--- title: Using jscpd and Mago to fix AI generated code... description: AI coding agents often produce bloated code full of copy-pasted logic across controllers and models, creating maintenance headaches. The piece describes using... canonical: https://daily.dev/posts/using-jscpd-and-mago-to-fix-ai-generated-code-duplication-in-php-pmwfukgij twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Using jscpd and Mago to fix AI generated code duplication in PHP | daily.dev og:description: AI coding agents often produce bloated code full of copy-pasted logic across controllers and models, creating maintenance headaches. The piece describes using... og:url: https://daily.dev/posts/using-jscpd-and-mago-to-fix-ai-generated-code-duplication-in-php-pmwfukgij og:image: https://api.daily.dev/og/posts/pMwFUKGij.png og:image:alt: Using jscpd and Mago to fix AI generated code duplication in PHP og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Using jscpd and Mago to fix AI generated code duplication in PHP **[PHP Architect](https://daily.dev/sources/phparchitect)** · [@shocm](https://daily.dev/shocm) · 1 min read · 0 upvotes · 0 comments ## Summary AI coding agents often produce bloated code full of copy-pasted logic across controllers and models, creating maintenance headaches. The piece describes using jscpd (a copy-paste detection tool) alongside Mago (a PHP tooling/linting tool) to have the AI agent detect and refactor its own duplicated code, turning code review from a chore into a feedback loop the agent can act on. ## Content Video version: https://youtu.be/ubhVleOpLQ0 It’s so easy to ask an AI agent to build a feature, and have it hand you 5,000 lines of code. It might even feel like a win until you start reading it so see the same validation block in four controllers, the same database-fetch boilerplate in six models, and that efvery method wraps its logic in the same try/catch with the same log message. It “works,” but you now own a maintenance nightmare, and reviewing it drains the life out of your afternoon. LLMs are great at turning two sentences into thousands of lines of code, but that doesn’t mean it’s ... https://www.phparch.com/2026/08/i-made-my-ai-agent-fix-its-own-copy-paste-jscpd-mago/ ## Similar posts on daily.dev - [Your Coding Agent Keeps Making the Same Mistakes. I Built a Fix](https://daily.dev/posts/your-coding-agent-keeps-making-the-same-mistakes-i-built-a-fix-6z2qgmuib) · Adventures in Nodeland · 0 upvotes · 0 comments - [I Created a Code Graph of Magento 2 for AI Agents](https://daily.dev/posts/i-created-a-code-graph-of-magento-2-for-ai-agents-3jitcrppy) · Shaaf · 0 upvotes · 0 comments - [I'm Building Agents That Run While I Sleep](https://daily.dev/posts/i-m-building-agents-that-run-while-i-sleep-psrvg5tk0) · Hacker News · 2 upvotes · 0 comments --- Tags: [#php](https://daily.dev/tags/php), [#vibe-coding](https://daily.dev/tags/vibe-coding) [View this post on daily.dev](https://daily.dev/posts/using-jscpd-and-mago-to-fix-ai-generated-code-duplication-in-php-pmwfukgij) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/using-jscpd-and-mago-to-fix-ai-generated-code-duplication-in-php-pmwfukgij","headline":"Using jscpd and Mago to fix AI generated code duplication in PHP","text":"AI coding agents often produce bloated code full of copy-pasted logic across controllers and models, creating maintenance headaches. 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