Copy/paste detector for source code. 220+ languages, Rust engine, SARIF/HTML/badge reporters, GitHub Action, MCP server for AI agents.
jscpd is a copy-paste detection tool that scans source code for duplicated blocks across 223 to 224 language formats, using the Rabin-Karp algorithm to identify clones. It ships in two variants: a TypeScript engine (v4) with 13 reporters, LevelDB store support, and a Node.js programming API, and a ground-up Rust rewrite (v5) that runs as a self-contained binary with no Node.js dependency, delivering 24 to 37 times faster detection on real codebases. The MCP server integration allows Claude Code and other MCP-compatible agents to invoke duplicate detection directly as a tool call during code review or refactoring tasks. An AI reporter outputs results in a token-efficient format roughly 79 percent leaner than standard console output, making it practical for LLM pipelines where context budgets matter. The v5 Rust engine also adds git blame with side-by-side author comparison via gitoxide, and parallel file tokenization controlled through a workers flag. Developers, CI pipelines, and AI coding agents working across large polyglot repositories are the primary audience.
- ✓Open-source license (MIT)
- ✓Actively maintained (<30d)
- ✓Clear description
- ✓Topics declared
- ✓Mature repo (>1y old)
git clone https://github.com/kucherenko/jscpd{
"mcpServers": {
"jscpd": {
"command": "jscpd"
}
}
}MCP Servers overview
What people ask about jscpd
What is kucherenko/jscpd?
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kucherenko/jscpd is mcp servers for the Claude AI ecosystem. Copy/paste detector for source code. 220+ languages, Rust engine, SARIF/HTML/badge reporters, GitHub Action, MCP server for AI agents. It has 6.2k GitHub stars and its last recorded update is dated 2026-09-12.
How do I install jscpd?
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You can install jscpd by cloning the repository (https://github.com/kucherenko/jscpd) or following the README instructions on GitHub. ClaudeWave also provides quick install blocks on this page.
Is kucherenko/jscpd safe to use?
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Our security agent has analyzed kucherenko/jscpd and assigned a Trust Score of 97/100 (tier: Verified). See the full breakdown of passed checks and flags on this page.
Who maintains kucherenko/jscpd?
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kucherenko/jscpd is maintained by kucherenko. The last recorded GitHub activity is dated 2026-09-12, with 45 open issues.
Are there alternatives to jscpd?
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Yes. On ClaudeWave you can browse similar mcp servers at /categories/mcp, sorted by popularity or recent activity.
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