Codeforces

API

Free REST API for Codeforces programming contest data

Overview

The Codeforces API provides RESTful endpoints to retrieve contest data, user profiles, problem sets, submissions, and rating histories from the Codeforces platform. Key endpoints include /user.info (user details), /contest.standings (rankings), /problemset.problems (problem listings), and /user.status (submission history). Responses are in JSON format. Use cases include building contest trackers, analyzing user performance, creating problem recommendation tools, or integrating Codeforces data into coding learning platforms. Authenticated requests support private user data access.

Example Integration (JavaScript)

script.js JS


fetch('https://codeforces.com/apiHelp')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful architecture
JSON response format
Public endpoints (no API key for basic data)
Authenticated access for private data
Covers contests, users, problems, submissions

Frequently Asked Questions

? Is the Codeforces API free to use?

Yes, the Codeforces API is completely free for personal and non-commercial use with no hidden costs.

? Does it require an API Key?

Public endpoints (e.g., user info, contest standings) don’t need an API key. Authenticated endpoints (private data like own submissions) require a key from your Codeforces account settings.

? What is the response format?

All responses are in JSON format, which is easy to parse and integrate into applications.

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Tool Info

Pricing Free

Category Programming

Platform Public API

Pros

⊕ Free to use
⊕ Comprehensive data coverage
⊕ Well-documented
⊕ Stable and reliable
⊕ Supports both public and private data

Cons

⊖ Rate-limited (1 request/sec for unauthenticated users)
⊖ No official SLA
⊖ Limited to Codeforces platform data only