> For the complete documentation index, see [llms.txt](/llms.txt).

# Arbitrum subscription methods

Subscription methods are available for [WebSocket](/services/concepts/websockets/) connections only, and allow you to wait for events instead of polling for them. For example, dapps can subscribe to logs and receive notifications when a specific event occurs.

The following subscription methods are available:

- [eth_subscribe](/services/reference/arbitrum/json-rpc-methods/subscription-methods/eth%5Fsubscribe/) - Create a subscription to a particular event
- [eth_unsubscribe](/services/reference/arbitrum/json-rpc-methods/subscription-methods/eth%5Funsubscribe/) - Cancel an active subscription

info

We recommend you use the WSS protocol to set up bidirectional stateful subscriptions. Stateless HTTP WebSockets are also supported.