Point a number at it, describe how calls should be handled, connect the calendar and the payment provider, and answer a test call. There is no telephony project underneath it.
Most teams bolt an agent onto a finished API and spend months writing tool definitions by hand, then discover the model can claim to be anybody. Here, marking a method callable is enough — the platform publishes it, describes it, and injects the identity itself.
list_services → 41 callable methodsget_schema("lead") → 22 fields, 4 requiredcreate("lead", { … }) → lead_9f2aorgId + user ← injected by registry