Roboflow Universe API

Machine Learning / API Key Intermediate HTTPS CORS
Varies by plan (check documentation)

Overview

Roboflow Universe gives you access to thousands of pre-trained computer vision models and datasets through a simple REST API. You can use it to run object detection, image classification, and segmentation on your own images without training a model from scratch. It is ideal for beginners who want to add AI vision capabilities to their apps quickly.

💡

Beginner Tip

Start by browsing Roboflow Universe at universe.roboflow.com to find a model trained on your target objects — using a pre-trained model saves days of work. Always send images as base64-encoded strings or URLs, and check the model version number in your API calls.

Available Data

Roboflow Universe data via REST API
JSON-formatted response data
Requires API key authentication

Example Response

JSON Response
{
  "route": "Line 1",
  "origin": "Station A",
  "destination": "Station B",
  "departure": "08:30",
  "arrival": "09:15",
  "status": "On Time",
  "delays_min": 0
}

Field Reference

predictions List of detected objects, each with class label and bounding box.
predictions[].class The label of the detected object (e.g., cat, car).
predictions[].confidence Detection confidence score from 0 to 1; higher means more certain.
predictions[].x X-coordinate of the bounding box center in pixels.
predictions[].y Y-coordinate of the bounding box center in pixels.
predictions[].width Width of the bounding box in pixels.

Implementation Example

const url = "https://universe.roboflow.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized Missing or invalid API key in the request.
Include your Roboflow API key as the api_key query parameter.
Model not found Incorrect model name or version number in the URL.
Copy the exact model endpoint URL from your Roboflow Universe project page.
Image too large Uploaded image exceeds the size limit.
Resize images to 640×640 pixels or smaller before sending for faster and more reliable inference.

Matrix Score Breakdown

🌐 Reachability 0/30
⚡ Speed 15/20
🔒 Security 15/15
🛠 Developer XP 17/20
✓ Reliability 0/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS YES
Category Machine Learning
Difficulty Intermediate
Verified: 2026-04-04

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