Show HN: Usermods, an extension that runs an a coding agent to build userscripts

Category: devtools

Tags: browser-extension, userscript, llm-agent, code-generation, tampermonkey

Score: 7.5/10 (Innovation: 7, Technical: 8, Documentation: 9, Utility: 6)

Usermods is a browser extension that uses an LLM coding agent to generate and live-test userscripts directly from a side-panel chat interface. It supports multiple LLM backends, includes built-in page inspection tools, Tampermonkey compatibility, and Safari builds, making userscript creation more accessible and iterative.

Target audience: power users, web developers, userscript authors

Repository: https://github.com/kballenegger/usermods · TypeScript · MIT · 3 stars

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