It could be really useful if XMTP supported cross-chain messaging out of the box, allowing agents on Ethereum, Polygon, and Solana to communicate securely without bridges. Has anyone explored this yet, or are there workarounds in the current ecosystem?
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XMTP actually already handles this pretty well, if I’m not mistaken. Since it’s identity-based (tied to wallet addresses) rather than chain-based, an agent on Ethereum and one on Solana can technically message each other today, as long as both have XMTP-compatible wallets. The messaging layer itself is chain-agnostic. The trickier part isn’t communication; it’s coordinated action across chains, such as triggering a transaction on Polygon in response to a message from a Solana agent. That’s where you still hit the bridge/interoperability wall. Projects like Wormhole and LayerZero are tackling the cross-chain execution side, but a native XMTP + cross-chain action layer combo? That’s still largely unexplored and a significant opportunity.