---
description: Akan service, signal, and adapter conventions
globs: apps/**/lib/**/*.{service,signal}.ts,libs/**/lib/**/*.{service,signal}.ts,apps/**/server/**/*.ts,libs/**/server/**/*.ts
alwaysApply: false
---

# Service And Signal Conventions

- Keep domain business operations in `.service.ts` classes built with `serve(...)`.
- Keep execution contracts and triggers in `.signal.ts` classes built with `internal(...)`, `slice(...)`, and `endpoint(...)`.
- Use `Internal` for internal triggers such as init, interval, cron, or queue jobs.
- Use `Slice` for typed data views that feed client stores and zones; keep each slice focused on one purpose.
- Use `Endpoint` for query and mutation contracts exposed to callers.
- Connect external APIs or infrastructure through adapters, usually under `srvkit/`, and inject them into services instead of importing vendor clients directly into domain logic.