Cars.com vs Kelley Blue Book for AI agents
Cars.com is a US car marketplace for dealer listings; it offers no public developer or listings API. Kelley Blue Book is a licensed REST service for Kelley Blue Book vehicle values and VIN decoding; it does not list cars for sale.
The short answer
- Cars.com: Shopping on the website itself; there is no sanctioned programmatic route for third-party developers.
- Kelley Blue Book: Businesses that need licensed Kelley Blue Book values inside their own systems, not listing search.
Side by side
| Cars.com | Kelley Blue Book | |
|---|---|---|
| Searches | – | Vehicle values by VIN or configuration (year, make, model, trim, options, mileage) and ZIP code. |
| Returns | – | New and used values such as fair purchase price, private party, trade-in, auction and lending values, plus ratings and reviews. |
| Before the first call | – | A signed data license with Cox Automotive (Master Data License plus product terms), arranged through a contact form. |
| Limits on keeping or showing results | Site terms bar robots, crawlers and scraping, and any reuse or redisplay of the service without permission. | Industry internal-use terms allow internal use only: no sharing with third parties, no posting on public websites, no modifying the data, and a KBB copyright notice must accompany it. |
| Coverage | United States. | United States. |
Where Openpath fits
Openpath has no car listings yet. Cars are on its roadmap, from sellers and dealers who list them themselves. Get listed.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Cars.com, read on October 15, 2026:
- cars.com/contact: “Become a Cars.com car dealer”
- cars.com/about/terms: “web robots, crawlers or spiders to access, query or otherwise collect information or scrape data from the Site”
- cars.com/about/terms: “Use of the Site or any portion thereof on any other website is expressly prohibited without prior written permission from Cars Commerce.”
Kelley Blue Book, read on October 15, 2026:
- b2b.kbb.com/industry-solutions/info-driver-web-service-idws: “Provide your clients access to the industry relevant valuations they require with InfoDriver℠ Web Service (IDWS).”
- b2b.kbb.com/industry-solutions/info-driver-web-service-idws: “Integrate Kelley Blue Book Values into your system or application”
- coxautoinc.com/terms/wp-content/uploads/sites/3/Kelley-Blue-Book-InfoDriver%E2%80%93Industry-Internal-Use-Additional-Terms.pdf: “Licensee may use InfoDriver and the Licensed Data only for internal use”
- coxautoinc.com/terms/wp-content/uploads/sites/3/Kelley-Blue-Book-InfoDriver%E2%80%93Industry-Internal-Use-Additional-Terms.pdf: “post or otherwise make accessible any Licensed Data on any website”
- coxautoinc.com/terms/wp-content/uploads/sites/3/Kelley-Blue-Book-InfoDriver%E2%80%93Industry-Internal-Use-Additional-Terms.pdf: “for a specific vehicle identified by a VIN or configuration (i.e.: year, make, model, trim, optional equipment, and mileage)”