Version 1.X of Preemptive AI's http POST implementation uses the Domino OpenAgentURL Syntax.

By default, Domino limits OpenAgent to serial processing, one at a time. This is likely to create a bottleneck in any production implementation.

To improve throughput you need to change the setting "Run web agents and web services concurrently ?" to Enabled on the Servers, Internet Protocols, Domino Web Engine tab.

See this HCLSoftware Knowledge base article for more information https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0037118