vibium

Why we included this project

Coding agents that build or modify web interfaces share a real weakness: they often can't tell whether what they produced actually works. Vibium exists to give them that check. It installs as a skill, so an agent like Claude Code or Codex can open a URL, find interactive elements, click, fill forms, and capture screenshots through simple commands, with an MCP server and JavaScript, Python, and Java client libraries as alternatives. Elements are located by visible text, form label, placeholder, or ARIA role, so the agent never has to reason about fragile CSS selectors. The tool is a single ~10MB binary built on WebDriver BiDi, and the browser downloads itself on first run, which keeps setup minimal. Teams that want agents to verify their own front-end work before handing it back should find this concrete and useful.