For backend engineers: make every API you build or consume survive production.
Reach for this when an integration has to be bulletproof — payments that can't double-charge, webhooks you don't control, third-party APIs that throttle or fall over, and contracts that change under you. It turns the hard-won production patterns into skills: idempotent writes, hardened webhook receivers, correct backoff under rate limits, circuit breakers and bulkheads for flaky upstreams, cursor pagination and delta sync, typed clients from OpenAPI, and date-pinned versioning with a real deprecation path. Install it before the integration that, if it breaks, pages you at 3am.
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See each skill in this pack in action.