# Amadeus Flight Upsell Offers

> Amadeus Flight Upsell Offers is a paid API for AI agents from stabletravel.dev, paid per call via MPP or x402, $0.0324/call, status unknown (last checked 2026-09-13).

Retrieves available upsell offers (cabin upgrades, ancillaries, bundles) for an existing flight booking or itinerary.

## Facts

- Endpoint: POST https://stabletravel.dev/api/flights/upsell
- Price: $0.0324/call
- Payment: MPP, x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/amadeus-17c482da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A_ykOaUJdrvg9gfDPUOe6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability amadeus-17c482da -d '<json body>'
```

Example prompt: I've already got a flight booked — flight order ID FL-8842 — can you pull up any available upsell offers like seat upgrades or fare bundle improvements for it?

## When to prefer this

Use this endpoint when you already have a flight offer or order and want to present the traveler with upgrade or add-on options before or after booking. Prefer this over a fresh flight search when you need upsell-specific offers tied to an existing itinerary rather than new flight options.

## Known failure modes

- Invalid or expired flight offer/order ID returns 400 or 404
- No upsell offers available for the given flight returns empty offers array
- Malformed request body returns 400 Bad Request
- Authentication or payment failure returns 401/402
- Amadeus upstream service unavailable returns 503

## How this service works

Pay-per-request access to flights, award availability, hotels, activities, and transfers. No auth, no subscriptions.

## Output

Returns a list of upsell offer objects for the given flight, including upgraded fare families, cabin class options, ancillary services, and associated pricing for each upsell option.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [
   {
    "id": "1",
    "type": "flight-offer",
    "price": {
     "total": "500.00",
     "currency": "USD"
    }
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/amadeus-17c482da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stabletravel.dev](https://www.zero.xyz/host/stabletravel.dev/llms.txt)