Cox Automotive

Cox Automotive is one of the world's largest providers of products and services spanning the automotive ecosystem, operating a portfolio of brands that includes Manheim (wholesale vehicle auctions and remarketing), Kelley Blue Book (vehicle valuations and editorial data), Autotrader, Dealertrack (DMS, registration and titling, credit applications), vAuto, VinSolutions, Xtime, Dealer.com, HomeNet and Esntial. Its public API surface is split across several developer properties: the Kelley Blue Book Developer Portal (developer.kbb.com) publishes Swagger 2.0 contracts for the IDWS 4.0 vehicle and editorial services, the Advertising Data API, the Instant Cash Offer API and the Batch VIN API; the Manheim Developer Portal (developer.manheim.com) documents a hypermedia REST suite covering auctions, inventory, marketplace offerings, valuations, condition reports, images, users and a publish/subscribe event notification service; and the Cox Automotive Integration Platform / API Storefront (developer.coxautoinc.com) fronts the partner-gated catalogue of more than seventy runtime services visible on the public Cox Automotive API status page. Access to every environment is granted after a review by a Cox Automotive account representative, with keys issued through the Boomi/Mashery gateway.

Cox Automotive publishes 5 APIs on the APIs.io network, including Kelley Blue Book IDWS 4.0 Vehicle Service, Kelley Blue Book IDWS 4.0 Editorial Service, Kelley Blue Book Advertising Data API, and 2 more. Tagged areas include Automotive, Vehicle Data, Vehicle Valuations, Auctions, and Dealer Software.

The Cox Automotive catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Cox Automotive’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 30 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.2/100 developing Agent 30/100 agent ready Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0
5 APIs
AutomotiveVehicle DataVehicle ValuationsAuctionsDealer SoftwareAutomotive RetailVIN DecodingInventory ManagementRemarketingEventWebhook

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0
Composite quality — 40.2/100 · developing
Contract Quality 11.1 / 23
Developer Ergonomics 7.2 / 18
Access Clarity 3.1 / 18
Operational Transparency 6.8 / 12
Contract Governance 2.0 / 11
Discoverability 6.7 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 30/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/cox-automotive: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 8

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

Kelley Blue Book IDWS 4.0 Vehicle Service

InfoDriver Web Service (IDWS) 4.0 Vehicle Service — a RESTful Kelley Blue Book API returning vehicle configuration, makes, models, model years, trims, body styles, options, spec...

Kelley Blue Book IDWS 4.0 Editorial Service

InfoDriver Web Service (IDWS) 4.0 Editorial Service — Kelley Blue Book consumer ratings, consumer reviews, expert ratings, expert reviews and Top Ten lists for a vehicle, return...

Kelley Blue Book Advertising Data API

Vehicle data for building dynamic automotive advertising — pricing, cost-to-own, expert and consumer ratings and reviews, vehicle links, fuel cost, specifications, MPG and award...

Kelley Blue Book Instant Cash Offer (ICO) API

Produces a Kelley Blue Book Instant Cash Offer for a vehicle. Vehicle configuration lookups (year, make, model, trim, transmission, engine, drivetrain, colour, options), licence...

Kelley Blue Book Batch VIN API

Asynchronous batch VIN decoding and valuation. Submit a batch job, poll its status, and retrieve the input and output files, or cancel a running job. Requires both a Mashery api...

Manheim Hypermedia API Suite

Manheim's third-party integration surface — a suite of hypermedia (href-linked) JSON REST APIs over the wholesale vehicle remarketing lifecycle: auction locations, inventory uni...

Manheim Event Notifications

Publish/subscribe business-event notification service for the Manheim auction lifecycle. Consumers register a subscriber, create subscriptions with resource, type, text (VIN) or...

Cox Automotive Integration Platform (API Storefront)

The company-wide API storefront and integration platform fronting Cox Automotive's partner APIs — Dealertrack credit application, registration and titling, DealXG and Deal Push,...

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Cox Automotive Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cox Automotive Rate Limits

2 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Cox Automotive Manheim Events Webhooks

ASYNCAPI

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Cox Automotive Authentication

apiKey/oauth2 · 3 schemes

SECURITY

Cox Automotive Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Cox Automotive Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Cox Automotive Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Cox Automotive Agentic Access

100 operations · 24 acting

100 operations · 24 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 X-MCPServerCandidate
X-MCPServerCandidate
 AgenticAccess
AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Conformance
Conformance
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 DataModel
DataModel
 Webhooks
Webhooks
 ErrorCodes
ErrorCodes

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Postman
Postman
 Packages
Packages

