Pre-Purchase Negotiation Brief

What to offer for this listing and the exact script to use.

Pre-Purchase Negotiation Brief

What to offer for this listing and the exact script to use.

At a glance


Price	$1.99 per run.
Tool name	`generate_negotiation_brief`
Scope	`reports:negotiation-brief`
Built for	Car Shopper

What it does

For a buyer considering a specific used-car listing. Returns 5-band verdict, fair offer + walk-away, leverage points (cheaper comps, price drops, days on lot), and a ready-to-use negotiation script. Use when a buyer has found ONE specific listed vehicle (with an asking price) and wants offer strategy or talking points to negotiate it down. For the value itself use Vehicle Valuation; to vet whether it is a good buy use Used Car Health Check.

Arguments

Argument		What it is	Example
`vin`	Required	17-character vehicle identification number.	`2T3F1RFV5SW550775`
`listed_price_usd`	Required	Asking price on the listing.	`28600`
`zip`	Required	ZIP where the user is shopping (anchors comparable alternatives).	`60606`
`vehicle_listed_miles`	Recommended	Actual mileage shown on the listing. Without this we estimate from year and the comparison is less accurate.	`24500`
`vehicle_dealer_name`	Recommended	Name of the dealer selling it. Lets us mention them by name in the negotiation script.	`Camelback Toyota`
`condition`	Optional	Visible condition from photos/description: Clean, Average, Rough.	`Clean`
`target_savings_pct`	Optional	How aggressive to be (decimal, e.g. 0.05 for 5%). Defaults to 0.05.	`0.05`

What comes back

Listed price vs fair market price
Stance verdict (buyer favors / at market / overpriced)
Your target offer + walk-away price
Leverage points (cheaper comps, price drops, days on lot)
Ready-to-use negotiation script
Cheaper alternatives within driving distance

Asking for it in a chat client

I'm looking at VIN 4T3R6RFV7MU015349 at Maple Grove Toyota, asking $36,903, 42,800 miles. Build me a negotiation brief for ZIP 60601.

Help me negotiate a 2024 Corolla listed at $19,999. VIN 5YFB4MDE8RP121789, 53,865 miles, ZIP 60601.

Running it from a backend

Grant an agent the reports:negotiation-brief scope, then call the tool over MCP:

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "generate_negotiation_brief",
    "arguments": {
      "vin": "2T3F1RFV5SW550775",
      "listed_price_usd": 28600,
      "zip": "60606"
    }
  }
}

See Server-side access for the token exchange and how to read the response.