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[ARTICLE · art-154606] src=jev-browser.rovira.sh ↗ pub= topic=ai-agents verified=true sentiment=↑ positive

Show HN: Jev drives a browser – HN login and search in 8s for half a cent

Developer zurfyx published jev-browser-skill, a three-file, dependency-free repository and demo site showing the Jev / OpenAI Decisions API driving a browser by extracting each page's controls into a table and picking an operation and target with a probability for every option. The Hacker News login replay completes in 8 seconds for under half a cent, with Jev averaging 250ms per response (123–495 ms on the HN run) and each stateless step costing a few thousand input tokens, under a tenth of a cent. Jev never sees the DOM and cannot generate text, so any text input must be supplied ahead of time by the user or a complementary LLM.

read1 min views2 publishedOct 21, 2026

I put this repo and site together as an educational reference for folks getting started with Jev / OpenAI Decisions API.

This demonstrates how Jev can drive a browser (the idea being extract it into a skills file). On every step the page's controls are extracted into a table, and Jev picks an operation and a target, with a probability for every option.

Try the HN login replay (https://jev-browser.rovira.sh/#hackernews-login), Amazon (https://jev-browser.rovira.sh/#amazon-cart), or run it live with your own key. Interesting bits: - Jev mean response time is 250ms (123–495 ms on the HN run). - Jev never sees the DOM, only a table of controls extracted from it ahead of time. It's in some ways, similar to the accessibility tree that good LLM browser skills use now. - Jev can't generate text (in a good way) so this need to be provided ahead of time, either by you or a complementary LLM. - Each step is stateless and costs a few thousand input tokens, under a tenth of a cent.

Repo (three files, no dependencies): [https://github.com/zurfyx/jev-browser-skill](https://github.com/zurfyx/jev-browser-skill)

Comments URL: [https://news.ycombinator.com/item?id=50181149](https://news.ycombinator.com/item?id=50181149)

Points: 1

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