> For the complete documentation index, see [llms.txt](https://toothlessdev.gitbook.io/main/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://toothlessdev.gitbook.io/main/project/save-my-receipt/api-service-layer.md).

# API 호출을 Service Layer 로 관심사 분리하기