# JSON RPC & Websocket & Kafka

- [JSON-RPC API](/developer/json-rpc-and-websocket-and-kafka/json-rpc-api.md)
- [JSON-RPC Errors](/developer/json-rpc-and-websocket-and-kafka/json-rpc-errors.md)
- [Websocket](/developer/json-rpc-and-websocket-and-kafka/websocket.md)
- [Kafka](/developer/json-rpc-and-websocket-and-kafka/kafka.md)