A method for automating service invocation in message flows between a client (2100) and a server (2104), includes a step of generating a message (2300) including content by said client (2100), a step of transmitting said message by said client (2100) via a network (2103) to said server (2104), wherein said method further includes a step of intercepting said message (2300) by a message interception device (2105) in the network (2103), and a step of determination by said message interception device (2105) whether a service is needed for further execution on said content part of said message. In case a service is needed, said method includes a further step of selecting at least one service engine for further execution of at least one service on said content part of said message.