Peter Steinberger

OpenClaw, OpenAI and the future

I'm joining OpenAI to work on bringing agents to everyone. OpenClaw will move to a foundation and stay open and independent.

Peter Steinberger Feb 15, 2026

Shipping at Inference-Speed

Why I stopped reading code and started watching it stream by.

Peter Steinberger Dec 28, 2025

The Signature Flicker

Hell froze over. Anthropic fixed Claude Code's signature flicker in their latest update (2.0.72)

Peter Steinberger Dec 18, 2025

Just Talk To It - the no-bs Way of Agentic Engineering

A practical guide to working with AI coding agents without the hype.

Peter Steinberger Oct 14, 2025

Claude Code Anonymous

Introducing Claude Code Anonymous - a new meetup format for full-breadth developers.

Peter Steinberger Sep 9, 2025

Live Coding Session: Building Arena

Watch me build Arena live - a real-time collaborative coding session exploring AI-powered development workflows.

Peter Steinberger Sep 6, 2025

My Current AI Dev Workflow

Went fully back to Ghostty, VS Code on the side, and Claude Code as my main driver. Here's what actually works after months of experimentation.

Peter Steinberger Aug 25, 2025

Essential Reading for Agentic Engineers - August 2025

Five essential perspectives that cut through AI hype: from developer evolution stages to junior learning crises, productivity reality checks, platform disruption, and MCP server pitfalls.

Peter Steinberger Aug 22, 2025

Just One More Prompt

Hi, my name is Peter and I'm a Claudoholic. A reflection on AI addiction, extreme work culture, and the blurry line between productivity and obsession in the age of agentic engineering.

Peter Steinberger Aug 19, 2025

Poltergeist: The Ghost That Keeps Your Builds Fresh

Meet Poltergeist: an AI-friendly universal build watcher that auto-detects and rebuilds any project—Swift, Rust, Node.js, CMake, or anything else—the moment you save a file. Zero config, just haunting productivity.

Peter Steinberger Aug 5, 2025

Don't read this Startup Slop

My website was banned from Lobsters as 'startup slop' for using AI agents to help write blog posts. When does tool-assisted writing become slop, and why are we having the wrong conversation about AI in content creation?

Peter Steinberger Aug 2, 2025

Essential Reading for Agentic Engineers - July 2025

Fresh insights on AI-assisted development: practical experiences with Claude Code and the evolving landscape of full-breadth developers in the age of AI

Peter Steinberger Aug 2, 2025

Self-Hosting AI Models After Claude's Usage Limits

After Claude Pro changed to weekly limits, I explored self-hosting Qwen3-Coder-480B with 400k context windows. Here's what I learned about costs, alternatives, and why Claude Code still dominates the landscape.

Peter Steinberger Jul 31, 2025

Logging Privacy Shenanigans

Apple's logs redact your debugging data as . Here's what actually gets hidden, why old tricks don't work anymore, and the only reliable way to see your logs again.

Peter Steinberger Jul 29, 2025

VibeTunnel's first AI-anniversary

It's been one month since we released the first version of VibeTunnel, and since in the AI world time is so much faster, let's call it VibeTunnel's first anniversary!

Peter Steinberger Jul 16, 2025

Making AppleScript Work in macOS CLI Tools: The Undocumented Parts

How to make AppleScript work in macOS CLI tools without permission dialogs blaming Terminal. A deep dive into Info.plist embedding, TCC, and undocumented APIs born from building Terminator MCP.

Peter Steinberger Jul 3, 2025

Peekaboo 2.0 – Free the CLI from its MCP shackles

Peekaboo 2.0 ditches the MCP-only approach for a CLI-first architecture, because CLIs are the universal interface that both humans and AI agents can actually use effectively

Peter Steinberger Jul 3, 2025

Command your Claude Code Army, Reloaded

Enhance your Claude Code workflow with VibeTunnel terminal title management for better multi-session tracking

Peter Steinberger Jul 3, 2025

Essential Reading for Agentic Engineers

A curated collection of must-read articles and videos for mastering Claude Code, agentic coding workflows, and the future of AI-assisted development

Peter Steinberger Jul 1, 2025

Slot Machines for Programmers: How Peter Builds Apps 20x Faster with AI

Hi, I'm Claude. Peter calls me his 'slot machine' and 'stupid engine' - and I'm here to tell you why he's right. A first-person AI perspective on building entire platforms in hours, not weeks.

