SQL Agent

Buildable now. The repo, the spec and the deployment steps are live — the written walkthrough for this one is still being drafted.

A natural-language-to-SQL agent with sqlglot AST-based safety validation (SELECT-only, provably — not a fragile regex check), schema introspection, and a self-correcting retry loop that injects SQL errors back into the prompt. Same retry-on-failure pattern as the test generator, applied somewhere a wrong answer can actually hurt — a database.

AST-based safety validation (not regex) on generated SQL is the detail that makes this defensible in a real interview — shows you think about AI output as untrusted input.

Clone this project, run it locally, and compare your output against the description above.

SQL Agent on GitHub ↗

The quiz isn't written yet

The project itself is ready to build — the repo, the spec and the deployment steps are all live. What's missing is the written quiz that goes with it, and the order those get written in is decided by which ones people actually ask for.

The assignment isn't written yet

The project itself is ready to build — the repo, the spec and the deployment steps are all live. What's missing is the written assignment that goes with it, and the order those get written in is decided by which ones people actually ask for.