fOSReference

Live negotiation

fOS tools for real-time deal-making on a voice call — check whether a rate clears the margin floor (without ever revealing the floor), report the call outcome, and escalate to a human. These run on the voice surface.

Tools for the negotiate stage during a live call. They run on the voice surface — a tight, focused set for real-time deal-making.

ToolTypeMCPPurpose
check_rate_marginRead✗Whether a proposed rate clears the carrier's margin floor.
report_call_statusAction✗Report the call's outcome (progress, agreement, rejection).
escalate_to_humanAction✗Hand off to a human when the deal is complex or out of bounds.

None are exposed over MCP — live negotiation is a first-party voice capability.

Never reveal the floor

check_rate_margin validates a counter-offer against the carrier's cost-derived walk-away floor — but it never reveals the floor to the counterparty. fOS negotiates down toward the floor from a higher ask and escalates rather than going below it. This is a core guardrail — see Never reveal the floor and the bid recommendation.

Escalation

escalate_to_human is a first-class action, not a failure. When a deal needs authority beyond fOS's bounds, or gets complex, handing off to a human is the correct move — the loop continues with a person in the seat.

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