Effect-TS Expert

What it does

Provides expert, project-aware guidance for functional programming with the Effect library (Effect-TS). It helps agents produce correct, idiomatic Effect code for services, layers, typed errors, Schema/JSONSchema conversions, concurrency, streams, and deterministic tests. The skill emphasizes checking local project patterns first and using upstream Effect source only when necessary.

When to use it

Use this skill for non-trivial Effect-TS work: implementing or refactoring Services/Layers, handling typed/domain errors, Schema-driven decoding/encoding, resource lifecycle and concurrency, stream/backpressure issues, or writing Effect-aware tests (including @effect/vitest patterns). Avoid routing trivial edits that merely import effect.

What's included

• Scripts: none detected in the repo path (has_scripts=false)
• References: extensive reference files included (has_references=true) covering critical rules, services/layers, config, runtime, streams, testing, schema, and AI integration.
• Instructions: clear procedural guidance for research order (codebase patterns → Effect source → changelogs), critical rules to avoid, error taxonomy, dependency injection patterns, and example code snippets for common Effect patterns.

Compatible agents

Best used by agents that can run code-aware research and editing flows (Claude Code, Copilot-style code assistants, or any agent with repo browsing and TypeScript/Node context).