# RPC Reference

- [eth\_subscribe](/developer-docs/overview-2/rpc-reference/eth_subscribe.md): eth\_subscribe — WebSocket subscriptions for real-time logs, state changes, mini-blocks, and block headers on MegaETH.
- [eth\_callAfter](/developer-docs/overview-2/rpc-reference/eth_callafter.md): eth\_callAfter — execute eth\_call after waiting for an account's nonce to reach a target value.
- [eth\_getLogsWithCursor](/developer-docs/overview-2/rpc-reference/eth_getlogswithcursor.md): eth\_getLogsWithCursor — paginated log queries using a cursor for incremental retrieval of large datasets.
- [realtime\_sendRawTransaction](/developer-docs/overview-2/rpc-reference/realtime_sendrawtransaction.md): realtime\_sendRawTransaction — submit a transaction and receive the receipt in a single call without polling.
- [Error Codes](/developer-docs/overview-2/rpc-reference/error-codes.md): MegaETH JSON-RPC error codes — HTTP status codes, RPC error codes, explanations, and mitigations.