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How to set up and trigger the live AI-vs-AI phone negotiation with Vapi (or Retell/Bland) - two assistants, an outbound call, and transcript streaming into run state. Use for the voice close.
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SOC 職業分類に基づく
Tactics for buyer-side price negotiation - anchoring, concession strategy, trading for value, and walk-away discipline. Use whenever negotiating a quote over email or voice.
How to write a Request for Quote that gets fast, specific, comparable responses. Use when drafting supplier outreach.
The run state schema and how to compute and report the monitored result (dollars and percent saved, time elapsed). Use to read/write run state and to produce the hero metric the dashboard displays.
How to find and vet suppliers from the web plus a seed list, and produce a ranked, contactable list. Use at the start of a procurement run.
| name | vapi-voice |
| description | How to set up and trigger the live AI-vs-AI phone negotiation with Vapi (or Retell/Bland) - two assistants, an outbound call, and transcript streaming into run state. Use for the voice close. |
The WOW moment: the procurement assistant phones the supplier assistant and they negotiate live, with the transcript streaming to the dashboard.
supplier-simulator
persona + hidden floor. Attach to a phone number.negotiation-playbook, with dynamic variables for product, quantity, currentPrice,
target, walkAway./api/vapi/webhook, which appends rounds to state/run-<id>.json.curl -X POST https://api.vapi.ai/call \
-H "Authorization: Bearer $VAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"assistantId": "<procurement_assistant_id>",
"phoneNumberId": "<your_vapi_number_id>",
"customer": { "number": "<supplier_assistant_number>" },
"assistantOverrides": {
"variableValues": { "product": "office chairs", "quantity": 500,
"currentPrice": 80, "target": 74, "walkAway": 80 }
}
}'
On end-of-call-report, parse the transcript for the final agreed price and terms; write a
channel: "voice" round + voiceFinalPrice to state; hand to quote-analyst.