Event-driven channels

Optimism

Optimism is an Ethereum Layer 2 scaling network and the originator of the OP Stack — an open-source, modular rollup framework that powers OP Mainnet and a growing Superchain of interoperable chains (Base, Mode, Zora, Worldchain, and others). Developers interact via standard Ethereum JSON-RPC, the Op

5 channels across 1 AsyncAPI spec · Provider profile

Channels

eth_subscribe.logs

Subscription that pushes a notification for every log matching a filter. Filter parameters mirror upstream `eth_getLogs` (`address`, `topics`). Log entries include the standard fields plus may be asso

Optimism (OP Stack) WebSocket JSON-RPC API
eth_subscribe.newHeads

Subscription that pushes a notification each time a new block header is added to the chain. Standard op-geth (upstream go-ethereum) behaviour; the OP Stack does not add custom fields to the header its

Optimism (OP Stack) WebSocket JSON-RPC API
eth_subscribe.newPendingTransactions

Subscription that pushes the hash of every new transaction that enters the mempool. By default only transaction hashes are streamed; passing `true` as the second parameter requests the full transactio

Optimism (OP Stack) WebSocket JSON-RPC API
eth_subscribe.syncing

Subscription that emits when the node enters or exits sync. The notification is either `false` (synced) or a `SyncStatus` object describing progress. Behaviour matches upstream go-ethereum / op-geth.

Optimism (OP Stack) WebSocket JSON-RPC API
eth_unsubscribe

Cancel an active subscription using the id returned from the original `eth_subscribe` call.

Optimism (OP Stack) WebSocket JSON-RPC API