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| Date | Description |
|---|---|
| 9 June 2021 | Added Booking concepts – supplier communications |
| 9 June 2021 | Added Booking concepts – working with age bands section |
| 4 June 2021 | Added premium viatorUniqueContent element to ActiveProduct |
| 27 May 2021 | Added Booking-concepts – Per-person and unit pricing section |
| 21 May 2021 | Added reviews element to responses of product content endpoints |
| 14 May 2021 | Added Age-bands section to Booking concepts - Booking questions section |
| 5 May 2021 | Updated Conditional booking questions table in Booking concepts - Booking questions section |
| 25 Mar 2021 | Added v1 endpoints for affiliate partners |
Previous updates: See Update log
The Viator Partner API v2 comprises a set of endpoints that can support the operation of a fully-featured tours and experiences booking website or application; or, it can be integrated with your existing travel-booking software.
The API exposes a variety of services that allow the retrieval of all product details, such as descriptive text and structured metadata, pricing, terms and conditions, photos and reviews. This data can either be ingested and managed on your local system, or calls can be made in real time to retrieve content in response to your users' activity on your systems.
The API allows product content, pricing and availability data to be retrieved in bulk or queried in real-time, it can perform pricing calculations according to the number and type of traveler and product option combinations available, and it supports availability and pricing holds as part of its booking and booking-cancellation functionality.
The Viator Partner-API is a designed for use by organizations partnered with Viator as Affiliate partners or Merchant partners.
Affiliate partners have full access to the areas of the API relating to content, but sales of Viator products must be carried out on the Viator site itself.
When a customer wishes to book a product from an affiliate's site, they are instead redirected to the relevant product page on viator.com via a unique URL in order to complete the purchase. Once on the Viator site, a cookie is set such that all transactions will accrue a commission for that partner until the cookie expires.
Purchases of products originating from the affiliate's site are recorded and a commission on these sales is paid periodically.
For more information on this partner type, see: Viator's Affiliate API Solution
The merchant partner relationship is one in which the partner is the merchant of record; i.e., the partner takes full responsibility for all financial records and transactions carried out by their users, as well as providing customer support with regard to providing general assistance, processing cancellations and refunds, and liaising between suppliers and customers when the need to communicate arises.
For more information on this partner type, see: Viator's Merchant API Solution
The Viator Partner-API v2.0 is a fully-redesigned system with regard to our previous API products. It includes all key fuctionality available in previous versions, but now provides nearly fully-structured data elements, and a more modern, concise and easily-understandable interface.
In addition, we have made significant improvements to performance across all functions of the API, and particularly in the area of product content and availability data ingestion.
Data ingestion has been greatly improved over previous versions of this API. Now, partners need only perform a single initial ingestion of data; then, only new and updated product content, availability and pricing information is retrieved as a 'delta update' as it becomes available.
In addition:
Improvements to availability schedule ingestion performance and usability have been achieved:
Availability is now communicated by providing an overall schedule season and specifying unavailable dates instead of available dates, a significantly more compact format that improves transfer speeds and minimizes storage needs
Availability and pricing information is given on a days-of-the-week basis, which can help with filtering and improving visibility of product availability for customers.
Information about special pricing periods that may be running throughout a product's seasons is included and is easy to interpret, allowing partners to surface promotions to customers.
Accurate pricing and applicability information for products that have 'per unit' (group) pricing is now included in the availability & pricing response; whereas support for this pricing model was limited in previous versions of this API. This allows partners to improve pricing exposure for these products.
Providing structured content is a major focus of this API. Product information that was previously stored as natural-language descriptions in a single, lengthy field is now represented in intuitively-structured, machine-interpretable schemata that empowers partners to apply finely-grained merchandising control, including:
The real-time availability check endpoint:
The booking workflow now includes an optional booking-hold step, which allows you greater predictability of a successful booking, thereby increasing conversion rates by decreasing friction in the booking flow.
The booking hold endpoint supports two kinds of hold:
The real-time availability and pricing endpoint also delivers ~5% faster performance than previous versions of this API.
The API endpoints accessible to you depend on which kind of partner you are; affiliate or merchant.
Affiliate partners have access to all non-transactional endpoints of the Viator Partner API. I.e., everything except booking, booking hold and booking cancellation endpoints. In addition, affiliates have access to additional legacy endpoints that provide functionality that helps to support attractions.
Merchant partners have access to all endpoints apart from the attraction endpoints designed for use by affiliate partners.
