# Hopper Authentication API

**Canonical:** https://apis.io/apis/hopper-com/hopper-com-authentication-api/  
**Provider:** Hopper — https://apis.io/providers/hopper-com/  
**Base URL:** https://airlines-api.hopper.com/airline/v1.1  
**Documentation:** https://github.com/hopper/hc-airlines-java

Hopper Authentication API is one of 5 APIs that [Hopper](https://apis.io/providers/hopper-com/) 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 and API documentation.

This API is authenticated with OAuth 2, Client Credentials grant.\ Clients should use their `client_id` and `client_secret` to obtain an `access_token`.\ The `access_token` should be included in every request, as a `Bearer` token on an `Authorization` header.\ Note that `access_token`s eventually expire, requiring a new token to be fetched. see [authentication](#tag/Authentication)

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/hopper-com/refs/heads/main/openapi/hopper-com-authentication-api-openapi.yml
- **Documentation** — https://github.com/hopper/hc-airlines-java
- **SDKs** — https://github.com/hopper/hc-airlines-java
- **SDKs** — https://github.com/hopper/hts-airlines-dotnet
- **SDKs** — https://github.com/hopper/hc-airlines-angular

## Other Hopper APIs (4)

- [Hopper Analytics API](https://apis.io/apis/hopper-com/hopper-com-analytics-api/)
- [Hopper Cancel For Any Reason (CFAR) API](https://apis.io/apis/hopper-com/hopper-com-cancel-for-any-reason-cfar-api/)
- [Hopper Disruption Guarantee (DG) API](https://apis.io/apis/hopper-com/hopper-com-disruption-guarantee-dg-api/)
- [Hopper Sessions API](https://apis.io/apis/hopper-com/hopper-com-sessions-api/)

## Tags

Authentication

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