# RPC

- [chain\_getBlock](/api-docs/polkadot-api/rpc/chain_getblock.md): Get header and body of a relay chain block
- [chain\_getHeader](/api-docs/polkadot-api/rpc/chain_getheader.md): Retrieves the header for a specific block
- [system\_chainType](/api-docs/polkadot-api/rpc/system_chaintype.md): Retrieves the chain type
- [state\_getMetadata](/api-docs/polkadot-api/rpc/state_getmetadata.md): Returns the runtime metadata