> For the complete documentation index, see [llms.txt](https://archive-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-docs.klaytn.foundation/content/dapp/json-rpc/servicechain.md).

# Service Chain API references

- [mainbridge](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/servicechain/mainbridge.md): APIs related to main chain ENs connected with a service chain.
- [subbridge](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/servicechain/subbridge.md): APIs related to service chain ENs.