My Comment-Reply Audit Only Checked One Level Deep. Nested Replies Reported as Never Posted.
This repo runs a small comment-reply pipeline for my DEV.to articles. DEV.to's API can't post comments or reactions for a normal account key ( POST /a…
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Debugging a black box: 36 renders against Claude, and the part where my own data was wrong
If you've built an MCP App — the HTML widget an MCP server hands a host to render inline — you may have hit this: the tool call succeeds, structuredCo…
My MCP Tool's Audit Log Was Built So a Bad Write Would Leave a Trace. The Log Itself Leaves None.
A few days ago I fixed update_article , one of the tools in this repo's MCP server, because it had a nasty shape: it took a bare integer article_id , …
Intern Struggles with Unfamiliar Codebase: Mentorship and Debugging Practice Offered as Solutions
Bridging the Gap: Navigating the Chasm Between Academic Coding and Real-World Software Development The transition from academic coding to professional…
The Last Error Is Not Always the Root Cause: Diagnosing Android Test Failures
An Android UI test times out. Maestro reports that an element is missing. A screenshot shows a blank or half-rendered screen. It is tempting to fix th…
Your Toolchain Checks Grammar, Not Facts
I went looking for one wrong email address and found six wrong domains. They had been in production for months, across six different server functions.…
The cleanup that could never run: a silent Web Push leak in Go
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . Nothing reported this bug. No crash, no stack trace, no failing tes…
How FaultBox helped me solve a storage corruption bug I couldn't reproduce
I was testing NodeDB-Lite and PageDB through a real memory-layer application built on top of them. NodeDB-Lite is the embedded form of NodeDB for loca…
Three failures I still think about
People sometimes ask where the discipline comes from — the three-line rule, the habit of trusting nothing except my own running code, the assumption t…
My AI-Attribution Filter Strips Any Commit Mentioning "llm". Including the Ones About My Own LLM Calls.
Four days ago I audited a filter in this repo and found it was quietly eating legitimate commit messages. I wrote up the finding, proposed a fix, and …
My prepare-commit-msg Hook Got a Timeout Fix 3 Days Ago. It Has Never Once Executed.
Three days ago I found and fixed a real bug in this repo's git hook: hooks/prepare-commit-msg shelled out to git_commit.py , which called claude -p wi…
My AI Agent Refunded a Customer Twice, and Every Status Code Was 200
Last weekend, during the Agents of SigNoz hackathon, I wanted to avoid building yet another self-healing agent or a demo that simply detected an error…
When the exit code lies: fork retractions, lost transactions, and trusting the chain in midnight-node
Your transaction tool reports FAILED_TO_FINALIZE . Your CI marks the job red. Your retry logic fires. But the block explorer says the transaction fina…
My Scripts Say dev.to Blocks "the Default urllib User-Agent." That's Not the Actual Rule.
Two scripts in my my-git-manager repo — publish_devto.py and reply_comments.py — both carry the same one-line comment on the same header: req . add_he…
Testing & Debugging AI Agents: Ensuring Reliability in Production
Testing Agents is Different Normal code: Fixed inputs → Fixed outputs Agents: Variable inputs → Unpredictable outputs You need different testing strat…
When Your SPA Eats Your API Routes: Fixing the Cloudflare Worker vs React Router Conflict
This article was originally published on Jo4 Blog . My affiliate tracking links were returning the entire React app instead of a 302 redirect. Not a 4…
Your Lambda List Was Silently Truncated at 200 — And Your AI Assistant Never Knew
Hook An AWS account with 240 Lambda functions runs infrawise analyze . The tool prints a clean summary: services detected, findings generated, no erro…
Teaching a phone to disbelieve its own GPS
The bug report came in on a Tuesday. One line: "Your app says I hit 400 kmph. I was at a red light." He wasn't lying. Neither was the app. The phone g…
How to Test SendGrid Webhooks Locally
The Challenge of Testing SendGrid Webhooks Locally SendGrid webhooks are powerful—they let you track email opens, bounces, clicks, and delivery status…
How to Test Razorpay Webhooks Locally
The Challenge: Testing Razorpay Webhooks Without Public Infrastructure Testing Razorpay payment webhooks locally is frustrating. Razorpay's webhook sy…
Webhook 400 Bad Request: Debugging & Fixes
The 400 Bad Request Problem A webhook 400 bad request error hits your logs at 2 AM. Your integration was working yesterday. The provider (Stripe, GitH…
The Notification That Ate My MacBook: A Debugging Story
How a deleted-in-the-end time-tracking app pinned a macOS daemon at 99% CPU for who knows how long — and how every "obvious" fix failed before a one-l…
Instrument First, Then Prompt: Finding Real Agentic Pipeline Bugs
The default reaction when an agentic pipeline misbehaves is to open the system prompt and start rewriting it. The instinct makes sense — the prompt is…
The Guardrail Has to Be Code: How a Runaway Local LLM Corrupted APFS and Bricked a Mac Mini
Originally published on hexisteme notes . I run a small fleet of local agents on a Mac Mini M4 with 24 GB of unified memory. One afternoon it went dow…
VMware + macOS Ventura + Barrot Bluetooth (0A12:0001 / 0x08E7) — Looking for developers familiar with Apple's Bluetooth stack
I've spent several days reverse engineering a Bluetooth compatibility issue between VMware Workstation and macOS Ventura. This is not a normal Bluetoo…
Smash Story: The Demo Script That Out-Debugged My Test Suite
This is a Smash Stories submission for the DEV Summer Bug Smash : a debugging story about the gap between "all tests pass" and "it actually works" — a…
My Demo Script Found a Production Bug on Its First Run: A Tiny Post-Mortem
I built a demo script to show off a project. It failed on step 2 — and in doing so, it found a real bug that had been sitting in the codebase the whol…
My benchmark's Python column was N/A for a year — CPython's 4300-digit limit, and eight other bugs
Submission for DEV's Summer Bug Smash — Clear the Lineup track. The codebase a2a-benchmark is my multi-language A2A (Agent-to-Agent) performance suite…
My benchmark's Python column was N/A for a year — CPython's 4300-digit limit, and eight other bugs
Submission for DEV's Summer Bug Smash — Clear the Lineup track. The codebase a2a-benchmark is my multi-language A2A (Agent-to-Agent) performance suite…
DEV’s Big Summer Bug Smash is now LIVE! Share $5,000 in cash prizes, skateboards, and more across 20+ winners. 🐛🐞🪲
Today is National Be Nice to Bugs Day in the U.S. and we’re thrilled to launch our Big Summer Bug Smash powered by Sentry . This smashing good time in…