What problem does it solve? Codebases drift into inconsistent patterns: untyped boundary data, floating promises, shallow modules, and ad hoc retry logic. This Skill gives the agent a rigorous, opinionated rulebook so every change follows the same architecture standards for TypeScript, Effect, and Cloudflare projects. ## Core Features & Use Cases - Boundary and parsing rules: Enforces parsing unknown input at seams, strict command schemas, and separate protocol versus persistence projections. - Async and workflow standards: Covers cancellation propagation, bounded concurrency, retry-safe commands, idempotency keys, and atomic transition guards. - Module and domain design: Guides deep module design, branded types, state machines, functional core / imperative shell separation, and dependency seams. - Effect and Cloudflare references: Provides dedicated guidance for Effect Services, Layers, Schema, scheduling, caching, HTTP clients, and Cloudflare Workers, Durable Objects, and Agents. - Use Case: When asked to add a new API endpoint that creates payments, the agent applies idempotency rules, parses the request body with a strict schema, models the invoice lifecycle as a state machine, and wraps the provider call in a typed Effect HTTP client. ## Quick Start Review my new TypeScript service module against the coding standards and report any violations with fixes.