# G-P Authentication API

**Canonical:** https://apis.io/apis/g-p/g-p-authentication-api/  
**Provider:** G-P — https://apis.io/providers/g-p/  
**Base URL:** https://api.g-p.com/api  
**Documentation:** https://developer.g-p.com/apis/authentication-1/docs

G-P Authentication API is one of 3 APIs that [G-P](https://apis.io/providers/g-p/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authentication and Access Tokens. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

Securely verifies client identity and issues access tokens via OAuth 2.0 client credentials grant for authenticating requests to all G-P APIs.

## Machine-readable artifacts (3)

- **Documentation** — https://developer.g-p.com/apis/authentication-1/docs
- **OpenAPI** — https://developer.g-p.com/apis/authentication-1/docs
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/g-p/refs/heads/main/apis.yml

## Other G-P APIs (2)

- [G-P EOR API](https://apis.io/apis/g-p/g-p-eor-api/)
- [G-P Contractor API](https://apis.io/apis/g-p/g-p-contractor-api/)

## Tags

Authentication, Access Tokens

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