Access & Security 6

Authentication, authorization, and security posture

Security
Security
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: cox-automotive
name: Cox Automotive
description: 'Cox Automotive is one of the world''s largest providers of products and services spanning the automotive ecosystem,
  operating a portfolio of brands that includes Manheim (wholesale vehicle auctions and remarketing), Kelley Blue Book (vehicle
  valuations and editorial data), Autotrader, Dealertrack (DMS, registration and titling, credit applications), vAuto, VinSolutions,
  Xtime, Dealer.com, HomeNet and Esntial. Its public API surface is split across several developer properties: the Kelley
  Blue Book Developer Portal (developer.kbb.com) publishes Swagger 2.0 contracts for the IDWS 4.0 vehicle and editorial services,
  the Advertising Data API, the Instant Cash Offer API and the Batch VIN API; the Manheim Developer Portal (developer.manheim.com)
  documents a hypermedia REST suite covering auctions, inventory, marketplace offerings, valuations, condition reports, images,
  users and a publish/subscribe event notification service; and the Cox Automotive Integration Platform / API Storefront (developer.coxautoinc.com)
  fronts the partner-gated catalogue of more than seventy runtime services visible on the public Cox Automotive API status
  page. Access to every environment is granted after a review by a Cox Automotive account representative, with keys issued
  through the Boomi/Mashery gateway.'
image: https://www.coxautoinc.com/wp-content/uploads/2025/09/CAI-1200x628-1.png
url: https://raw.githubusercontent.com/api-evangelist/cox-automotive/refs/heads/main/apis.yml
x-type: company
x-source: harvest:absent-parent
specificationVersion: '0.20'
created: '2026-09-13'
modified: '2026-09-13'
tags:
- Automotive
- Vehicle Data
- Vehicle Valuations
- Auctions
- Dealer Software
- Automotive Retail
- VIN Decoding
- Inventory Management
- Remarketing
- Event
- Webhook
tags_raw:
- automotive
- vehicle-data
- vehicle-valuations
- auctions
- dealer-software
- automotive-retail
- vin-decoding
- inventory-management
- remarketing
- events
- webhooks
apis:
- aid: cox-automotive:kbb-idws-vehicle
  name: Kelley Blue Book IDWS 4.0 Vehicle Service
  description: InfoDriver Web Service (IDWS) 4.0 Vehicle Service — a RESTful Kelley Blue Book API returning vehicle configuration,
    makes, models, model years, trims, body styles, options, specifications, typicals, CPO programs, cost-to-own and Blue
    Book values, plus VIN lookup. API-key authenticated through the Cox Automotive Mashery gateway.
  humanURL: https://developer.kbb.com/idws/1-Default
  baseURL: https://idws.datasolutions.coxautoinc.com
  position: Producing
  tags:
  - Vehicle Data
  - Vehicle Valuations
  - VIN Decoding
  - Automotive
  properties:
  - type: OpenAPI
    url: openapi/cox-automotive-kbb-idws-vehicle-openapi.yml
  - type: Documentation
    url: https://developer.kbb.com/idws/1-Default
  - type: APIReference
    url: https://developer.kbb.com/idws/99-Swagger
  - type: Postman
    url: https://god.gw.postman.com/run-collection/1195870-3ff750f7-69e7-49e2-bbaa-e42fecb49939
  - type: Overlay
    url: overlays/cox-automotive-kbb-idws-vehicle-overlay.yaml
- aid: cox-automotive:kbb-idws-editorial
  name: Kelley Blue Book IDWS 4.0 Editorial Service
  description: InfoDriver Web Service (IDWS) 4.0 Editorial Service — Kelley Blue Book consumer ratings, consumer reviews,
    expert ratings, expert reviews and Top Ten lists for a vehicle, returned as JSON and authenticated with a Mashery api_key
    query parameter.
  humanURL: https://developer.kbb.com/idws/1-Default
  baseURL: https://idws.datasolutions.coxautoinc.com
  position: Producing
  tags:
  - Vehicle Data
  - Automotive
  - Reviews
  properties:
  - type: OpenAPI
    url: openapi/cox-automotive-kbb-idws-editorial-openapi.yml
  - type: Documentation
    url: https://developer.kbb.com/idws/1-Default
  - type: APIReference
    url: https://developer.kbb.com/idws/98-Swagger-EDT
  - type: Overlay
    url: overlays/cox-automotive-kbb-idws-editorial-overlay.yaml
- aid: cox-automotive:kbb-advertising-data
  name: Kelley Blue Book Advertising Data API
  description: Vehicle data for building dynamic automotive advertising — pricing, cost-to-own, expert and consumer ratings
    and reviews, vehicle links, fuel cost, specifications, MPG and awards. Supports CORS, gzip, and both URL and Accept-header
