Peter Steinberger

Announces joining OpenAI to build accessible AI agents while transitioning OpenClaw to an independent foundation.

Details how modern AI models have dramatically accelerated his development workflow, allowing shipping at unprecedented speeds.

Technical deep-dive into a subtle macOS signing bug and the debugging process to resolve it.

Advocates for direct, intuitive interaction with AI models over complex frameworks and elaborate harnesses.

Co-created with Orta Therox, a meetup format for AI-assisted developers: lightning talks, no recordings, no selling.

Live demonstration of building a complete application using AI coding tools.

Definitive guide to his AI development setup: Ghostty + Claude Code + minimal tooling. Context is precious, less is more.

Curated list of must-read resources for developers working with AI coding agents.

Reflection on the addictive nature of AI-assisted coding and the 'just one more prompt' compulsion.

Introduces Poltergeist, a tool for keeping builds fresh and automating build pipeline maintenance.

Critique of AI-generated startup content and generic advice flooding the tech ecosystem.

Monthly curated reading list for the agentic engineering community.

Guide to running AI models locally, covering infrastructure choices and practical tradeoffs.

Investigation into privacy issues in logging frameworks and system-level data collection.

Retrospective on one year of VibeTunnel — turning browsers into Mac terminals for remote AI development.

Complete guide to integrating AppleScript with command-line tools on macOS.

Major update to Peekaboo — lightning-fast macOS screenshots for AI agents, now available as standalone CLI.

Updated guide to running multiple Claude Code instances in parallel for maximum development throughput.

Foundation reading list for developers entering the agentic engineering space.

Raw account of 16-hour AI-assisted coding days and the dopamine-driven loop of rapid iteration.

Workflow for using AI (Gemini) to rapidly understand unfamiliar codebases.

Introduces stats.store, a privacy-first analytics solution for macOS apps using Sparkle.

Technical guide to displaying settings windows from macOS menu bar applications.

Launches VibeTunnel, enabling browser-based terminal access to Mac for remote AI development.

Updated Vibe Meter for tracking Claude Code costs and usage patterns.

Introduces llm.codes for making developer documentation AI-friendly and searchable.

Deep technical exploration of automatic observation tracking across Apple’s UI frameworks.

Introduces Peekaboo, an MCP server enabling AI agents to take and analyze macOS screenshots instantly.

Practical guide to migrating a large test suite from XCTest to the new Swift Testing framework.

Guide to running multiple concurrent Claude Code instances for parallel development — the multi-agent workflow.

War story of macOS code signing and notarization challenges with the Sparkle update framework.

Introduces Vibe Meter, a macOS menu bar app for monitoring AI coding tool spending.

Runs Claude Code with full system permissions, using AI as a universal computer interface for coding, automation, and system management.

Practical advice on choosing AI tool subscriptions without overthinking the decision.

Open-source Swift library for converting HTML to Markdown, useful for AI agent pipelines.

Live workshop building two functional apps in 3 hours, demonstrating AI-assisted development where code becomes cheaper and iteration becomes faster.

Guide to best practices for building and using Model Context Protocol servers with AI coding tools.

After selling PSPDFKit and struggling with post-exit emptiness, rediscovered passion through building with AI.

Technical solution for controlling menu visibility in SwiftUI macOS applications.

Workaround for SwiftUI keyboard shortcut bugs in macOS apps.

Technique for handling simultaneous tap and long-press gestures on SwiftUI buttons.

Early experience report using M1 Mac Minis for CI/CD pipelines.

Comprehensive developer review of Apple’s M1 chip covering performance, compatibility, and development workflow impact.

Strategies for curating a useful Twitter feed by muting noise and following high-signal accounts.

Practical guide to growing a developer-focused Twitter following through authentic engagement.

Critical assessment of SwiftUI’s maturity and readiness for production use.

Investigation into UIKit controls that are silently blocked in Mac Catalyst Mac Idiom mode.

Workaround for SwiftUI’s automatic keyboard avoidance behavior in UIHostingController.

Guide to implementing effective logging in Swift applications using os_log and custom solutions.

How to build and test projects with unreleased Swift compiler snapshots from trunk.

Advanced technique for calling super implementations at runtime in Swift using the Objective-C runtime.

Review of zld, a drop-in faster replacement for Apple’s ld linker for faster build times.

Introduces InterposeKit for elegant method swizzling in Swift, enabling runtime behavior modification.

Detailed investigation into a recurring text input crash in Mac Catalyst applications.

How iOS jailbreaking enables better debugging and understanding of UIKit internals.

Blog relaunch post, committing to regular writing about iOS/macOS development.

Inside look at PSPDFKit’s distributed team culture, processes, and engineering practices.

Advanced techniques for runtime method swizzling in Swift applications.

Practical guide for first-time WWDC attendees covering logistics, networking, and sessions.

Technical challenges encountered implementing drag-and-drop in iOS apps, especially for PDF documents.

Early exploration of Apple’s Marzipan (later Catalyst) for bringing iOS apps to macOS.

Strategies for managing Slack notifications and maintaining focus in distributed teams.

Advanced debugging techniques for iOS/macOS development including LLDB, dtrace, and runtime inspection.

Challenges and solutions for distributing pre-compiled Swift frameworks.

Making Objective-C APIs more Swift-friendly through naming conventions and nullability annotations.

Argument for replacing UITableView with UICollectionView as the default list component in iOS.

Techniques for dramatically speeding up iOS UI test execution.

Lessons from building PSPDFKit’s fully distributed engineering team across multiple countries.

Guide to writing effective Apple Radar bug reports that actually get fixed.

Technical exploration of real-time collaboration in document editing and Apple’s approach.

Best practices for checking iOS versions efficiently in code.

Deep investigation into whether UIImage is thread-safe in practice, with surprising findings.

Techniques for making Objective-C code more idiomatic when used from Swift.

PSPDFKit’s practical approach to cross-platform development across iOS, Android, and web.

Unexpected behaviors and edge cases when using Swift extensions.

How to use ccache to dramatically speed up Objective-C/C++ compilation times.

Analysis of Apple’s ResearchKit framework for medical research applications.

Hidden UIKit debugging features and how to activate them for development.

Introduction to Aspects, a popular iOS library for clean aspect-oriented programming via method swizzling.

Deep dive into safe method swizzling patterns and touch event forwarding in UIKit.

Philosophy of finding and fixing Apple framework bugs through runtime patches — a hallmark of PSPDFKit’s approach.

How to implement UIAppearance protocol support in custom iOS views.

Elegant pattern for intercepting delegate methods using NSProxy in Objective-C.

Announcement of leaving a previous role to focus full-time on PSPDFKit.

Blog reboot — fresh start for writing about iOS development.