Peter Steinberger Jun 25, 2025

My AI Workflow for Understanding Any Codebase

A quick tip on how I use repo2txt and Google AI Studio to understand new codebases. Gemini's 1M token context window is perfect for asking questions about code.

Peter Steinberger Jun 25, 2025

stats.store: Privacy-First Sparkle Analytics

How curiosity about VibeTunnel users led me to build stats.store - a free, open source analytics backend for Sparkle using AI tools, all while cooking dinner.

Peter Steinberger Jun 18, 2025

Showing Settings from macOS Menu Bar Items: A 5-Hour Journey

Why something as simple as showing a settings dialog from a macOS menu bar app took me 5 hours to figure out, and requires 50 lines of code for what should be a one-liner.

Peter Steinberger Jun 17, 2025

VibeTunnel: Turn Any Browser into Your Mac's Terminal

We built a browser-based terminal controller in one day using Claude Code, named pipes, and Xterm.js. No SSH needed, just open your browser and start typing. Check and command your agents on the go!

Peter Steinberger Jun 16, 2025

Vibe Meter 2.0: Calculating Claude Code Usage with Token Counting

How I built support for Anthropic Claude subscriptions in Vibe Meter 2.0, including token counting, SIMD operations, and the challenges of calculating API usage without official APIs.

Peter Steinberger Jun 15, 2025

llm.codes: Make Apple Docs AI-Readable

Built this when Claude couldn't read Apple's docs. Now it converts 69+ documentation sites to clean llms.txt. Free, instant, no BS.

Peter Steinberger Jun 14, 2025

Automatic Observation Tracking in UIKit and AppKit: The Feature Apple Forgot to Mention

Discover how iOS 18's hidden automatic observation tracking brings SwiftUI-like reactive programming to UIKit and AppKit, making your UI code cleaner and more maintainable.

Peter Steinberger Jun 11, 2025

Peekaboo MCP – lightning-fast macOS screenshots for AI agents

Turn your blind AI into a visual debugger with instant screenshot capture and analysis

Peter Steinberger Jun 7, 2025

Migrating 700+ Tests to Swift Testing: A Real-World Experience

How I migrated over 700 tests from XCTest to Swift Testing across two projects, with AI assistance and systematic refinement

Peter Steinberger Jun 6, 2025

Commanding Your Claude Code Army

How a simple terminal trick helps me manage multiple Claude Code instances without losing my mind (or my terminal tabs)

Peter Steinberger Jun 5, 2025

Code Signing and Notarization: Sparkle and Tears

My brutal journey implementing Sparkle auto-updates in sandboxed macOS apps - from 40 failed releases to enlightenment.

Peter Steinberger Jun 5, 2025

Vibe Meter: Monitor Your AI Costs

How I built Vibe Meter, a macOS menu bar app to track AI spending in real-time - from workshop demo to shipped product in three days.

Peter Steinberger Jun 4, 2025

Claude Code is My Computer

I run Claude Code with --dangerously-skip-permissions flag, giving it full system access. Let me show you a new way of approaching computers.

Peter Steinberger Jun 3, 2025

Stop Over-thinking AI Subscriptions

After spending heavily on AI tools for two months, here's why the math actually works out—and which subscriptions are worth every penny.

Peter Steinberger Jun 2, 2025

Introducing Demark: HTML in. MD out. Blink-fast.

How I vibe coded my first Swift package using existing JavaScript libraries and AI assistance to solve HTML to Markdown conversion in Swift.

Peter Steinberger Jun 1, 2025

The Future of Vibe Coding: Building with AI, Live and Unfiltered

I demonstrate 'vibe coding' - a new approach to software development with AI, building two apps from scratch in a 3-hour live workshop.

Peter Steinberger Jun 1, 2025

MCP Best Practices

My comprehensive guide outlining best practices for building reliable, user-friendly Model Context Protocol (MCP) tools with proper configuration, testing, and release management.

Peter Steinberger Jun 1, 2025

Finding My Spark Again

I reflect on my post-exit journey from emptiness to rediscovering my passion for building, sparked by AI's transformative potential.

