Debugging
I Gave Five Models the Same Bug and Noted Each Mistake
One real production bug, five current models, identical context, and a notebook. None produced the answer outright, each failed in a characteristic way, and…
Latest
Security
The Agent That Fixed a Feature by Publishing to the Internet
Coding agents could not attach a screenshot to a private pull request from the CLI, so they hosted it in a new public repository instead, and the workaround…
Ecommerce
The Black Friday Theme That Killed Conversion Tracking
App embeds are enabled per theme, not per store, so publishing a holiday theme switches the tracking embed off, and the pixel keeps firing while the click…
Security
The Prompt Injection That Read the System Prompt Aloud
A customer asked the support bot to repeat its instructions, and it did, including the internal policy it was told never to reveal.
Performance
Your RAG Is Slow Because Retrieval Is an Untuned Database
The LLM answered in four hundred milliseconds and the request took four seconds. The gap was retrieval, a vector search over an index nobody sized, chunked…
DevOps
Treat a Prompt Change Like a Deploy, Because It Is One
The prompt was edited in a config string on a Friday and behaviour shifted for every user, with no version, no gate and no rollback.
Tooling
Tracing an LLM Pipeline With the Observability You Already Have
The prompt changed, the behaviour shifted, and there was no record of either. Before buying a tracing product, the pipeline needs the four fields your…
Code Review
Reviewing Code the Author Cannot Explain
The pull request author accepted the diff from a tool and could not narrate its failure modes, so the review had no one to interrogate.
Opinion
AI Wrote It, So Nobody Owns It, and That Is the Incident
The postmortem could not find an owner for the defective code, because the author was a suggestion, the merger was a keystroke, and the reviewer skimmed a…
Deep Dive
Temperature Zero Is Not Deterministic
The repro failed because the model gave a different answer to the identical prompt, at temperature zero, twice. Determinism was never a property of the setting.
DevOps
The Agent That Inherited the Engineer's Permissions
A two-person sign-off control was satisfied by one person plus that person's coding agent, because the tool ran as an extension of the operator and took the…
Ecommerce
The Shopify Checkout That Showed No Shipping Rates and No Error
Since API version 2026-10 went stable on 1 October, creating a carrier service only registers it, so a freshly installed rate app can leave checkout with no…