# Hopper

**Canonical:** https://apis.io/providers/hopper-com/  
**Website:** https://www.hopper.com  
**APIs profiled:** 5

Hopper is a Boston- and Montreal-based travel booking platform and B2B travel fintech provider serving more than 120 million travelers globally. Its consumer app aggregates flights, hotels, rental cars, and homes alongside proprietary price prediction and a family of "for any reason" fintech ancillaries — Price Freeze, Cancel For Any Reason (CFAR), Change For Any Reason, Leave For Any Reason, and Disruption Guarantee. Through its B2B division, Hopper Technology Solutions (HTS), the company licenses those same fintech ancillaries, agentic AI customer service (HTS Assist), white-label travel agency products (HTS Stays, HTS Cars, HTS Packages), and travel loyalty portals to airlines, banks, and travel providers. HTS exposes a documented OAuth2-secured REST API — the HTS Airline API v1.1 — for embedding CFAR and Disruption Guarantee contracts in airline booking flows, with OpenAPI-generated SDKs for Java, .NET, Angular, and iOS, plus a JavaScript SDK for hotel price-freeze integration.

## Kin Score — 25.3 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 25.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 57.4 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 35.9 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (5)

- **Hopper Analytics API** — In order to measure and continuously improve HTS Ancillaries performance, specific events occurring during a customer session can be sent by the partner airlines using some dedi...
- **Hopper Authentication API** — 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` shou...
- **Hopper Cancel For Any Reason (CFAR) API** — **What is Cancel For Any Reason?** Cancel For Any Reason (CFAR) enables airlines to offer refundability as an ancillary with HTS powering the dynamic pricing and supporting the ...
- **Hopper Disruption Guarantee (DG) API** — **What is Disruption Guarantee?** Disruption Guarantee (DG) offers a premium disruption assistance service to customers in case of flight disruption, including rebooking options...
- **Hopper Sessions API** — Hopper uses a unique ID to correlate API calls and events produced by a user's interaction with an airline application. The duration of the user's interactions is called a "sess...

## Agentic access (1)

- **Hopper Com Agentic Access** — 23 operations · 18 acting

## Security (2)

- **Hopper Com Authentication** — apiKey/http · 2 schemes
- **Hopper Com Domain Security** — TLSv1.3 · DNSSEC · DMARC

## Tags

Travel, Travel Fintech, Price Prediction, Cancel For Any Reason, Disruption Guarantee, Price Freeze, Airlines, Hotels, Car Rental, Vacation Rentals, Ancillary Revenue, B2B, Loyalty, Agentic AI

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/hopper-com/). Scores are computed from the provider's own public artifacts under a published rubric.