> For the complete documentation index, see [llms.txt](https://archive-ko.docs.klaytn.foundation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://archive-ko.docs.klaytn.foundation/content/dapp/json-rpc/servicechain.md).

# Service Chain API references

- [mainbridge](https://archive-ko.docs.klaytn.foundation/content/dapp/json-rpc/servicechain/mainbridge.md): 서비스체인과 연결된 메인체인 EN과 관련된 API입니다.
- [subbridge](https://archive-ko.docs.klaytn.foundation/content/dapp/json-rpc/servicechain/subbridge.md): 서비스체인 EN과 관련된 API.