minikin

How to write good Given/When/Then scenarios for Keeler specs. Use during /keeler:spec when drafting or amending a spec, and during /keeler:review when checking spec conformance — covers scenario granularity, observable-behavior phrasing, and the traps that…

Catalog of property-test invariants and proptest patterns for Rust. Use when writing tests during /keeler:tdd or strengthening tests after /keeler:mutants — whenever code has an invariant worth pinning (round-trips, ordering, idempotence, bounds, merging) or…

Opinionated architecture and production patterns for Rust web services built with Axum, Tokio, SQLx, and Tower. Use this skill when: (1) starting or structuring a Rust web service or API, (2) adding an endpoint, migration, repository, service, or middleware…