Verdict: Evidence-First Agent Harness for Reproducible Bug Fixes
Most flaky bug reports end in one of two places: "cannot reproduce" or a patch nobody can prove fixed the problem. Verdict enforces a stricter contr…
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The port that moved: how an auto-update broke a user's AI agent for three hours
A friend sent me two screenshots. His terminal was full of this: Hook error: POST http://127.0.0.1:61716/hook?src=belay connect ECONNREFUSED 127.0.0…
The baseline that quietly stopped meaning anything (and closed real trades)
Last week a program I wrote closed every open position on a live trading account and refused to do any more work for the rest of the day. Nothing ha…
Five bugs in my LLM app that never threw an error
I spent two and a half weeks building an agent that reads a project's code review history and remembers what it decided. 86,321 comments from pandas…
Your subagent finished — you just could not hear it: how agent replies actually reach the parent
We spawned two review agents, waited, got nothing, declared them unresponsive, fell back to self-review, and shipped. Hours later — the moment our m…
RHEL: /data Disappeared After Reboot? Troubleshoot LVM and Multipath Before Touching pvcreate
A filesystem disappearing after a reboot is one of those incidents where a quick "fix" can make the situation much worse. Imagine this: /data is mis…
The download button worked everywhere except iPhone
I launched my first real site yesterday, and it really has been a labour of love.. Something I have spent an ungodly amount of hours building out 38…
Tailwind Typography's prose Is Leaking Into Your Components — and the Three-Tier Fix
My CTA button had underlined links and the wrong text color, and no matter which utility class I stacked on it the issues didn't correct. The culpri…
Your webhook signature is failing because of bytes you can't see
"Webhook signature verification failed." You've checked the secret five times. It's correct. It still fails. I've now written verification guides fo…
How I find out whether a filter is filtering: ask it two questions that cannot share an answer
A tool that filters can fail in a way that is almost impossible to notice: it returns a plausible number of plausible results, and none of them were…
The value of know-how in the age of AI
Recently, I struggled with a bug in one of my programs that did not work as expected. The issue made me feel frustrated because I had done everythin…
52 Days of Silent Zeros: The Stop Hook Payload Has No usage Field
I used to be a college student scraping by on ¥100k a month. Then I was laid off. Six months later, after building an autonomous Claude Code environ…
The 3% Drop That Only Showed Up on a Clean Server: A Debugging Retrospective
My forwarder lost 3% of its messages. My laptop reported zero. CI reported zero. Staging lost thousands every hour. I blamed the network. I blamed t…
My AI Refactor Was Slow. The Model Wasn't Guilty.
Everyone talks about what developers do while AI codes. Mostly, we wait. So I measured the waiting. The model was not guilty. For two weeks my workf…
Third-party APIs don't fail loudly — they return less
For several days, my service was quietly broken and every health check said it was fine. No exceptions. No 5xx. No alerts. The upstream API returned…
Four Java Bugs That Bad Indentation Hides in Plain Sight
javac does not care what your code looks like. Whitespace carries zero meaning in the Java Language Specification, so the compiler reads your file a…
The trailing newline that broke every webhook signature.
I spent an evening convinced GitHub was sending broken webhook signatures. It wasn't. echo was. The setup Chngd's GitHub Marketplace webhook verifie…
WordPress 7.1 deleted the check that kept classic editors un-iframed. Run this grep.
WordPress 7.1 took down a client's editor last week. Every custom ACF block moved its fields to the sidebar, and on one site they stopped saving wit…
How I Triaged 8,400 Production Errors Into 11 Real Bugs With Claude Code
TL;DR My error tracker had 8,400 events a week across ~340 distinct issues, and nobody on the team actually triaged them. I built a small pipeline t…
Docker Swarm Said “Insufficient Resources.” The Running Service Was Using 480 KiB
I expected this task to schedule. The running service was barely doing anything: MemoryUsage=480KiB / 5.772GiB MemoryPercent=0.01% CPU=0.00% Then I…
The CSP that killed our own form (a production-only Next.js bug)
A user wrote to us with the kind of bug report that makes your stomach drop: "The forgot-password form is not working at all." Not "it's slow." Not…
I spent two weeks building a content pipeline and then found I had no way to tell if it worked
Over two weeks I got a system doing all of this: writing articles, generating social cards, deploying to a CDN, verifying 41 redirects row by row, c…
cached_tokens is 0 because your system prompt isn't stable
I added a [cache] log line next to our usage tracker and read usage.prompt_tokens_details.cached_tokens off a warm conversation. It said 0 . Then 1…
My Car Had a Check Engine Light. My Code Has console.log().
Sometimes the Best Way to Find a Bug Is to Move It A few weeks ago, the check engine light came on in my 2007 SUV. I plugged in an OBD scanner and g…
The Fix That Passed Review and Crashed in Release
The fix passed review. It still crashed in release. The reviewer was never tested. The reviewer was me. And an AI model. We both approved the same w…
SSE Fragmented My JSON Into 30 Pieces. Here's the Parser That Put It Back Together.
I was building a streaming chat interface against MonkeyCode's free model access and its free server option, and the first few test runs went so smo…
.NET 10 BufferedStream WriteByte: Flush Full Buffers Explicitly
BufferedStream.WriteByte had a surprising side effect through .NET 9: the call at its internal capacity boundary also called Flush() on the wrapped…
Optimizing Keyboard Navigation in Complex Web Apps: Techniques and Debugging Tools
Ever found yourself tabbing through a complex web app only to get trapped inside a modal, or worse, see the focus jump erratically like it’s playing…
The Agent Crash-Looped on a Truncated Line: A Ledger Debugging Retrospective
The workflow had been running for six hours when the first alert fired. The apply stage was exiting with a JSONDecodeError, the supervisor was resta…
Unread badges that would not clear: 59 of my 64 messages were junk
I am building a small chat feature for an HR system. Shared hosting, PHP, no WebSocket, polling every few seconds. Nothing exotic. Then a bug report…