The following table describes which partner types have access to which endpoints:
| Endpoint | Affiliate partners | Merchant partners |
|---|---|---|
| /products/{product-code} | ✅ | ✅ |
| /products/modified-since | ✅ | ✅ |
| /products/bulk | ✅ | ✅ |
| /products/tags | ✅ | ✅ |
| /availability/check | ✅ | ✅ |
| /availability/schedules/{product-code} | ✅ | ✅ |
| /availability/schedules/modified-since | ✅ | ✅ |
| /availability/schedules/bulk | ✅ | ✅ |
| /bookings/hold | ❌ | ✅ |
| /bookings/book | ❌ | ✅ |
| /bookings/cancel-reasons | ❌ | ✅ |
| /bookings/{booking-reference}/cancel-quote | ❌ | ✅ |
| /bookings/{booking-reference}/cancel | ❌ | ✅ |
| /locations/bulk | ✅ | ✅ |
| /exchange-rates | ✅ | ✅ |
| /v1/taxonomy/destinations | ✅ | ✅ |
| /v1/taxonomy/attractions | ✅ | ✅ |
| /v1/product/reviews | ✅ | ✅ |
| /v1/product/photos | ✅ | ✅ |
| /v1/search/attractions | ✅ | ❌ |
| /v1/attraction | ✅ | ❌ |
| /v1/attraction/reviews | ✅ | ❌ |
| /v1/attraction/photos | ✅ | ❌ |
| /v1/attraction/products | ✅ | ❌ |
| /v1/support/customercare | ✅ | ❌ |
Access to the API is managed using an API key that is included as a header parameter to every call made to all API endpoints described in this document.
| Header parameter name | Example value |
|---|---|
| exp-api-key | bcac8986-4c33-4fa0-ad3f-75409487026c |
If you do not know the API key for your organization, please contact your business development account manager for these details.
Please note that language localization is now controlled on a per-call basis. Previously, localization settings were configured per API-key; whereas, under the present scheme, organizations have a single API key.
Language localization is accomplished by specifying the desired language as a header parameter (Accept-Language). See Accept-Language header for available langage codes.
The Accept-Language header parameter controls the language into which the natural language fields in the response from each endpoint will be translated.
Note: You can only specify languages that have been configured for your API-key. Therefore, if you wish to access additional languages, you will need to contact your business development account manager.
| Language | Accept-Language parameter value |
|---|---|
| English | en, en-US |
| Danish | da, da-DK |
| Dutch | nl, nl-NL |
| Norwegian | no, no-NO |
| Spanish | es, es-ES |
| Swedish | sv, sv-SE |
| French | fr, fr-FR |
| Italian | it, it-IT |
| German | de, de-DE |
| Portuguese | pt, pt-PT |
| Japanese | ja, ja-JP |
| Chinese (traditional) | zh-TW |
| Chinese (simplified) | zh-CN |
| Korean | ko, ko-KR |
In order to ensure the predictability of the behavior of this software, we have implemented a versioning strategy to handle updates to the API contract, as well as a mechanism to specify which version of the API you wish to access.
When we release a new version of this API, partners have the option of continuing to use the existing version or migrating to the updated version when they are ready.
The approach to versioning for this API is as follows:
The following types of change are considered backward-compatible, and will not result in a version release when introduced. Therefore, partners must ensure their implementation can handle such changes gracefully.
These changes comprise:
The following types of change are considered breaking changes and will result in the release of an incremented version of this software:
It is mandatory to specify which version of the API you wish to use via the 'Accept' header parameter in the request to each API endpoint; e.g., Accept: application/json;version=2.0. Omitting the version parameter will result in a 400 Bad Request response.
Example valid request:
curl --location --request GET 'https://api.sandbox.viator.com/partner/products/modified-since?cursor=MTU5MjM1NTM0MXwxMTM5ODZQNA==' \
--header 'exp-api-key: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx' \
--header 'Accept-Language: en-US' \
--header 'Accept: application/json;version=2.0'Example error response:
{
"code":"INVALID_HEADER_VALUE",
"message":"Accept header is missing or has invalid version information",
"timestamp":"2020-09-02T03:43:23.303946Z",
"trackingId":"3D45567E:2D25_0A5D03AB:01BB_5F4F14A5_394639:3DB7"
}This API supports gzip compression. Therefore, if you include gzip in the Accept-Encoding header parameter in the request, the API will respond with a gzip-compressed response.
You can retrieve the core product-content details from the following endpoints:
You can retrieve the availability schedules for products using the following endpoints:
There are ten endpoints necessary for the seamless operation of this API that have not yet been updated to the 'v2-style' functionality of the other endpoints.
V1 endpoints available to both partner types:
destinationIdattractionIdV1 endpoints for affiliate partners only:
These ten v1 endpoints operate differently to the v2 endpoints.
In particular:
data elementsuccess element being true or false, not the HTTP status code, which will be 200 in every case in which a response was able to be returned, regardless of any error(s)Example V1 error response:
{
"errorReference": "C0AA8A15:ED5E_0A2806D6:01BB_5F755F7F_54AA9:03D6",
"data": null,
"dateStamp": "2020-09-30T21:47:59+0000",
"errorType": "EXCEPTION",
"errorCodes": [
"UNKNOWN_ERROR"
],
"errorMessage": [
null
],
"errorName": "NullPointerException",
"extraInfo": {},
"extraObject": null,
"success": false,
"totalCount": 1,
"errorMessageText": [],
"vmid": "331009"
}This following diagram shows the different data element names in the responses from the v1 and v2 product content endpoints from which the sections of the product display page for product 114491P5 on Viator.com are sourced.
treatAsAdult flagIn v1 of this API, the requirement (or lack thereof) for an adult to be included in a booking was communicated via the treatAsAdult flag in the items of the ageBands[] array in the response from the /product endpoint. The default assumption in the v1 API was that at least one adult is required per booking unless the treatAsAdult flag is set to true for a non-adult age-band, in which case the inclusion of one traveler from that age-band is sufficient to fulfil the requirement.
