kucherenko/jscpd
Copy/paste detector for source code. 220+ languages, Rust engine, SARIF/HTML/badge reporters, GitHub Action, MCP server for AI agents.
6.4k stars · 269 forks · Rust
Caution
Caution: one person wrote most of the recent commits.
Why
- One person wrote 97% of human commits in the last year, so the project depends on them continuing. (source 1, source 2)
- Star growth includes 6 unexplained bursts, about 1,158 stars above the usual rate (18 % of all stars). Anyone can buy stars for any repo. (source 1)
What would change this
- A second person takes a substantial share of commits.
- A new star analysis that no longer finds unexplained bursts.
- Partly checked: maintenance (Commit counts are estimated: the commit sample stops before the window start, so GitHub's totals were scaled by the sampled bot share.; Authors in the last 90 days are counted from the sampled commits only.; Only 2 recent issues can be checked for a response, too few to measure response time.)
Maintenance
PartialActive
- Human commits, 30 days
- 333
- Human commits, 90 days
- 630
- Human commits, 365 days
- 1.1k
- Bot share of commits, 365 days
- 5%
- Last commit
- Oct 14, 2026 (16 hours ago)
- Last human commit
- Oct 14, 2026 (16 hours ago)
- Authors, 90 days
- 11
- Last release
- Oct 9, 2026 (5 days ago)
- Median PR merge time
- 3 hours
Responsiveness: of 2 recent issues, n/a got a maintainer reply. Median first response: n/a.
- Commit counts are estimated: the commit sample stops before the window start, so GitHub's totals were scaled by the sampled bot share.
- Authors in the last 90 days are counted from the sampled commits only.
- Only 2 recent issues can be checked for a response, too few to measure response time.
Sources: Commits, Releases, Merged pull requests, Issues
People
Complete- Owner
- Personal account
- Commits sampled
- 474 since Oct 14, 2025
- Authors for half of commits
- 1
- Authors for 80% of commits
- 1
- Contributors
- 69
Top committers
- kucherenko: 97% of commits
- MysterionRise: 1% of commits
- mnahkies: 0% of commits
- 7487: 0% of commits
- Dev-next-gen: 0% of commits
- Shares come from the newest sampled commits, since the commit sample is capped.
Sources: Commits, Contributors
Stars
CompleteUnexplained bursts, confidence high
Bursts
- Apr 25, 2015 to Apr 28, 2015: about 34 more stars than usual, peak 13 in one day, a shape we can't classify. No outside explanation found, so this burst is unexplained.
- Mar 11, 2018 to Mar 11, 2018: about 42 more stars than usual, peak 43 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- May 9, 2019 to May 11, 2019: about 52 more stars than usual, peak 26 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- Jul 31, 2019 to Aug 1, 2019: about 35 more stars than usual, peak 28 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- Oct 27, 2021 to Oct 28, 2021: about 28 more stars than usual, peak 24 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- Jan 27, 2024 to Feb 1, 2024: about 967 more stars than usual, peak 494 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- The star history was reset at some point, so earlier stars aren't counted.
- 2 stars GitHub has since removed (tracked since Oct 14, 2026).
Anyone can buy stars for any repo; bursts alone don't prove the owner did.
- Unexplained bursts: stars arrived with no matching forks, issues, releases, or launch coverage.
- Anyone can buy stars for any repo, so this describes the star history only.
- The star history has a zero run of 26 weeks or more, so the analysis starts after it.
Sources: How star history is analyzed
Risk
CompleteFlags
No risk flags.
License
- Now
- MIT (OSI-approved)
- A year ago
- MIT (OSI-approved)
Packages
No published packages found.
OpenSSF Scorecard: 7.4 out of 10 (via deps.dev).
Sources: GitHub: kucherenko/jscpd
Badge
Add this to a README to show the current verdict:
[](https://reporadar.ai/kucherenko/jscpd)Earlier verdicts
- Oct 14, 2026: Caution
- Oct 14, 2026: Caution
Computed 7 hours ago · method 2026.10.2