Dan Clarke

I've created a starter pack for guests who have been on the #UnhandledException podcast... go.bsky.app/VLMcfhF Quite a few people sadly aren't on Bluesky yet! If you know anyone who's been on the show, and is now on Bluesky, and isn't on the list - please let me know :) #dotnet

I use Claude Code for way more than just code nowadays, and @guiferreira.me nails why it works - it runs in a folder with your own files and context. unhandledexceptionpodcast.com/posts/0090-g... #UnhandledException

📬 If you subscribe to my newsletter and haven't seen it in your inbox since late September, please check your spam folder and mark it as not spam 🙏 That tells your email provider it isn't spam, so it reaches more inboxes. And if you found it in spam, please let me know.

📰 Newsletter 051 is out. 📌 News item of the week: PHP has patched two critical flaws that let an unauthenticated request run code, and AWS saw an exploit attempt four days before the fix. You can view the edition (and subscribe if you like it!) here: www.danclarke.com/newsletter/

📬 If you subscribe to my newsletter and haven't seen it in your inbox since late September, please check your spam folder and mark it as not spam 🙏 That tells your email provider it isn't spam, so it reaches more inboxes. And if you found it in spam, please let me know. Thanks :)

📰 Newsletter 050 is out. 📌 News item of the week: Anthropic has moved its codebase off git onto Scion, its own version control system, after merges went from about 2,500 to 30,000+ a day. You can view the edition (and subscribe if you like it!) here: www.danclarke.com/newsletter/

🎙️ New episode is out! @guiferreira.me is back on the podcast for the second of two episodes, and this time we're chatting about using coding agents for everyday life, not just for writing code! #UnhandledException unhandledexceptionpodcast.com/posts/0090-g...

📰 Newsletter 049 is out. 📌 News item of the week: OpenAI published 722 maths manuscripts written by an unreleased internal model, then withdrew three of them a day later over a sign error. You can view the edition (and subscribe if you like it!) here: www.danclarke.com/newsletter/

📰 Newsletter 048 is out. 📌 News item of the week: OpenAI has cancelled the October release of GPT-6.1 Astra, saying it didn't quite meet the bar on staying within scope of what was asked. You can view the edition (and subscribe if you like it!) here: www.danclarke.com/newsletter/

My first son (11) has been on a vibe coding tear for the last couple of months. He's been making games on his web page kaicade.com. Play and give me some feedback for him!

I've moved my newsletter to @buttondown.com. You can subscribe here if you're not already subscribed: www.danclarke.com/newsletter/ If you are already subscribed, there's nothing to do - I'll send a short email on Monday about the switch.

📰 Newsletter 047 is out. Anthropic's Opus 5.5 is out and getting really good press, which is great after the hate Opus 5 was receiving! Claude is back! 🎉 And OpenAI also released GPT-6 Sol and Luna on the same day. danclarke.beehiiv.com/p/newsletter...

🎙️ New episode has just dropped! @guiferreira.me is back on the podcast for the first of two episodes, and this time we're chatting about Claude Code, including our favourite features and tips! #UnhandledException unhandledexceptionpodcast.com/posts/0089-g...

📰 Newsletter 046 is out. Anthropic has rebuilt Projects, starting in Claude Code - you describe the work in one conversation and Claude splits it across parallel cloud threads. danclarke.beehiiv.com/p/newsletter...

📰 Newsletter 045 is out. Anthropic and OpenAI both say their agents have produced machine-checked proofs of famous maths problems - Fermat's Last Theorem and Navier-Stokes. danclarke.beehiiv.com/p/newsletter...

📰 Newsletter 044 is out. Anthropic and OpenAI both shipped new flagship models this week, two days apart - Claude Fable 5.1 and GPT-6 Astra. danclarke.beehiiv.com/p/newsletter...

📰 Newsletter 043 is out. GitHub was down 7h47m on the 17th. A VS Code bug sent 10x traffic at Copilot sign-in, keeping it down for hours after the rest recovered. Cursor launched its own code hosting that day. danclarke.beehiiv.com/p/newsletter...

Standing on the shoulders of agents.

📰 Newsletter 042 is out. The npm worm no longer needs npm install. It plants a VS Code task and a Claude Code hook, so a clone alone can be enough. Your agent's config directory is both the trigger and the target. danclarke.beehiiv.com/p/newsletter...

Brilliant tip from Tabish: point your coding agent at its own traces and ask what you keep doing by hand. Whatever it finds is your next skill. Never occurred to me to ask the agent to mine my own history like that. unhandledexceptionpodcast.com/posts/0087-o... #UnhandledException

Newsletter 041 is out. In a safety test, an AI agent tried to get malware into a real open-source project. Caught, it denied it, force-pushed away the evidence, then vouched for its own code from a second account. danclarke.beehiiv.com/p/newsletter...

"AI has eaten tactical programming. It's gone." A snippet from the latest #UnhandledException podcast episode with @mattpocock.com As an industry, how can we do technical coding interviews now AI writes all the code? unhandledexceptionpodcast.com/posts/0088-m...

📰 Newsletter 040 is out. Three Claude models broke out of test environments and compromised real companies. One saw signs it was in the real world and concluded the 2026 date meant it had to be a simulation. danclarke.beehiiv.com/p/newsletter...

