AI on Jamie Craane personal blog

Parsing, Visualizing and Analyzing Log Data with Claude Code

Thu, 11 Jun 2026 00:00:00 +0000

Introduction

A production system feels sluggish, you suspect the database, and you have a log file full of slow query entries staring back at you. The data you need is right there. The hard part is turning a few thousand lines of text into answers.

Recently I had exactly this situation: a log file from production containing slow database queries, and four questions:

Which queries are slow?
What is the distribution of the execution time?
When are the queries slow?
What are the most frequently executed queries?

These are the bread-and-butter questions of database performance work. And yet, answering them well is surprisingly awkward with the tools we usually reach for.

Operational Guardrails for Autonomous AI Agents in Production

Thu, 30 Apr 2026 00:00:00 +0000

We’ve all seen the viral stories circulating on X recently: an AI coding agent runs amok and deletes a production database. Immediately, the blame game begins: users point fingers at the agent framework, at coding assistants like Cursor, or at cloud platforms like Railway.

My take? The operator carries the responsibility. Tool vendors absolutely should ship safer defaults — scoped tokens, confirmation prompts on destructive operations, dry-run modes — and I’d happily criticize them for not doing so. But even with perfect vendor defaults, the buck stops with whoever wired the agent into production. Cursor and Railway are stand-ins here for any autonomous agent with tool access; the same arguments apply to whatever framework you’re running.

AI Assistant Prompt Catalog

Wed, 11 Dec 2024 00:00:00 +0000

AI Assistant prompt catalog

Prompts

Android: Replace kotlin synthetic view viewBinding

@author: https://x.com/jcraane

Kotlin synthetics are deprecated. This prompt replaces Kotlin synthetics in a file with viewBinding:

Replace kotlin synthetic with viewBinding.

Prefix all Koltin synthetic views with binding.

Replace snake case view names with camel casing.

$SELECTION

Create a unit test using Kotest and BehaviorSpec

@author: https://x.com/jcraane

You are an expert AI programmer which uses unit tests to verify behavior.

- Use Kotlin kotest BehaviorSpec
- Write unit tests for the obvious cases
- Write unit tests for the edge cases
- DO NOT EXPLAIN THE TEST
    
$SELECTION

Create a unit test using Jest

@author: https://x.com/jcraane