    versioning.
  humanURL: https://developer.kbb.com/data/1-Default
  baseURL: https://sandbox.api.kbb.com/ads
  position: Producing
  tags:
  - Vehicle Data
  - Advertising
  - Automotive
  properties:
  - type: OpenAPI
    url: openapi/cox-automotive-kbb-advertising-data-openapi.yml
  - type: Documentation
    url: https://developer.kbb.com/data/1-Default
  - type: APIReference
    url: https://developer.kbb.com/data/99-Swagger
  - type: Overlay
    url: overlays/cox-automotive-kbb-advertising-data-overlay.yaml
- aid: cox-automotive:kbb-instant-cash-offer
  name: Kelley Blue Book Instant Cash Offer (ICO) API
  description: Produces a Kelley Blue Book Instant Cash Offer for a vehicle. Vehicle configuration lookups (year, make, model,
    trim, transmission, engine, drivetrain, colour, options), licence-plate-to-VIN lookup, prospect creation with history,
    condition and contact information, and offer creation and retrieval. Responses use a meta/data envelope with numeric Cox
    Automotive result codes.
  humanURL: https://developer.kbb.com/ico/1-Default
  baseURL: https://api.kbb.com/ico/v1
  position: Producing
  tags:
  - Vehicle Valuations
  - Automotive Retail
  - Trade-In
  - Automotive
  properties:
  - type: OpenAPI
    url: openapi/cox-automotive-kbb-instant-cash-offer-openapi.yml
  - type: Documentation
    url: https://developer.kbb.com/ico/1-Default
  - type: APIReference
    url: https://developer.kbb.com/ico/99-Swagger
  - type: ErrorCatalog
    url: errors/cox-automotive-error-codes.yml
  - type: Overlay
    url: overlays/cox-automotive-kbb-instant-cash-offer-overlay.yaml
- aid: cox-automotive:kbb-batch-vin
  name: Kelley Blue Book Batch VIN API
  description: Asynchronous batch VIN decoding and valuation. Submit a batch job, poll its status, and retrieve the input
    and output files, or cancel a running job. Requires both a Mashery api_key and an OAuth-style bearer token obtained from
    the API's own /Token endpoint.
  humanURL: https://developer.kbb.com/batchvin/1-Default
  baseURL: https://sandbox.api.kbb.com/idbv
  position: Producing
  tags:
  - VIN Decoding
  - Vehicle Data
  - Batch Processing
  - Automotive
  properties:
  - type: OpenAPI
    url: openapi/cox-automotive-kbb-batch-vin-openapi.yml
  - type: Documentation
    url: https://developer.kbb.com/batchvin/1-Default
  - type: APIReference
    url: https://developer.kbb.com/batchvin/99-Swagger
  - type: Overlay
    url: overlays/cox-automotive-kbb-batch-vin-overlay.yaml
- aid: cox-automotive:manheim
  name: Manheim Hypermedia API Suite
  description: 'Manheim''s third-party integration surface — a suite of hypermedia (href-linked) JSON REST APIs over the wholesale
    vehicle remarketing lifecycle: auction locations, inventory units and consignments, marketplace offerings, searches, purchases,
    transactions and titles, Manheim Market Report valuations and forecasts, vehicle condition reports, images, and user profiles,
    contexts and preferences. OAuth 2.0 client-credentials and resource-owner-password grants through the Mashery gateway.
    Documented publicly; access granted per environment after review.'
  humanURL: https://developer.manheim.com/
  baseURL: https://api.manheim.com
  position: Producing
  tags:
  - Auctions
  - Remarketing
  - Vehicle Valuations
  - Inventory Management
  - Automotive
  properties:
  - type: DeveloperPortal
    url: https://developer.manheim.com/
  - type: Documentation
    url: https://developer.manheim.com/pages/hypermedia.html
  - type: APIReference
    url: https://developer.manheim.com/apis/marketplace/valuations.html
  - type: Authentication
    url: https://developer.manheim.com/pages/authentication.html
  - type: GettingStarted
    url: https://developer.manheim.com/pages/accessAndEnvironments.html
  - type: RateLimits
    url: https://developer.manheim.com/pages/apiUsage.html
  - type: Support
    url: https://developer.manheim.com/support/help.html
- aid: cox-automotive:manheim-events
  name: Manheim Event Notifications
  description: Publish/subscribe business-event notification service for the Manheim auction lifecycle. Consumers register
    a subscriber, create subscriptions with resource, type, text (VIN) or richFilter criteria, and receive NOUN.VERB events
    (for example UNIT.CREATED, CONSIGNMENT.CREATED) delivered to their own callback, optionally expanded with the referenced
