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Guides and lessons from building AI, WordPress and custom software

Practical articles on AI agents, RAG, MCP, WordPress, SEO and running software products — written while the work is fresh.

Product

How much does an AI agent cost to build and run?

The model bill is rarely the expensive part. Here is what actually drives AI agent cost — to build and to run — and how to estimate whether one pays for itself.

Sep 2026 · 4 min read
AI engineering

How to evaluate a RAG system before your users do

"It seems to work" is not a test. Here is the small, boring evaluation setup that tells you whether your RAG system is getting better or worse with every change.

Sep 2026 · 4 min read