The connector contract enables contracts to send messages of arbitrary data and ZETA tokens between smart contract-enabled connected chains.

To create a contract that uses ZetaChain's connector, use:

• connector.send to send a message
• implement a onZetaMessage function to handle incoming messages
• implement a onZetaRevert function to handle reverted messages

You can find in-depth tutorials on how to use connector to send messages in the "Tutorials" section of the docs:

• Connector: Send ZETA
• Connector: Messaging
• Connector: ERC-20
• Connector: NFTs

Please, note that the connector API is separate from the onCrossChainCall functionality.

A universal app must implement onCrossChainCall, but it may also use the connector API to send and receive messages to and from ZetaChain's Universal EVM.

• When sending messages to ZetaChain or native gas or supported ERC-20 tokens, use onCrossChainCall.
• When sending messages from ZetaChain or transferring ZETA, use the connector.