    API response. Superseded for new onboarding by Eventer on the Cox Automotive API Storefront.
  humanURL: https://developer.manheim.com/apis/events/index.html
  baseURL: https://api.manheim.com
  position: Producing
  tags:
  - Event
  - Webhook
  - Auctions
  - Automotive
  tags_raw:
  - Events
  - Webhooks
  - Auctions
  - Automotive
  properties:
  - type: Webhooks
    url: asyncapi/cox-automotive-manheim-events-webhooks.yml
  - type: Documentation
    url: https://developer.manheim.com/apis/events/index.html
  - type: APIReference
    url: https://developer.manheim.com/apis/events/subscriptions.html
- aid: cox-automotive:integration-platform
  name: Cox Automotive Integration Platform (API Storefront)
  description: The company-wide API storefront and integration platform fronting Cox Automotive's partner APIs — Dealertrack
    credit application, registration and titling, DealXG and Deal Push, Eventer publishing, MMR and MMR batch, listings search,
    recon inventory, quotes, orders, purchases, condition reports, taxonomy, expander, service scheduling and digital retailing
    among more than seventy runtime services listed on the public status page. Product catalogue and reference are behind
    an Okta / Entra ID sign-in; access is requested through the storefront.
  humanURL: https://developer.coxautoinc.com/
  baseURL: https://api.coxautoinc.com
  position: Producing
  tags:
  - Dealer Software
  - Automotive Retail
  - Automotive
  properties:
  - type: DeveloperPortal
    url: https://developer.coxautoinc.com/
  - type: SignUp
    url: https://developer.coxautoinc.com/signup
  - type: Login
    url: https://developer.coxautoinc.com/login
  - type: StatusPage
    url: https://coxautoapi.statuspage.io/
common:
- type: Website
  url: https://www.coxautoinc.com/
- type: DeveloperPortal
  url: https://developer.coxautoinc.com/
- type: Documentation
  url: https://developer.manheim.com/
- type: APIReference
  url: https://developer.kbb.com/
- type: GettingStarted
  url: https://developer.manheim.com/pages/accessAndEnvironments.html
- type: Support
  url: https://developer.manheim.com/support/help.html
- type: Blog
  url: https://www.coxautoinc.com/insights/
- type: GitHubOrganization
  url: https://github.com/Cox-Automotive
- type: SignUp
  url: https://developer.coxautoinc.com/signup
- type: Login
  url: https://developer.coxautoinc.com/login
- type: TermsOfService
  url: https://www.coxautoinc.com/terms/
- type: PrivacyPolicy
  url: https://www.coxautoinc.com/privacy-statement/
- type: StatusPage
  url: https://coxautoapi.statuspage.io/
- type: Postman
  url: https://god.gw.postman.com/run-collection/1195870-3ff750f7-69e7-49e2-bbaa-e42fecb49939
- type: Security
  url: https://www.coxautoinc.com/responsible-disclosure
- type: SecurityTxt
  url: well-known/cox-automotive-security.txt
- type: WellKnown
  url: well-known/cox-automotive-well-known.yml
- type: VulnerabilityDisclosure
  url: security/cox-automotive-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/cox-automotive-domain-security.yml
- type: Authentication
  url: authentication/cox-automotive-authentication.yml
- type: OAuthScopes
  url: scopes/cox-automotive-scopes.yml
- type: Conventions
  url: conventions/cox-automotive-conventions.yml
- type: Conformance
  url: conformance/cox-automotive-conformance.yml
- type: ErrorCatalog
  url: errors/cox-automotive-problem-types.yml
- type: Lifecycle
  url: lifecycle/cox-automotive-lifecycle.yml
- type: DataModel
  url: data-model/cox-automotive-data-model.yml
- type: RateLimits
  url: rate-limits/cox-automotive-rate-limits.yml
- type: Plans
  url: plans/cox-automotive-plans-pricing.yml
- type: Packages
  url: packages/cox-automotive-packages.yml
- type: LLMsTxt
  url: llms/cox-automotive-llms.txt
- type: Webhooks
  url: asyncapi/cox-automotive-manheim-events-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: X-MCPServerCandidate
  url: mcp/cox-automotive-mcp.yml
- type: AgenticAccess
  url: agentic-access/cox-automotive-agentic-access.yml
- type: Sandbox
  url: sandbox/cox-automotive-sandbox.yml
- type: ErrorCodes
  url: errors/cox-automotive-error-codes.yml
- type: Overlay
  url: overlays/cox-automotive-kbb-idws-vehicle-overlay.yaml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-09-13'
  status: enriched
  artifacts_added: 41
  pass: local-v3

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