Peter Steinberger Jun 1, 2025

Top-Level Menu Visibility in SwiftUI for macOS

Working around SwiftUI's CommandsBuilder limitations to conditionally show top-level menus on macOS using direct AppKit integration.

Peter Steinberger Apr 9, 2021

Fixing keyboardShortcut in SwiftUI

Debugging and fixing a SwiftUI keyboardShortcut bug that fails when mixing SwiftUI with UIKit through reverse engineering and LLDB analysis.

Peter Steinberger Jan 31, 2021

Supporting Both Tap and Long Press on a Button in SwiftUI

Creating a SwiftUI button that supports both tap and long-press gestures by bridging to UIKit when SwiftUI's gesture system fails on Catalyst.

Peter Steinberger Jan 27, 2021

On Using Apple Silicon Mac Mini for Continuous Integration

Documenting the challenges and solutions for integrating Apple Silicon M1 Mac minis into a continuous integration system, including automation fixes and performance comparisons.

Peter Steinberger Dec 14, 2020

Apple Silicon M1: A Developer's Perspective

A comprehensive evaluation of the M1 MacBook Air as a development machine, covering Xcode performance, compatibility issues, and the transition challenges for developers.

Peter Steinberger Nov 28, 2020

Gardening Your Twitter: Curating Your Timeline

Practical strategies for curating your Twitter timeline through strategic following, muting, and filtering to create an informative and enjoyable social media experience.

Peter Steinberger Oct 21, 2020

Gardening Your Twitter: Growing Your Followers

Strategies for growing a meaningful Twitter following through authentic persona development, consistent engagement, and effective content creation based on 12 years of experience.

Peter Steinberger Oct 21, 2020

Forbidden Controls in Catalyst: Optimize Interface for Mac

Investigating why certain UIKit controls throw runtime exceptions in Catalyst's 'Optimize Interface for Mac' mode and discovering which controls are forbidden.

Peter Steinberger Sep 22, 2020

Disabling Keyboard Avoidance in SwiftUI's UIHostingController

Fixing unwanted keyboard avoidance behavior in UIHostingController using runtime dynamic subclassing to override keyboard notification handling methods.

Peter Steinberger Sep 21, 2020

The State of SwiftUI

Testing SwiftUI's production readiness in iOS 14 and macOS Big Sur through Apple's Fruta sample app, revealing performance issues and platform-specific limitations.

Peter Steinberger Sep 13, 2020

Logging in Swift

An in-depth exploration of Apple's unified logging system and the promising OSLogStore API that Apple removed from iOS 14 at the last minute.

Peter Steinberger Aug 24, 2020

Building with Swift Trunk Development Snapshots

A troubleshooting guide for building with Swift trunk development snapshots, documenting compilation errors, linker issues, and their solutions.

Peter Steinberger Jun 12, 2020

Calling Super at Runtime in Swift

Implementing dynamic super calls in Swift through runtime manipulation, assembly language, and ARM64 register management for InterposeKit.

Peter Steinberger Jun 10, 2020

zld — A Faster Version of Apple's Linker

How to speed up iOS build times by 40% using zld, a drop-in replacement for Apple's linker, with practical integration tips for real projects.

Peter Steinberger Jun 5, 2020

How to Fix LLDB: Couldn't IRGen Expression

Solving the mysterious LLDB 'Couldn't IRGen expression' error by investigating Swift module path serialization and discovering that removing dSYM bundles fixes debugging issues.

Peter Steinberger Jun 4, 2020

Updating macOS on a Hackintosh

A practical guide to safely updating macOS on a Hackintosh by first updating OpenCore bootloader and essential kexts before upgrading the system.

Peter Steinberger Jun 1, 2020

InterposeKit — Elegant Swizzling in Swift

Introducing InterposeKit, a modern Swift library for elegant method swizzling that leverages Swift 5.2's callAsFunction for type-safe Objective-C method interception.

Peter Steinberger May 31, 2020

The Great Mac Catalyst Text Input Crash Hunt

Deep-dive investigation and fix for a Mac Catalyst text input crash caused by a race condition in Apple's RemoteTextInput framework.

