Harness Engineering: What I learned from 24,000 prompts building production apps
Since early 2026 I've been building my own harness around Claude Code. What held, who checks the agent's work, and what it actually costs.
Since early 2026 I've been building my own harness around Claude Code. What held, who checks the agent's work, and what it actually costs.
Adit Lal · 10 Oct 2026Notes from building Android apps: Compose, KMP and AI agents.
With a harness I built for it. I write here about Compose, KMP and engineering with AI agents. If you want an app built, a codebase rescued, or your team trained, let's talk.
Worked with Gojek · JioCinema · Equal AI · DoorDash · Stream
Native Android or Compose Multiplatform (Android + iOS), from idea to Play Store.
Book a call →Performance, recomposition, architecture and release problems in an existing app.
Book a call →Compose, KMP and agentic Android workshops for startups and accelerators.
Book a call →Shipped products, Android and iOS from Kotlin.

A calm coffee brew journal. Guided pour timer, bean shelf with freshness, recipes learned from coffee reels. One Kotlin codebase for Android and iOS.

Your city at a glance: weather, air quality, what to eat now, events and getting around, assembled per city by a server-driven layout.
The system behind the speed. Use them on your own apps.
A crew of coding agents run by a rulebook: intent, spec, design, build, QA, review.
X-ray vision for your AI agent: reads the running app's UI tree, Compose state, navigation and recomposition.
Recomposition budgets for Compose: catch runaway recompositions before they ship.
Compose guidance for coding agents, with real androidx source as receipts. Claude Code, Codex, Gemini, Cursor.
Lets your agent read Rebound budgets and fix recomposition problems.
Measure, diagnose, fix and re-measure Android performance from a Perfetto trace.
Intent scoping, compound engineering memory and intent-guard checks for Spec Kit.
Make impossible states impossible: state machines and reactive architecture in Compose.
Server-driven UI for Compose and SwiftUI. Ship screens without shipping releases.
Compose and Kotlin Multiplatform components people use.
A complete Compose design system.
Coachmarks with real transparent cutouts. Android + iOS.
Google Photos-style pinch-to-resize grid with haptics.
The Material 3 side sheet Google never shipped.
Gmail/Photos multi-select app bar pattern.
Gmail-style To/CC chip input with validation and suggestions.
GPU-accelerated magnifying-glass loupe effect.
Small Compose Multiplatform builds that push one idea.