Ai-Agents on Tech Blog

gstack Complete Guide Part 4: Development Philosophy for the AI Age

Fri, 03 Apr 2026 12:00:00 +0900

“600K Lines in 60 Days” — Garry Tan’s Challenge
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In early 2026, Y Combinator president Garry Tan shared something remarkable: while running YC full-time, he wrote over 600,000 lines of production code in just 60 days. This wasn’t a boast. It was a testimony to what gstack — the tool and the philosophy behind it — makes possible.

gstack Complete Guide Part 3: Real Browser Automation and Multi-Agent Parallel Execution

Fri, 03 Apr 2026 11:00:00 +0900

AI Takes the Wheel — The Limits of Traditional Browser Automation
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The era of AI agents freely browsing the web, clicking buttons, and submitting forms has arrived. But implementation reveals surprising obstacles. CSS selectors built on Selenium or Puppeteer break when frameworks change. XPath is fragile against DOM restructuring. And in modern web apps with strict CSP (Content Security Policy), even script injection is blocked.

gstack Complete Guide Part 2: Installation to Your First Sprint Workflow

Fri, 03 Apr 2026 10:00:00 +0900

Introduction: Imagine the Sprint First
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It’s two in the morning. You’re holding onto an idea that won’t leave your head. “Should I build this?” Immediately the familiar exhaustion sets in — requirements gathering, architecture design, writing code, review, testing, deployment. Days of work if you’re alone.

After installing gstack, that picture changes. You refine the idea into a product vision with /office-hours, build a TDD plan with /plan-eng-review, let Claude Code generate the implementation, and then /review catches bugs like a staff engineer would. /qa validates the UI in a real Chromium browser, /ship creates a PR with a full coverage audit, and /land-and-deploy takes the code to production and confirms health checks pass.

gstack Complete Guide Part 1: What Is Garry Tan's AI Software Factory?

Fri, 03 Apr 2026 09:00:00 +0900

In early 2026, a quiet but powerful wave swept through Silicon Valley. Garry Tan, President and CEO of Y Combinator, released an open-source project that crossed 62,600 GitHub stars within weeks. It’s called gstack. When word got out that he had personally used it to write 600,000 lines of code in 60 days — alone — the developer community was stunned.

This four-part series dives deep into what gstack is, how it works, and how you can apply it to your own development workflow. Part 1 focuses on understanding gstack’s origins and core architecture.

Harness Engineering Complete Guide — From CI/CD to Cloud Cost Management

Fri, 27 Mar 2026 18:00:00 +0900

As engineering teams grow, software delivery pipelines become increasingly complex. Plugin hell in Jenkins, manually managed environment variables, inconsistent deployment procedures across teams, and no clear visibility into where cloud costs are leaking. Harness was built to solve these problems structurally.

Harness is not just another CI/CD tool. It is a unified software delivery platform that provides CI, CD, GitOps, Feature Flags, Cloud Cost Management, and Security Testing Orchestration under a single roof. This guide covers Harness from its core architecture through real-world operational tips, written from a developer’s perspective.