For AI assistants

OttoQuest in your AI assistant

Ask Claude, ChatGPT or Cursor “find me a RAV4 under $30k near Austin that’s priced below market” or “what’s this VIN worth?” and it answers with OttoQuest’s live data. It connects through MCP (the Model Context Protocol) and signs in with your free OttoQuest account — no API key.

Server URL

https://ottoquest.com/api/mcp

Streamable HTTP. Sign-in is OAuth 2.1: your AI app opens an OttoQuest page where you enter your email and a 6-digit code, then you allow the app. Nothing else to set up.

Claude

Settings → Connectors → Add custom connector.
Name it OttoQuest and paste the server URL.
Click Connect, sign in and allow.

Claude Code:

claude mcp add --transport http ottoquest https://ottoquest.com/api/mcp

ChatGPT

Settings → Apps & Connectors → turn on Developer mode (Advanced).
Create a connector with the server URL and OAuth authentication.
Sign in and allow, then pick OttoQuest in a chat.

Cursor, VS Code and others

Add it to your MCP settings (e.g. ~/.cursor/mcp.json):

{
  "mcpServers": {
    "ottoquest": { "url": "https://ottoquest.com/api/mcp" }
  }
}

Try it out

“Show me the best deals on a 2021–2023 Tacoma within 100 miles of Denver.”
“What’s VIN 5YJ3E1EA7KF… worth with 40,000 miles in California?”
“Which used SUVs are dropping in price fastest this month?”
“Email me every day when a Model Y under $30k shows up near me.”

Tools

Tool	What it does
find_cars	Cars for sale at US dealers, with each car's market value and how far below it it's priced. Filter by make, model or trim, body, year, price, miles, place, below-market and clean history.
car_by_vin	One car by VIN: what it is, what it's worth at a mileage and state, reported history, recalls, the dealer's free CARFAX link, and every time it was listed or sold.
value_car	What a car is worth without a VIN: model or trim, year, mileage, state and history.
market_research	A model year's prices, miles and days listed by state; or the week's biggest price moves and where cars sit longest.
model_safety	NHTSA recalls, owner complaints and service bulletins for a model, by year and generation.
find_dealers	Dealers by name or town.
dealer_inventory	Every car a dealer has for sale, best deals first.
list_deal_alerts	Your deal alerts.
create_deal_alert	Email yourself new cars that match a search: as soon as available, daily or weekly.
delete_deal_alert	Remove one of your deal alerts.

The AI app only acts for the account you sign in with, and only with what you allow: it can read OttoQuest’s data and manage your deal alerts, not change your email or delete your account. To disconnect it, remove the connector in the app. No account yet? Signing in creates one — or start here.