are, the platform can tailor content recommendations, promote relevant influencers, and enhance community engagement.
Market Research in Fitness Industry
Fitness brands can utilize this image classification function to analyze market trends. By assessing the physical appearance of competitors and target demographics, companies can adjust their marketing strategies, product offerings, and advertisements to better resonate with their audience.
Corporate Wellness Programs
Businesses promoting corporate wellness initiatives could integrate this function to assess employee engagement and fitness levels. By tracking changes in muscular definition over time, companies can measure the effectiveness of their wellness programs and incentivize healthy behaviors among employees.
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 how ripped someone is 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.
Related classifiers
Ready to classify how ripped someone is 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.