Overcommit and XML-RPC API

Is it possible to configure Host overcommit (CPU / Memory) via XML-RPC API?

I have tried to update a Host, but this information seems to be outside of the template.

Is it possible? How?

Hello, it should work and it is part of template.

RESERVED_CPU and RESERVED_MEM in negative numbers

DOCS

<TEMPLATE>
    <ARCH><![CDATA[x86_64]]></ARCH>
    <CPUSPEED><![CDATA[2941]]></CPUSPEED>
    <HOSTNAME><![CDATA[node1]]></HOSTNAME>
    <HYPERVISOR><![CDATA[kvm]]></HYPERVISOR>
    <IM_MAD><![CDATA[kvm]]></IM_MAD>
    <MODELNAME><![CDATA[Intel(R) Xeon(R) CPU E5-2630 v2 @ 2.60GHz]]></MODELNAME>
    <NETRX><![CDATA[325639025437]]></NETRX>
    <NETTX><![CDATA[2998717896647]]></NETTX>
    <RESERVED_CPU><![CDATA[-2400]]></RESERVED_CPU>
    <RESERVED_MEM><![CDATA[-13104]]></RESERVED_MEM>
    <VERSION><![CDATA[5.4.4]]></VERSION>
    <VM_MAD><![CDATA[kvm]]></VM_MAD>
  </TEMPLATE>

Is it these two?

I was expecting something matching the web interface.

I now saw a post mentioning negative values for reservations as a way to overcommit, is that it?

I guess I will have to review the documentation.

Yes, it is.