This listing is posted by the APIs.io catalog. APIs.io does not own or sell this API; you get access from the provider, ZoomInfo.
The ZoomInfo Authentication API authenticates client access requests using a JSON Web Token (JWT). A client sends valid ZoomInfo user credentials to the Authenticate endpoint, and on success the response body returns a JWT access token. The token is good for 60 minutes from the time the response was generated. The provider advises against generating a new JWT with every request and recommends refreshing it every 55 minutes to keep the session active. Public libraries for Java, Python and NodeJS offer other ways to authenticate.
Who it suits: developers and operations teams who need to connect to ZoomInfo's B2B go-to-market data (contacts, companies, buyer-intent signals) and want a clear first step for getting a token.
Published for it: OpenAPI, Documentation, SDKs, JSON Schema, JSON Structure, JSON-LD, Examples, APIs.json and Arazzo.
Kin Score: 86.6 (exemplar band). Agent Readiness: 65.8 (agent-ready band), scored 2026-10-17.
Base URL: https://api.zoominfo.com
Pricing: set by the provider. The provider's access model is listed as freemium with self-serve signup.
Condition: a live hosted API, listed in the APIs.io catalog.
Catalog listing: https://apis.io/apis/zoominfo/zoominfo-authentication-api/ Provider: https://www.zoominfo.com/