# Zest Authentication API

**Canonical:** https://apis.io/apis/zest/zest-authentication-api/  
**Provider:** Zest — https://apis.io/providers/zest/  
**Base URL:** https://public-api.zestequity.com  
**Documentation:** https://docs.zestequity.com

Zest Authentication API is one of 8 APIs that [Zest](https://apis.io/providers/zest/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authentication. The published artifact set on APIs.io includes an OpenAPI specification, an API reference, and a getting-started guide.

OAuth 2.0 JWT-Bearer assertion grant. Exchange a partner-signed JWT for a short-lived bearer access token, then send that token in the Authorization header on every partner API call.

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/zest/refs/heads/main/openapi/zest-authentication-api-openapi.yml
- **APIReference** — https://docs.zestequity.com/api-reference/openapi.json
- **GettingStarted** — https://docs.zestequity.com/quickstart
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/zest/refs/heads/main/apis.yml

## Other Zest APIs (7)

- [Zest Contracts API](https://apis.io/apis/zest/zest-contracts-api/)
- [Zest Investors API](https://apis.io/apis/zest/zest-investors-api/)
- [Zest SPV Requests API](https://apis.io/apis/zest/zest-spv-requests-api/)
- [Zest Subscription Forms API](https://apis.io/apis/zest/zest-subscription-forms-api/)
- [Zest Subscription Fundings API](https://apis.io/apis/zest/zest-subscription-fundings-api/)
- [Zest Subscriptions API](https://apis.io/apis/zest/zest-subscriptions-api/)
- [Zest System API](https://apis.io/apis/zest/zest-system-api/)

## Tags

Authentication

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/zest/zest-authentication-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/zest/.