CDK Global is the dominant U.S. dealer management system (DMS) provider, serving roughly 15,000 automotive dealerships with software covering sales, F&I, fixed operations, parts, CRM, and digital retail. CDK was spun out of ADP in 2014 and acquired by Brookfield Business Partners in July 2022 for $8.3B (taken private). The company operates the Fortellis platform — a developer marketplace and integration hub with 135+ published APIs, 425+ marketplace apps, 82,000+ dealer integrations, and 6.7B+ API transactions per year — exposing CDK DMS data to ISVs, OEMs, and third-party automotive systems. CDK suffered a major BlackSuit ransomware attack on June 19, 2024, paying ~$25M in bitcoin to restore service over roughly two weeks; the outage caused an estimated $605M in dealer losses and triggered numerous lawsuits.
APIs.json: https://raw.githubusercontent.com/api-evangelist/cdk-global/main/apis.yml
- Automotive
- Dealer Management
- DMS
- Auto Retail
- F&I
- Fixed Operations
- Parts
- CRM
- Digital Retail
- Marketplace
- Developer Platform
- Events
- Webhooks
- AsyncAPI
- Created: 2026-05-22
- Modified: 2026-05-23
Fortellis is CDK Global's open automotive commerce platform — an API gateway, app marketplace, and developer community that brokers data flow between dealerships, ISVs, OEMs, heavy-truck, and powersports systems. Fortellis publishes 135+ APIs, lists 425+ marketplace apps, and processes 6.7B+ API transactions per year across 82K+ dealer integrations.
- Human URL: https://fortellis.io
- Base URL:
https://api.fortellis.io
- Fortellis
- Marketplace
- Developer Platform
- APIs
- Automotive
- Documentation
- API Reference
- Sign Up
- Portal
- Community
- Marketplace
- GitHub Organization
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Service-appointments API for booking, querying, updating, and cancelling vehicle service appointments at a dealership service department. Used by scheduling systems integrating with CDK and other DMS providers via Fortellis.
- Human URL: https://apidocs.fortellis.io
- Base URL:
https://api.fortellis.io/sales/notification/v3
- Appointments
- Service
- Fixed Operations
- Scheduling
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- API Reference
- Source Repo
Booking-sessions API illustrating Fortellis's REST conventions: session creation, item management, store availability, and slot reservation for service scheduling workflows.
- Human URL: https://apidocs.fortellis.io
- Base URL:
https://api.fortellis.io/service/sessions/v4
- Booking Sessions
- Service
- Scheduling
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- API Reference
- Source Repo
Parts-store reference API exposing product info, sizing, and ping/health for dealership parts inventory and procurement integrations.
- Human URL: https://apidocs.fortellis.io
- Base URL:
https://api.fortellis.io/sales/parts-store/v47
- Parts
- Inventory
- Fixed Operations
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- API Reference
- Source Repo
Reference / tutorial API distributed by Fortellis for developers learning the platform's OpenAPI conventions, OAuth flows, and admin-API patterns.
- Human URL: https://apidocs.fortellis.io
- Base URL:
https://api.fortellis.io/data/v1/example/pet-adoption
- Reference
- Tutorial
- Developer Education
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Source Repo
Webhook contract that event-sink applications implement to receive asynchronous events from Fortellis Event Relay. Defines payload envelope, required headers (X-Request-Id, Fortellis-Event-Id, Authorization, Data-Owner-Id), and retry semantics for guaranteed delivery.
- Human URL: https://github.com/Fortellis/Fortellis-Event-Relay-Webhook
- Base URL:
https://api.fortellis.io/v1/webhook
- Events
- Webhooks
- Event Relay
- Asynchronous
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Source Repo
AsyncAPI specification for the Fortellis Event Relay data-plane proxy used by event sources to publish events into Fortellis for fan-out to subscribers.
- Events
- AsyncAPI
- Event Relay
- Publish-Subscribe
- AsyncAPI — AsyncAPI Specification
- Source Repo
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Hello World AsyncAPI reference distributed by Fortellis to teach the asynchronous API pattern, channel topology, and message envelope conventions used across Fortellis event APIs.
- AsyncAPI
- Reference
- Events
- Developer Education
- AsyncAPI — AsyncAPI Specification
- Source Repo
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Arazzo Workflows — Arazzo Specification
- Website
- Portal
- Documentation
- API Reference
- Sign Up
- Marketplace
- Community
- Authentication
- GitHub Organization
- SDK
- C L I
- V S Code Extension
- Git Hub Action
- Git Hub Action
- Spec Linter
- SDK
- SDK
- SDK
- Sample
- Sample
- Sample
- Sample
- Plans
- Rate Limits
- Fin Ops
- Vocabulary
- J S O N L D Context
- Spectral Rules
FN: Kin Lane Email: [email protected]