effectts-skills

Audit Effect v4 code for anti-patterns, type safety issues, and best practice violations using a deterministic multi-phase harness. Dispatches ripgrep for text-safe rules, ast-grep for structural rules, and reserves LLM judgment for semantic-only rules. Reports findings with file:line evidence, fix suggestions, and severity scoring. Use when reviewing, auditing, or checking Effect code quality.

Idiomatic Effect v4 TypeScript patterns. Auto-activates for Effect code: ServiceMap.Service, Schema.Class, TaggedErrorClass, Effect.gen/Effect.fn, Layer composition, branded types, @effect/vitest. Triggers on: Effect, @effect/, Schema, ServiceMap, Layer, TaggedError.

Generate Effect v4 boilerplate: services, schemas, errors, tests. Adapts to project conventions. Use when asked to create, scaffold, or generate new Effect structures.