Running an OPS/REXX program using Swagger or Postman but the output of the say commands in this program are not shown anywhere.
OPS/MVS REST API
The output of REXX say instructions can be retrieved using the GET method of the opsrexx endpoint. You need to pass an instance token obtained when the REXX program was executed:
GET /api/v1/opsrexx/{instanceToken}
Query a previously submitted OPS/REXX program instance for any generated output and return code. The return code will only be available if the OPS/REXX program has completed execution.