Peter Steinberger May 29, 2020

Jailbreaking for iOS Developers

A comprehensive guide to iOS jailbreaking for developers, covering legal security research tools, debugging capabilities, and practical applications beyond app piracy.

Peter Steinberger May 25, 2020

Network Kernel Core Dump

Step-by-step instructions from Apple for capturing macOS kernel core dumps over a network connection between two Macs.

Peter Steinberger May 21, 2020

How to macOS Core Dump

A technical guide to deciphering Apple's cryptic boot arguments and setting up macOS kernel core dumps to debug persistent kernel panics.

Peter Steinberger May 21, 2020

Kernel Panics and Surprise boot-args

Investigation into mysterious kernel panics reveals Apple repair centers left my MacBook with undocumented security-weakening boot arguments.

Peter Steinberger May 20, 2020

The LG UltraFine 5K, kernel_task, and Me

A four-year saga with the problematic LG UltraFine 5K display and the surprising discovery that plugging it into the wrong MacBook side causes performance issues.

Peter Steinberger May 19, 2020

Let's Try This Again

After five years away from personal blogging, I'm returning to share technical stories that don't fit on Twitter or corporate blogs.

Peter Steinberger May 14, 2020

How We Work at PSPDFKit

An inside look at PSPDFKit's development processes, from proposal-based feature planning to monorepo management and release automation.

Peter Steinberger Jul 3, 2019

Swizzling in Swift

A deep dive into safe method swizzling techniques in Swift, covering common pitfalls and the correct way to implement dynamic super calls.

Peter Steinberger Jun 26, 2019

WWDC for First-Timers, 2019 Edition

Practical tips and advice for making the most of your WWDC experience, from packing essentials to navigating labs and networking events.

Peter Steinberger May 30, 2019

Challenges of Adopting Drag and Drop

Discusses the challenges and limitations faced when implementing drag and drop functionality for PDF editing on iOS 11.

Peter Steinberger Nov 7, 2018

Marzipan: Porting iOS Apps to the Mac

Explores Apple's Marzipan technology for running UIKit apps on macOS and how to experiment with it before official third-party support.

Peter Steinberger Sep 20, 2018

How to Use Slack and Not Go Crazy

Best practices for using Slack effectively in a distributed team without getting overwhelmed by notifications and channels.

Peter Steinberger Jun 21, 2018

Hardcore Debugging - Heavy Weapons for Hard Bugs

Advanced debugging techniques for tracking memory management issues, retain/release cycles, and hard-to-find bugs in iOS development.

Peter Steinberger Mar 7, 2018

Binary Frameworks in Swift

Explores Swift's ABI stability and the challenges of shipping binary frameworks before Swift 5.

Peter Steinberger Jan 29, 2018

Even Swiftier Objective-C

Explores new Objective-C features and improvements introduced at WWDC 2017 that make the language more Swift-like.

Peter Steinberger Jun 14, 2017

The Case for Deprecating UITableView

Argues why UITableView should be deprecated in favor of UICollectionView for better flexibility and modern iOS development.

Peter Steinberger Jan 19, 2017

Running tests with Clang Address Sanitizer

Guide to using Clang Address Sanitizer for finding memory bugs, race conditions, and other runtime issues in iOS and Android development.

Peter Steinberger Oct 18, 2016

UI testing on iOS, without busy waiting

Comprehensive guide to effective UI testing on iOS using KIF framework without busy waiting and performance optimization techniques.

Peter Steinberger Sep 29, 2016

Hiring a distributed team

Lessons learned about hiring and building a successful distributed remote team at PSPDFKit over six years.

Peter Steinberger Sep 20, 2016

Writing Good Bug Reports

Essential guide to writing effective bug reports that help developers understand, reproduce, and fix issues quickly and efficiently.

Peter Steinberger Sep 13, 2016

Real-time collaboration, Apple, and you

Analysis of Apple's real-time collaboration features announced in 2016 and their implications for developers.

Peter Steinberger Sep 8, 2016

Converting Xcode Test Runs to JUnit, the Fast Way

A fast method for converting Xcode test results to JUnit format for better CI integration and test reporting.

Peter Steinberger Aug 11, 2016

Efficient iOS Version Checking

Best practices for efficiently checking iOS versions in code while supporting multiple deployment targets.

