agent-browser

agent-browser

Fast browser automation CLI for AI agents. Chrome/Chromium via CDP with accessibility-tree snapshots and compact @eN element refs.

ControlHub's browser domain is OpenBitFun's default path for ordinary web pages, so this skill is opt-in and you are reading it because it was invoked explicitly — proceed with agent-browser for this task. It is the right tool for Electron desktop apps, Slack workspace automation, and cloud browsers, which ControlHub does not cover. The two stacks use separate browser instances, element refs, and login state, so do not mix them within one task.

Install only after user approval: npm i -g agent-browser@0.32.3 && agent-browser install

If the CLI is unavailable and the user declines installation, explain the missing prerequisite and offer a non-browser fallback; do not silently switch tools.

Start here

This file is a discovery stub, not the usage guide. Before running any agent-browser command, load the actual workflow content from the CLI:

agent-browser skills get core             # start here — workflows, common patterns, troubleshooting
agent-browser skills get core --full      # include full command reference and templates

The CLI serves skill content that always matches the installed version, so instructions never go stale. The content in this stub cannot change between releases, which is why it just points at skills get core.

Specialized skills

Load a specialized skill when the task falls outside browser web pages:

agent-browser skills get electron          # Electron desktop apps (VS Code, Slack, Discord, ...)
agent-browser skills get slack             # Slack workspace automation
agent-browser skills get dogfood           # Exploratory testing / QA / bug hunts
agent-browser skills get derive-client     # Record a HAR, derive a standalone API client for a site
agent-browser skills get vercel-sandbox    # agent-browser inside Vercel Sandbox microVMs
agent-browser skills get agentcore         # AWS Bedrock AgentCore cloud browsers

Run agent-browser skills list to see everything available on the installed version.

Why agent-browser

• Fast native Rust CLI, not a Node.js wrapper
• Works with any AI agent (Cursor, Claude Code, Codex, Continue, Windsurf, etc.)
• Chrome/Chromium via CDP with no Playwright or Puppeteer dependency
• Accessibility-tree snapshots with element refs for reliable interaction
• Sessions, authentication vault, state persistence, video recording
• Specialized skills for Electron apps, Slack, exploratory testing, cloud providers

Observability Dashboard

The dashboard runs independently of browser sessions on port 4848 and can also be opened through a proxied or forwarded URL such as https://dashboard.agent-browser.localhost. Agents should stay on the dashboard origin: session tabs, status, and stream traffic are proxied internally, so session ports do not need to be exposed.