Kelley Blue Book

Kelley Blue Book (KBB) is the vehicle valuation and automotive information platform trusted by consumers, dealers, lenders, and OEMs since 1926. KBB provides REST APIs for new and used car values, pricing data, vehicle specifications, expert and consumer ratings, cost-of-ownership projections, fuel cost calculations, and dealer trade-in tools. The InfoDriver Web Service (IDWS) 4.0 delivers JSON over HTTPS authenticated via API key, and is licensed to B2B partners including automotive dealers, lenders, fleet operators, and industry data consumers. Values are updated twice monthly to reflect current market conditions.

Kelley Blue Book publishes 2 APIs on the APIs.io network. Tagged areas include Automotive, Vehicle Valuation, Car Pricing, Trade-In, and Vehicle Data.

Kelley Blue Book’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

25.9/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessApproval

2 APIs

AutomotiveVehicle ValuationCar PricingTrade-InVehicle DataDealer Tools

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 25.9/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.2 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 6.8 / 13

Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/kbb: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Kbb Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: kbb
name: Kelley Blue Book
description: 'Kelley Blue Book (KBB) is the vehicle valuation and automotive information platform trusted by consumers, dealers,
  lenders, and OEMs since 1926. KBB provides REST APIs for new and used car values, pricing data, vehicle specifications,
  expert and consumer ratings, cost-of-ownership projections, fuel cost calculations, and dealer trade-in tools. The InfoDriver
  Web Service (IDWS) 4.0 delivers JSON over HTTPS authenticated via API key, and is licensed to B2B partners including automotive
  dealers, lenders, fleet operators, and industry data consumers. Values are updated twice monthly to reflect current market
  conditions.

  '
type: Index
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kbb.png
url: https://raw.githubusercontent.com/api-evangelist/kbb/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.19'
tags:
- Automotive
- Vehicle Valuation
- Car Pricing
- Trade-In
- Vehicle Data
- Dealer Tools
apis:
- aid: kbb:idws
  name: InfoDriver Web Service (IDWS) 4.0
  description: 'RESTful API providing access to Kelley Blue Book vehicle data, values, and content. Endpoints cover vehicle
    information, new and used pricing, expert and consumer ratings and reviews, cost-of-ownership projections, fuel cost calculations,
    and vehicle specifications. Access is via api_key query string parameter under a B2B licensing agreement.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.kbb.com/
  baseURL: https://sandbox.api.kbb.com/ads
  tags:
  - Vehicle Data
  - Car Pricing
  - Vehicle Valuation
  - Ratings
  - Reviews
  properties:
  - type: Documentation
    url: https://developer.kbb.com/
  - type: Authentication
    url: https://developer.kbb.com/access
- aid: kbb:batch-vin
  name: Batch VIN Service
  description: 'High-volume vehicle identification number processing service for enriching large vehicle inventories with
    KBB data and valuations. Suited for lenders, fleet operators, and auction platforms.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.kbb.com/
  baseURL: https://developer.kbb.com/
  tags:
  - VIN
  - Batch Processing
  - Vehicle Inventory
  properties:
  - type: Documentation
    url: https://developer.kbb.com/
common:
- type: DomainSecurity
  url: security/kbb-domain-security.yml
- type: Website
  url: https://www.kbb.com/
- type: Documentation
  url: https://developer.kbb.com/
- type: GitHubOrg
  url: https://github.com/enovaauto/kbb
- type: LinkedIn
  url: https://www.linkedin.com/company/kelley-blue-book
- type: Blog
  url: https://b2b.kbb.com/resources/
- type: Pricing
  url: https://b2b.kbb.com/contact/
- type: StatusPage
  url: https://www.isitdownrightnow.com/kbb.com.html
- type: X
  url: https://x.com/KelleyBlueBook
- type: Plans
  url: plans/kbb-plans-pricing.yml
- type: RateLimits
  url: rate-limits/kbb-rate-limits.yml
- type: FinOps
  url: finops/kbb-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Kelley Blue Book

Kin Score

APIs 2

InfoDriver Web Service (IDWS) 4.0

Batch VIN Service

Pricing Plans 1

Kbb Plans Pricing