Programs Beat Prompts: How Tap Turns AI into a Compiler for Browser Automation

#ai

The Problem

Every time you ask an AI agent to do something in a browser, it costs money and time. Click here, type there, extract that — the AI figures it out from scratch every single time.

What if AI only had to figure it out once?

Tap: The Compiler Approach

Tap is a protocol + toolchain that turns AI's interface operations into deterministic programs (.tap.js files):

Forge — AI observes the page (network, DOM, a11y tree) and writes a tap program
Verify — Test the tap with different inputs
Run forever — The tap replays deterministically. Zero AI cost.

First run:  AI inspects → writes .tap.js     ($0.50)
Every run:  .tap.js replays deterministically ($0.00)

How It Works

8 core operations + 17 built-in operations = complete browser control protocol.

A tap program is plain JavaScript:

export default {
  site: "github",
  name: "trending",
  async run(tap) {
    await tap.nav("https://github.com/trending")
    return tap.eval(() => {
      return [...document.querySelectorAll('article.Box-row')].map(el => ({
        repo: el.querySelector('h2 a')?.textContent?.trim(),
        stars: el.querySelector('.octicon-star')?.parentElement?.textContent?.trim()
      }))
    })
  }
}

Multi-Runtime

The same tap runs on:

Chrome Extension — Uses chrome.scripting (undetectable)
Playwright — Headless capable, CI/CD friendly
macOS — Native apps via Accessibility API

A new runtime implements 8 methods, gets 17 built-in operations for free.

Community Skills

119 community skills across 55 sites — tap-skills (open source).

Why Not Just Use Playwright?

	Playwright	Tap
Who writes scripts?	You	AI forges them
Cost per run	N/A	$0.00 (deterministic)
Runtimes	1	3+ (Chrome, Playwright, macOS)
Community scripts	No ecosystem	119 skills

Get Started

curl -fsSL https://leonting1010.github.io/tap/install.sh | sh
tap github trending
tap hackernews hot

Homepage: leonting1010.github.io/tap
Skills (open source): github.com/LeonTing1010/tap-skills

Programs beat prompts. AI forges once, programs run forever.

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