An example operation may include one or more of identifying a caller blockchain node and one or more callee blockchain nodes within a blockchain network and issuing, by the caller blockchain node, application programming interface calls to application programming interfaces corresponding to each of the one or more callee nodes, in response to a first application programming interface call being issued successfully, directing a smart contract associated with the caller blockchain node to initiate a distributed transaction involving the one or more callee nodes to perform the application program interface calls, the caller node issues application programming interface calls and the one or more callee nodes each performing application programming interface requests.