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John

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Joined on Jun 22, 2026

John

Jul 12

When a Site Blocks Your Scraper, Read the Browser Tab You Already Have Open

#automation #javascript #sideprojects #webscraping

6 min read

John

Jul 11

The Silent 10 Tax: How a Nondeterministic System Prompt Voids Your LLM Prompt Cache

#ai #llm #performance

6 min read

John

Jul 10

A Fair Coin Isn't Enough: When a Perfectly Randomized Experiment Is Impossible to Analyze

#analytics #data #dataengineering #datascience

6 min read

John

Jul 4

Model or Method? Building a Deterministic Lab to Measure an AI Agent Fleet's Own Behavior

#agents #ai #softwaredevelopment #testing

8 min read

John

Jul 1

How to Stop AI Agent Skills, Hooks, and Cron Jobs from Silently Conflicting Over Where They Run and What Data They Trust

#agents #ai #architecture #systemdesign

6 min read

John

Jun 30

Do Multiple Personas on One LLM Give Real Diversity, or Do You Need Different Model Families?

#agents #ai #architecture #llm

6 min read

John

Jun 29

Claude Code '400: no low surrogate in string' on every turn: repairing a permanently broken session transcript

#ai #claude #cli #tutorial

6 min read

John

Jun 27

If an LLM Extracts the Inputs, Is Your Deterministic Score Really Deterministic? Stopping Provenance Laundering

#ai #architecture #llm #security

7 min read

John

Jun 26

macOS: nslookup works but curl and Python "Could not resolve host" — the mDNSResponder zombie

#cli #networking #python #tutorial

3 min read

John

Jun 24

A file-based work-bus for orchestrating a fleet of agent CLIs — coordination without a message broker

#agents #ai #architecture #systemdesign

5 min read

John

Jun 22

How to make an AI research agent label facts vs inferences — a deterministic provenance pipeline

#ai #llm #rag

4 min read

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