M
API Matrix

CORE API

Science & Math / API Key Intermediate HTTPS
Varies by plan (check documentation)
72 Score
Grade B
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Overview

CORE provides access to millions of open-access research papers from repositories and journals worldwide. You can search, filter, and download full-text academic content programmatically using your API key. It is a powerful resource for researchers, students, and developers building academic tools.

💡

Beginner Tip

Use the search endpoint with a simple keyword query to get started, then explore the metadata fields like authors and DOI for richer integrations. Your API key must be included in every request as a Bearer token.

Available Data

CORE data via REST API
JSON-formatted response data
Requires API key authentication

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from CORE",
    "description": "Access the world's Open Access research papers",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

id Unique CORE identifier for the research paper.
title Title of the academic paper.
authors List of author objects with name and affiliation.
abstract Abstract or summary text of the paper.
doi Digital Object Identifier for the paper, if available.
downloadUrl URL to download the full-text PDF of the paper.

Implementation Example 

const url = "https://core.ac.uk/services";
// 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 API key is missing or has been sent incorrectly.
✓ Include your key in the Authorization header as "Bearer YOUR_API_KEY" or as the apiKey query parameter.
429 Too Many Requests You have exceeded the rate limit for your API tier.
✓ Add a delay between requests or request a higher-tier key from the CORE website.
Empty results The search query returned no matching open-access papers.
✓ Try broader keywords or use boolean operators like "machine AND learning" for more targeted searches.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 12/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Science & Math
Difficulty Intermediate
Verified: 2026-04-04

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