> ## Documentation Index
> Fetch the complete documentation index at: https://developers.ttool.travel/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Every change to the APIs and these docs, by product.

Each entry is tagged with the product it affects: **Flights**, **Hotels**, **NDC** or **Platform** (changes that apply to every API, such as authentication, conventions and rate limits). Use the filter to see one product. Entries tagged **Breaking** need a change on your side; they're announced here before they reach production.

Subscribe to the RSS feed to hear about changes as they ship.

**28 October 2026**

Documentation

## New developer portal

* Docs reorganised into product tabs: Overview, Flights, Hotels and NDC.
* Added a hosted MCP server so AI coding tools can read these docs. See [Build with AI](https://developers.ttool.travel/build-with-ai.md).
* Added this changelog.

**28 October 2026**

Announced

## Hotels and NDC coming soon

The [Hotel API](https://developers.ttool.travel/hotels/overview.md) and [NDC API](https://developers.ttool.travel/ndc/overview.md) are in development. Both will use the same API user, authentication, base URL and wallet as Flights.

**October 2026**

Flight API v1.0

## First release

* International flights, one-way and round-trip, in Economy, PremiumEconomy, Business and First.
* Nine endpoints: [authenticate](https://developers.ttool.travel/api-reference/authenticate.md), [search](https://developers.ttool.travel/api-reference/search.md), [details](https://developers.ttool.travel/api-reference/details.md), [fare-brands](https://developers.ttool.travel/api-reference/fare-brands.md), [change-options](https://developers.ttool.travel/api-reference/change-options.md), [create order](https://developers.ttool.travel/api-reference/book.md), [issue](https://developers.ttool.travel/api-reference/issue.md), [order status](https://developers.ttool.travel/api-reference/get-order.md) and [cancel-hold](https://developers.ttool.travel/api-reference/cancel-hold.md).
* A compact [offer object](https://developers.ttool.travel/reference/offer-object.md): flat `price`, `journeys` and `segments`, IATA codes, local date-times, and price breakdown and baggage limited to the passenger types searched.
* A `dictionaries` block with carrier and airport names on search, details and change-options.
* Two-step purchase: create order (nothing booked or paid), then issue, which books the seats, charges the wallet and tickets in one call.
* Fare families where the airline sells them, applied by brand `code`.
* [On-hold bookings](https://developers.ttool.travel/guides/on-hold-bookings.md) with `holdOnly`, an explicit hold deadline, and release with cancel-hold.
* Payment from the agency wallet in USD.

**Not yet included:** multi-destination itineraries, fare rules (refund and change conditions), cancellation, refund and void of issued tickets, and passenger changes.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.