Xbridge is a cross-chain messaging protocol that introduces an intent-centric approach. First, Xbridge establishes a free market pricing ecosystem, allowing solvers to provide optimal rates on the target chain, allowing users and cross-chain market makers to flexibly participate in the circulation of cross-chain assets. Secondly, by introducing intent-based on-chain and letting Solvers provide specific Calldata, Xbridge effectively reduces the cost of cross-chain transactions and improves protocol efficiency. In addition, the design of the intent-based cross-chain protocol avoids MEV attacks and underlying protocol security verification issues, enhancing the privacy and security of user transactions.