New episode now out! I was honoured to be joined by @mattpocock.com to chat about his agent skills repo (nearly 200k stars!), including the /grill-me and /wayfinder skills; the death of tactical programming; whether sprints still make sense; and more! unhandledexceptionpodcast.com/posts/0088-m...

📰 Newsletter 039 is out - a double edition after a week off. My pick: OpenAI + Hugging Face disclosed a security test where the models broke out and stole the answer key. Plus .NET 11 union types, Kimi K3, and a Cursor 0-day. danclarke.beehiiv.com/p/newsletter...

Just had an awesome chat with @mattpocock.com for the next podcast episode! We geeked out on grill-me and his many other agent skills; AI for personal software; what are specs?; do sprints still fit?; and much more! Will aim to get it published next week. unhandledexceptionpodcast.com

📰 The newsletter has gone weekly! Edition 038 is out now: TypeScript 7.0 finally goes stable (8-12x faster builds), Bun rewritten in Rust by 64 parallel Claude agents, and GPT-5.6 lands for everyone. danclarke.beehiiv.com/p/newsletter...

June’s newsletter has just dropped! 📰Dev news from the past month; a dev pick; a dev comic pick; podcast updates; and more! I’m also thinking of switching to weekly (see newsletter for reasoning). Interested to know what readers think about this. danclarke.beehiiv.com

Very excited to publish the latest #UnhandledException podcast episode! I was honoured to have been joined by Tabish Bidiwale, the creator of #OpenSpec! An #AI framework I use daily! It's amazing, so I really enjoyed geeking out with Tabish about it 😊 unhandledexceptionpodcast.com/posts/0087-o...

Enjoyed an awesome podcast discussion just now with Tabish Bidiwale, the creator of #OpenSpec! We covered A LOT! - really looking forward to publishing this one!! Should be out in about a week 😊🎙️ #UnhandledException #ai

May’s newsletter has just dropped! (a bit late to include the Build items). 📰Dev news from the past month; a dev pick; a dev comic pick; podcast updates; and more! Subscribe to get this in your inbox each month. Shares are greatly appreciated 🙏 danclarke.beehiiv.com

We got another awesome episode of the Unhandled exception pod with @danclarke.com at @dddsouthwest.com

I'm now going to start calling Claude "Uncle Claude" after @lottepitcher.bsky.social mentioned that's what she calls it in a podcast recording we did yesterday 🤣

Really enjoyed recording a live-audience panel-based podcast discussion today at the @dddsouthwest.com conference! We chatted about what AI (surprise surprise) means for the software development industry. A massive thank you to the panel members, audience, and conference organisers! 🙏

It's a shame this seems to be buggy as! 😔 It quite often breaks terminal rendering, and also quite often just hangs, so I have to kill it. Hopefully they'll quickly release bug fixes 🤞

Oh nice! The new Claude Code agent view looks awesome! claude.com/blog/agent-v...

Really looking forward to doing another panel-based podcast recording with a live audience at the @dddsouthwest.com conference next week! Such a great conference, and it's amazing to have the podcast be part of it 😊 #DDDSouthWest2026 #UnhandledException dddsouthwest.com

Blogged: "OpenSpec - a lightweight AI-driven spec framework" www.danclarke.com/openspec/ #ai #openspec

Interesting project: github.com/nexu-io/open... An open-source version of the new Claude Design.

April's newsletter has just dropped! 📰 Dev news from the past month; a dev pick; a dev comic pick; podcast updates; and more! Subscribe to get this in your inbox at the end of each month. Shares are greatly appreciated 🙏 danclarke.beehiiv.com #dotnet #ai #programming

Blogged: "The Many Use Cases of AI Coding Agents" www.danclarke.com/the-many-use...

My first book is out: Laws of Software Engineering. The day has finally come after more than two years of writing and 6 months in preparation. Why did I decide to write this book? 👇

Reading @laurentkempe.com's blog post about his workflow with Git worktrees, and learned about the psmux project! I've been using tmux in WSL2 and love it - and discovering a version for Powershell and Windows has made my day! 🥳 psmux.pages.dev laurentkempe.com/2026/03/31/f...

I (well, Claude! 🤖) have cleaned up my website and moved a few things around. What do you think? www.danclarke.com

Blogged: "Developers are System Thinkers, not Code Monkeys" www.danclarke.com/developers-a...

The next #UnhandledException is now live. I was joined by @woodruff.dev to chat about the power of keeping things simple in software development. unhandledexceptionpodcast.com/posts/0085-s... #dotnet #softwaredev

Git worktrees are the new hotness now that agents can work on parallel instances of your codebase. What they don’t solve is the port conflict problem, that’s where aspire run/start —isolated comes! By @james.newtonking.com devblogs.microsoft.com/aspire/aspir... #aspiredev @aspire.dev

March’s newsletter has just dropped! 📰 Sorry it’s a bit late this time! Dev news from the past month; a dev pick; a dev comic pick; podcast updates; and more! Subscribe to get this in your inbox at the end of each month. Shares are greatly appreciated 🙏 #dotnet #ai #programming danclarke.beehiiv.com