Pretrained computer vision classifier

Identify cactus species with one API call.

A pretrained cactus species classifier that sorts an image into one of 10 categories — what species of cactus it is. Use the cactus species 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 cactus species classifier

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

What this cactus species classifier recognizes

A sample of the 26 labels this pretrained classifier chooses between.

Astrophytum Asterias
Barrel Cactus
Bunny Ears Cactus
Cactus Flower
Carnegiea Gigantea
Cholla
Christmas Cactus
Crested Cactus
Cylindropuntia
Echinocactus Grusonii

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 cactus species 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": "Astrophytum Asterias",
  "labelId": "label_...",
  "confidence": 0.92
}

Under the hood

Model type
Nyckel-trained

Trained on a Nyckel-curated dataset covering 10 cactus species 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 cactus species classification

Botanical Research Tool

This function can aid researchers and botanists in accurately identifying various cactus species during field studies. By automating the classification process, it allows scientists to focus on data analysis rather than manual identification, increasing efficiency in research projects.

Eco-Tourism Guide

Eco-tourism companies can leverage this image classification function to enhance their guided tours in regions known for diverse cactus species. By providing tourists with the ability to identify and learn about local cacti directly through an app, companies can enrich the visitor experience and promote conservation awareness.

Agricultural Monitoring

Cactus farmers can use the classifier to monitor and manage different cactus species in their cultivation areas. By accurately identifying species, farmers can better tailor care practices, track growth patterns, and optimize yield.

Educational Tools

Schools and universities can incorporate this tool into their biology curriculum. By allowing students to identify cactus species through images, it enhances learning materials and engages students in interactive botanical studies.

Conservation Efforts

Environmental organizations can utilize the image classification function to track the populations of various cactus species and assess their conservation status. By identifying species accurately, organizations can prioritize efforts and resources for species at risk of extinction.

Landscape Design Assistance

Landscape architects can use the cactus species identifier to select appropriate cactus species for landscaping projects. This tool enables professionals to create aesthetically pleasing and sustainable designs while considering the environmental requirements of each species.

E-Commerce Solutions

Online retailers specializing in cacti can implement this classification function to provide customers with better product categorization. By enabling users to identify different cactus types through images, retailers can enhance user experience and facilitate informed purchasing decisions.

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 cactus species 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 cactus species 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.