Show HN: Fab – a fast browser CLI for AI agents

Category: devtools

Tags: browser-automation, ai-agents, cli, scraping, security

Score: 7.0/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 6)

Fab is a CLI tool that lets AI agents control a real browser via natural language commands, producing structured JSON output and handling logins securely through password managers. It claims significant speed and accuracy improvements over MCP-based alternatives, with a novel approach that avoids MCP entirely and emphasizes bash-friendly output. The project is technically ambitious, with features like durable tasks, concurrency, and sidecar deployment for secret isolation.

Target audience: AI agent developers, automation engineers, backend developers

Repository: https://github.com/ianks/fast-agentic-browser · HTML · Apache-2.0 · 2 stars

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