# Effect Skill

Kit Langton's opinionated agent skill for building production TypeScript apps with Effect v4 — workflows, services, layers, schemas, config, schedules, caches, streams, HTTP clients, and tests, with current APIs and production defaults.

**Type:** guideline
**Added:** 2026-07-21
**Author:** [Kit Langton (@kitlangton)](https://x.com/kitlangton)
**Link:** https://www.skills.sh/kitlangton/skills/effect
**Topics:** AI Coding, Dev Tools
**Tags:** agents, effect-ts, typescript

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Install it with:

```bash
npx skills add kitlangton/skills@effect
```

An opinionated, agent-facing guide for writing production Effect v4 code. It pins current APIs and sane production defaults so agent output stops drifting toward stale patterns, while deferring to established project conventions unless the task is explicitly changing them.

Covers the pieces you actually reach for in a real app: workflows and services, layers for wiring, schemas, configuration, schedules and retries, caches, streams, HTTP clients, and how to test all of it. My default reference for any Effect (TS) work.

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## Links

- Directory entry: https://andrey-markin.com/directory/effect-skill
- All directory entries: https://andrey-markin.com/directory
- Contact: https://andrey-markin.com/#contact