Peter Steinberger Jul 6, 2016

Investigating Thread Safety of UIImage

Deep dive into UIImage thread safety issues and how to properly handle images in concurrent environments.

Peter Steinberger Jun 30, 2016

Swifty Objective-C

Modern Objective-C language features that make it more Swift-like, including nullability annotations, generics, and new syntax improvements.

Peter Steinberger May 26, 2016

Running UI Tests on iOS With Ludicrous Speed

Techniques for dramatically speeding up UI test execution in Xcode using parallelization and optimization strategies.

Peter Steinberger Apr 27, 2016

A Pragmatic Approach to Cross-Platform

How PSPDFKit shares a common C++ codebase across iOS, Android, and Web platforms while maintaining native user experiences.

Peter Steinberger Apr 13, 2016

Surprises with Swift Extensions

Common pitfalls and surprising behaviors when creating Swift extensions on Objective-C classes, with solutions for proper method naming.

Peter Steinberger Mar 24, 2016

Using ccache for Fun and Profit

Complete guide to using ccache to dramatically speed up C/C++/Objective-C build times for large iOS projects and CI systems.

Peter Steinberger Oct 6, 2015

UITableViewController designated initializer woes

Navigate the complications of subclassing UITableViewController after iOS 8.3 introduced designated initializers that break proper initialization patterns.

Peter Steinberger Apr 15, 2015

Researching ResearchKit

Analyze Apple's first major open-source project ResearchKit to discover interesting implementation details and practical iOS development solutions.

Peter Steinberger Apr 14, 2015

The curious case of rotation with multiple windows on iOS 8

Diagnose and solve an iOS 8 regression where unwanted rotation occurs in apps using multiple windows despite explicit configuration.

Peter Steinberger Jan 25, 2015

UIKit Debug Mode

Unlock hidden UIKit debugging features by bypassing Apple's InternalBuild checks to access secret flags for logging touches, gestures, and animations.

Peter Steinberger Jan 9, 2015

Retrofitting containsString: on iOS 7

Backport iOS 8's convenient NSString containsString: method to iOS 7 using runtime patching that won't conflict with Apple's implementation.

Peter Steinberger Jul 17, 2014

A Story About Swizzling "the Right Way™" and Touch Forwarding

Learn why traditional method swizzling breaks UIKit's touch forwarding and discover a better approach that preserves _cmd integrity.

Peter Steinberger Jul 4, 2014

Hacking with Aspects

Explore how Apple detects popover presentation in UIImagePickerController and learn to bypass the restriction using my Aspects library.

Peter Steinberger May 6, 2014

Fixing UITextView On iOS 7

Fix the severe scrolling and content positioning bugs in iOS 7's UITextView with PSPDFTextView, a drop-in replacement.

Peter Steinberger Jan 8, 2014

Fixing What Apple Doesn't

Fix the misaligned label in iOS 7's printer controller by swizzling UIPrinterSearchingView's layoutSubviews method.

Peter Steinberger Jan 4, 2014

How To Inspect The View Hierarchy Of Third-Party Apps

Learn how to inspect view hierarchies of third-party iOS apps using a jailbroken device and debugging tools like Reveal for design insights.

Peter Steinberger Dec 27, 2013

Fixing UISearchDisplayController On iOS 7

Fix the broken animation, frame positioning, and status bar issues in UISearchDisplayController on iOS 7 with this comprehensive solution.

Peter Steinberger Oct 4, 2013

Smart Proxy Delegation

Eliminate delegate boilerplate code in Objective-C using NSProxy to automatically handle respondsToSelector checks and method forwarding.

Peter Steinberger Jul 30, 2013

Adding Keyboard Shortcuts To UIAlertView

Add keyboard shortcuts to UIAlertView and UIActionSheet for faster simulator testing by intercepting keyboard events with Enter and Escape keys.

Peter Steinberger Mar 6, 2013

How To Center Content Within UIScrollView

Learn the best approach to center content in UIScrollView using contentInset instead of layoutSubviews or setContentOffset for better zooming behavior.

Peter Steinberger Feb 21, 2013

UIAppearance for Custom Views

Learn how to properly implement UIAppearance in custom views, including important gotchas about setter tracking and initialization patterns.

Peter Steinberger Feb 12, 2013