browser-daemon

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Fast browser automation via FGP daemon - 3-12x faster than Playwright MCP. Use when user needs to navigate web pages, take screenshots, click elements, fill forms, scrape content, or get ARIA accessibility snapshots. Triggers on "open URL", "take screenshot", "click button", "fill form", "get page content", "scrape website", "automate browser".

1installs
Sourcefast-gateway-protocol/fgp-skills
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NPX Install

npx skill4agent add fast-gateway-protocol/fgp-skills browser-daemon

Tags

Translated version includes tags in frontmatter
browser-automationfgp-daemonchrome-devtools-protocolweb-scrapingform-automation

SKILL.md Content

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FGP Browser Daemon

Ultra-fast browser automation using Chrome DevTools Protocol directly. 3-12x faster than Playwright MCP for navigation, 50x faster for ARIA snapshots.

Why FGP?

OperationFGP DaemonPlaywright MCPSpeedup
Navigate2-8ms27ms3-12x
ARIA Snapshot0.7-9ms2-3ms3x
Screenshot25-30ms50-80ms2x
FGP daemons are persistent UNIX socket servers - no cold start, no process spawn overhead.

Installation

bash
# Install via Homebrew (macOS/Linux)
brew install fast-gateway-protocol/tap/fgp-browser

# Or build from source
git clone https://github.com/fast-gateway-protocol/browser
cd browser && cargo build --release
The install script handles daemon setup:
bash
bash ~/.claude/skills/fgp-browser/scripts/install.sh

Usage

Once installed, the daemon runs in the background. Call it via the 
fgp
CLI:
bash
# Navigate to URL
fgp browser open "https://example.com"

# Get ARIA accessibility tree (for understanding page structure)
fgp browser snapshot

# Take screenshot
fgp browser screenshot /tmp/page.png

# Click element
fgp browser click "button[type=submit]"

# Fill input field
fgp browser fill "input#email" "user@example.com"

# Press key
fgp browser press Enter

# Select dropdown option
fgp browser select "select#country" "United States"

Available Commands

CommandDescriptionExample
open <url>
Navigate to URL
fgp browser open "https://google.com"
snapshot
Get ARIA tree
fgp browser snapshot
screenshot <path>
Capture PNG
fgp browser screenshot /tmp/shot.png
click <selector>
Click element
fgp browser click "#submit"
fill <selector> <text>
Fill input
fgp browser fill "input" "hello"
press <key>
Press key
fgp browser press Enter
select <selector> <value>
Select option
fgp browser select "select" "opt1"
hover <selector>
Hover element
fgp browser hover ".menu"
scroll [direction]
Scroll page
fgp browser scroll down

Multi-Session Support

Create isolated browser sessions for parallel work:
bash
# Create new session
fgp browser session new --name "shopping"

# Use specific session
fgp browser --session shopping open "https://amazon.com"

# List sessions
fgp browser session list

# Close session
fgp browser session close shopping

Daemon Management

bash
# Check daemon status
fgp browser health

# View available methods
fgp browser methods

# Stop daemon
fgp browser stop

# Restart daemon
fgp browser start

Example Workflow

bash
# 1. Open a page
fgp browser open "https://github.com/login"

# 2. Get page structure
fgp browser snapshot

# 3. Fill login form
fgp browser fill "input#login_field" "username"
fgp browser fill "input#password" "password"

# 4. Submit
fgp browser click "input[type=submit]"

# 5. Screenshot result
fgp browser screenshot /tmp/github-logged-in.png

Troubleshooting

Chrome not found

Error: Chrome executable not found
Install Chrome or set 
CHROME_PATH
environment variable.

Daemon not running

Error: Connection refused
Start the daemon: 
fgp browser start

Permission denied on socket

Error: Permission denied
Check socket permissions: 
ls -la ~/.fgp/services/browser/daemon.sock

Architecture

FGP Browser uses:
  • Chrome DevTools Protocol for browser control (not Playwright)
  • UNIX sockets for IPC (sub-millisecond latency)
  • Persistent daemon (no cold start)
  • NDJSON protocol (simple, debuggable)
Socket location: 
~/.fgp/services/browser/daemon.sock