Open source · PostgreSQL
Free, live comparison between staging and production Postgres — the check Atlas and Flyway put behind a paywall.
Built and maintained by one engineer, in the open.
See what it catchesColumn
verified_at
Change
NOT_NULL_ADDED
Writing
A repeatable process for breaking down interview-style problems — pattern recognition, complexity budgeting, and how to structure the write-up.
SFT, LoRA, DPO, and RLHF all change a model's behavior — but none of them give it current knowledge. Here's how to decide between fine-tuning and RAG, why they're usually both needed, and what a complete production architecture looks like end to end.
RAG changes what the model sees, not what it knows. Here's when retrieval-augmented generation is the right tool, what a full RAG pipeline actually involves, and a worked example with country-specific regulations that change monthly.
The tool
Compares staging and production Postgres schemas directly, classifies each difference by risk, and blocks the deploy when something's unsafe. Free and open source — no dashboard, no schema-as-code conversion, one CI step.
Thinking about next
not startedAgent Guard — notes on logging what an AI agent does to infrastructure, and requiring approval before the risky parts reach production. Nothing is written down publicly yet, and nothing is shipping. If it turns into a tool, it'll show up here properly.
Maxwell
Founder and engineer
Open source contributors
Join once the first release ships