Debugging workflows

Some embodiments of the inventive subject matter are directed to a debugging system ("system") configured to access a work flow document. The workflow document may include references to flow activities connected by flow connectors, forming a workflow path. Some of the flow connectors may have breakpoints. The debugging system can insert command instructions for a hypertext transfer protocol (HTTP) request into the workflow document at locations associated with the flow connectors and initiate a test run of the workflow path. In some embodiments, during the test run, when one of the flow connectors is reached, the system executes the command instructions for the HTTP request, sending the HTTP request to a debugger application ("debugger"). If a breakpoint is associated with the flow connector, the debugger can delay response to the HTTP request, otherwise the debugger can respond immediately. A user can debug the workflow document during the delay.