online-judge-tools/oj
Tools for various online judges. Downloading sample cases, generating additional test cases, testing your code, and submitting it. observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3527
- days_rel: n/a
- days_push: 852
- n_releases_24m: 0
Adoption not part of the score
1169 stars · 111 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A command-line tool that automates solving problems on online judges like AtCoder, Codeforces, and HackerRank. It downloads sample and system test cases, logs in, tests your code, generates test inputs/outputs, and submits solutions.
Use cases
- download sample test cases from atcoder or codeforces
- test my competitive programming solution against sample cases
- automatically submit code to an online judge from the terminal
- generate additional test inputs for stress testing
- scrape problem statements and test data from online judges
- run reactive problem testing locally
When to choose
- you solve competitive programming problems and want to automate the download-test-submit loop
- you need stress testing with generated inputs against a reference implementation
- you work across multiple judges (AtCoder, Codeforces, HackerRank) from one CLI
When to avoid
- you need a GUI or IDE-integrated judge client
- you want to bypass judge rate limits or terms of service with heavy scraping
- you need a general-purpose web scraping framework
Facets
cli-tool · maturity active
cli web-scraping testing workflow-automation developer-tools developer-tools crawlers cli python cross-platform competitive-programming online-judge atcoder codeforces sample-cases test-generation code-submission command-line automation
1 source
- readme: https://github.com/online-judge-tools/oj · fetched 2026-08-28 · e045fc88bf19
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| online-judge-tools/oj | main | 23 |
For agents
markdown · JSON · MCP: product_card(name="online-judge-tools/oj")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem