{"slug": "show-hn-usermods-an-extension-that-runs-an-a-coding-agent-to-build-userscripts", "title": "Show HN: Usermods, an extension that runs an a coding agent to build userscripts", "summary": "A developer released Usermods, a browser extension for Chrome, Safari, and iOS that embeds a coding agent in the sidebar to generate and run userscripts that modify websites live. Usermods reads the page's DOM, element queries, computed styles, and screenshots, writes the script, tests it on the live page, and persists the changes, supporting API keys from Anthropic, OpenAI, xAI, OpenRouter, any OpenAI-compatible endpoint, local models, or ChatGPT and SuperGrok subscription sign-in. The Show HN post drew 1 point and 0 comments.", "body_md": "I built Usermods to make it easy to fix or improve any site on the fly. Remove any user-unfriendly annoyances, get past modal signup screens, or access some sites that otherwise require signup to view content they leave open to be indexed. Or, restyle a site to not look like it’s from last century.\n\nUsermods is a browser extension from Chrome, Safari, and iOS that puts a coding agent in your sidebar. Chat with it like you would with Claude and it live automates or edits the site, and saves it as a userscript. You can share mods with anyone, or edit others’ mods with just a chat. It reads the actual page (DOM, element queries, computed styles, a screenshot if it needs one), writes the script, runs it on the live page to check it works, and persists the changes forever.\n\nWorks with any model: an API key (Anthropic, OpenAI, xAI, OpenRouter, anything OpenAI-compatible), a local model, or sign in with your ChatGPT or SuperGrok subscription.\n\nLet me know what you think!\n\nComments URL: [https://news.ycombinator.com/item?id=49965932](https://news.ycombinator.com/item?id=49965932)\n\nPoints: 1\n\n# Comments: 0", "url": "https://wpnews.pro/news/show-hn-usermods-an-extension-that-runs-an-a-coding-agent-to-build-userscripts", "canonical_source": "https://github.com/kballenegger/usermods", "published_at": "2026-10-05 15:14:21+00:00", "updated_at": "2026-10-05 15:20:48.848679+00:00", "lang": "en", "topics": ["ai-agents", "ai-tools", "developer-tools", "ai-products"], "entities": ["Usermods", "Chrome", "Safari", "iOS", "Anthropic", "OpenAI", "xAI", "OpenRouter"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/show-hn-usermods-an-extension-that-runs-an-a-coding-agent-to-build-userscripts", "markdown": "https://wpnews.pro/news/show-hn-usermods-an-extension-that-runs-an-a-coding-agent-to-build-userscripts.md", "text": "https://wpnews.pro/news/show-hn-usermods-an-extension-that-runs-an-a-coding-agent-to-build-userscripts.txt", "jsonld": "https://wpnews.pro/news/show-hn-usermods-an-extension-that-runs-an-a-coding-agent-to-build-userscripts.jsonld"}}