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

# opBNB JSON-RPC API

The standard Ethereum methods documented here are supported by Infura on the opBNB layer 2 network.

Currently, only near head requests (the last 128 blocks) are supported in the opBNB service. Archive requests are not supported.

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WebSockets are also supported on the opBNB mainnet network and can be used to set up bidirectional stateful [subscriptions](/services/reference/opbnb/json-rpc-methods/subscription-methods/).