Overview

Kelley Blue Book (KBB) is one of America's most trusted vehicle valuation services, and its API gives access to car pricing, configurations, and detailed vehicle data. It is widely used in automotive dealership software, insurance tools, and car-buying platforms. Access requires applying for API credentials through the KBB developer portal.

Beginner Tip

KBB API access is not self-serve — you need to apply and be approved at developer.kbb.com. While waiting for approval, explore their documentation to understand the pricing models (trade-in value vs. retail value) so you can choose the right endpoint for your use case.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

book title and author
ISBN and publisher
cover image URL
page count
publication date
vehicle make and model

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "title": "The Great Gatsby",
  "authors": [
    "F. Scott Fitzgerald"
  ],
  "publishedDate": "1925-04-10",
  "pageCount": 218,
  "categories": [
    "Fiction"
  ],
  "imageLinks": {
    "thumbnail": "https://books.google.com/..."
  },
  "averageRating": 4
}

Field Reference

vehicleId KBB's unique identifier for the vehicle.
make Vehicle manufacturer (e.g., Toyota, Ford).
model Vehicle model name (e.g., Camry, F-150).
year Model year of the vehicle.
price Pricing object containing trade-in, private party, and suggested retail values.
trim Trim level of the vehicle (e.g., LE, XLE, Limited).

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "http://developer.kbb.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

401 Unauthorized Your API credentials are invalid or expired.
Verify your API key or OAuth token is current and correctly included in the Authorization header.
403 Forbidden Your account does not have access to the requested endpoint or data.
Check your approved access tier in the developer portal — some endpoints require a higher-tier partnership agreement.
404 Not Found The vehicle make, model, or year combination does not exist in the KBB database.
Use the lookup endpoints to find valid vehicle identifiers before querying for pricing data.

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS NO
Category Vehicle
Difficulty Intermediate
Listing details not endpoint-verified

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