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FGP - Fast Gateway Protocol

Daemon-based architecture for AI agent tools. Up to 480x faster than MCP stdio.

FGP replaces slow MCP stdio servers with persistent UNIX socket daemons. Instead of spawning a new process for each tool call (~2.3s overhead), FGP keeps daemons warm and ready (~10-50ms latency).

Performance

iMessage (macOS) - Fastest Local Daemon

Operation FGP iMessage MCP Stdio Speedup
Analytics 5ms 2,400ms 480x
Recent 8ms 2,300ms 292x
Unread 10ms 2,300ms 230x

Browser Automation (vs Playwright MCP)

Operation FGP Browser Playwright MCP Speedup
Navigate 8ms 2,328ms 292x
Snapshot 9ms 2,484ms 276x
Screenshot 30ms 1,635ms 54x

Multi-Step Workflow

4-step workflow: Navigate → Snapshot → Click → Snapshot

Tool Total Time vs MCP
FGP Browser 585ms 19x faster
Vercel agent-browser 733ms 15x faster
Playwright MCP 11,211ms baseline

Quick Start

# Install FGP CLI
cargo install fgp

# Install browser daemon
fgp install browser

# Start the daemon
fgp start browser

# Use it
fgp call browser open "https://example.com"
fgp call browser snapshot

Why FGP?

The Problem with MCP stdio

Every MCP tool call:

  1. Spawns a new process (~500ms)
  2. Initializes runtime (~1s)
  3. Establishes connections (~500ms)
  4. Finally executes your request

This adds ~2.3 seconds to every single operation. For a 5-step workflow, that's 11+ seconds of overhead.

The FGP Solution

FGP daemons:

  1. Start once, stay warm
  2. Accept requests via UNIX socket (~1ms)
  3. Execute immediately
  4. Return results in milliseconds

The daemon handles connection pooling, state management, and resource caching.

Architecture

┌─────────────────┐     UNIX Socket      ┌─────────────────┐
│   AI Agent      │ ──────────────────── │   FGP Daemon    │
│ (Claude Code)   │    ~10-50ms RTT      │  (browser, etc) │
└─────────────────┘                      └─────────────────┘
                                                  │
                                                  ▼
                                         ┌─────────────────┐
                                         │  External API   │
                                         │ (Chrome, Gmail) │
                                         └─────────────────┘

Available Daemons

Daemon Description Speedup Status
imessage macOS iMessage via SQLite 480x Stable
browser Chrome automation via DevTools Protocol 292x Stable
github GitHub GraphQL + REST 75x Beta
gmail Gmail API operations 69x Beta
calendar Google Calendar integration - Beta
fly Fly.io deployments - Alpha
neon Neon Postgres - Alpha
vercel Vercel deployments - Alpha

IDE & Agent Integrations

Platform Guide Status
Claude Code Integration Guide Full support
Cursor Integration Guide Full support
Windsurf Coming soon Planned

Next Steps