The TCEA Framework for humanizing AI-generated content. Model-specific writing profiles for GPT-5.4, Claude Opus 4.6, and Gemini 3.1 Pro. Seven detectability patterns, and an interactive Text Quality Scorer. Updated April 2026.
What it actually takes to build a reliable AI agent on Shopify's Admin API — rate limits, webhook discipline, state management, and safe execution patterns.
How vision-capable LLMs (GPT-4o, Gemini Pro Vision) help triage return claims from customer photos — where they work, where they fail, and guardian workflows.
A taxonomy of LLM agent action execution failures — hallucinated tool calls, retry storms, stale state — and the 11-layer guardrail stack that prevents them.
A practical engineering comparison of RAG and fine-tuning for commerce support — when to retrieve, when to retrain, and how to decide for your use case.
Architecture breakdown of a return resolution agent built on GPT-4o and Shopify's Admin API — tool calling, state management, what broke, and how we fixed it.