command-center/omp-docs/packages/pi-browser-use.md at c3f30bdbd032062f3de54ac0e46ed701feda16dd

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Features

Dynamic tool discovery — auto-proxies all upstream chrome-devtools-mcp tools with browser_ prefix
Tool description augmentation — adds usage hints for key tools
Result post-processing — strips embedded snapshots, detects overlay/stale element issues
Optional visual analysis — browser_analyze_screenshot via configurable vision model
Standalone mode — runnable as independent MCP server via CLI

Requirements

Node.js >= 20, Chrome (stable or newer), @earendil-works/pi-coding-agent >= 0.74.0.

Installation

pi install npm:@amaster.ai/pi-browser-use

Usage

As pi-coding-agent Extension (Recommended)

Auto-discovers and loads on session_start. Configure in .pi/settings.json:

{
  "pi-browser-use": {
    "headless": true,
    "channel": "stable",
    "viewport": "1280x720",
    "experimentalVision": true
  }
}

As Standalone MCP Server

npx @amaster.ai/pi-browser-use --headless --viewport=1280x720

Configuration

Session Mode

Mode	Description
`persistent` (default)	Reuses shared profile at `~/.pi/browser-profile`
`isolated`	Fresh ephemeral profile each session
`existing`	Connects to running browser instance

Browser Options

Option	Type	Default	Description
`headless`	`boolean`	`false`	Run headless
`channel`	`string`	—	Chrome channel: `canary`, `dev`, `beta`, `stable`
`viewport`	`string`	—	Viewport size, for example `1280x720`
`userDataDir`	`string`	—	Custom user data directory

Vision Model

{
  "pi-browser-use": {
    "visionModel": {
      "provider": "openai",
      "model": "gpt-4o"
    }
  }
}

Resolves API key and base URL from the model registry automatically.

Key Tools

Tool	Hint
`browser_click`	Use element uid from snapshot; UIDs invalidated after action
`browser_fill`	Does not work on canvas/custom widgets
`browser_press_key`	Accepts single key name only
`browser_take_snapshot`	Call first to get uids, and after every state-changing action

Cross-References

See Npx Skills for the pi-package distribution system.
See OKF Specification for the knowledge bundle format.

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