See: Key concepts – Working with age-bands (Partner API v1) for more information.
In v2 of this API, whether an adult traveler is required in order to make a booking is communicated via the bookingRequirements.requiresAdultForBooking flag in the response from any of the product content endpoints.
If this flag is true, at least one traveler from one of the 'ADULT', 'SENIOR' or 'TRAVELER' age-bands must be included when making the booking.
In this version of the Viator Partner API (v2), product review information is not supplied via the product content endpoints, as it was in version 1. Instead, product reviews can be retrieved via the /v1/product/reviews endpoint.
For more information see: Determining ratings
Any particular product may consist of a number of variants, each of which is referred to as a 'product option'. In previous versions of this API, and in the tours and activities sector in general, product options are also referred to as 'tour grades'.
For example, product options might represent different departure times, tour routes, or packaged extras like additional meals, transport and so forth.
The product options available for a product can be found in the productOptions array in the responses from any of the product content endpoints.
An example productOptions array for the product 5010SYDNEY is as follows:
"productOptions": [
{
"productOptionCode": "48HOUR",
"description": "Duration: 2 days: FREE BONUS ENTRY to Sydney Tower with every Deluxe ticket end 31st March<br/>48 Hour Premium Ticket: Unlimited use on Big Bus Sydney & Bondi Tour for 48 hours from time of first use PLUS a guided walking tour of The Rocks, Syd",
"title": "48 Hour Premium Ticket ",
"languageGuides": [...]
},
{
"productOptionCode": "TG1",
"description": "Hop-on Hop-Off and Attractions: 48hr Big Bus Tours, 1-day Hop-On Hop-Off Harbour Cruise, 4 Attractions: Tower Eye, Madame Tussauds, Wildlife Zoo, Aquarium<br/>Duration: 2 days<br/>Complimentary Walking Tours: Complimentary English-speaking guided walking tour of “The Rocks” historic and harbourside precinct.",
"title": "48Hour Deluxe PLUS Attractions",
"languageGuides": [...]
},
{
"productOptionCode": "24HOUR",
"description": "Unlimited use on Big Bus Sydney & Bondi Hop-on Hop-off Tour for 24 hours from time of first use",
"title": "24 Hour Classic Ticket ",
"languageGuides": [...]
},
{
"productOptionCode": "DELUXE",
"description": "Big Bus and Habour Cruise: Combine two great Sydney experiences into one with a hop-on hop off Big Bus Tours and a hop-on hop-off Sydney Harbour cruise <br/>Duration: 2 days: FREE BONUS ENTRY to Sydney Tower with every Deluxe ticket end 31st March<br/>Complimentary Walking Tour: Complimentary English-speaking 90-minute guided walking tour of “The Rocks” historic and harbourside precinct.",
"title": "48 Hour Deluxe Bus and Cruise",
"languageGuides": [...]
}
]This product has four product options, each with an identifying code given in the productOptionCode field:
"48HOUR""TG1""24HOUR""DELUXE"Not all products have multiple product options. Products with no variations will not include a productOptions element in the response.
Product options are essentially a subcategory of the tour or activity. You will need to specify the product option you wish to book when making a booking.
The availability schedules endpoints provide information about the availability of a product (along with its various product options and starting times, if they exist) and its pricing.
This section explains how to interpret the response from the availability schedules endpoints.
Example response snippet from /availability/schedules/10212P2 (some starting times were removed for brevity):
{
"productCode": "10212P2",
"bookableItems": [
{
"productOptionCode": "TG45",
"seasons": [
{
"startDate": "2019-05-01",
"endDate": "2021-12-31",
"pricingRecords": [
{
"daysOfWeek": [
"MONDAY",
"TUESDAY",
"WEDNESDAY",
"THURSDAY",
"FRIDAY",
"SATURDAY",
"SUNDAY"
],
"timedEntries": [
{
"startTime": "11:00",
"unavailableDates": [
{
"date": "2020-09-16",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-23",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-22",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-27",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-29",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-30",
"reason": "SOLD_OUT"
}
]
},
{
"startTime": "10:00",
"unavailableDates": [
{
"date": "2020-09-25",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-26",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-28",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-27",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-30",
"reason": "SOLD_OUT"
},
{
"date": "2020-09-29",
"reason": "SOLD_OUT"
}
]
},
{...}
],
"pricingDetails": [
{
"pricingPackageType": "PER_PERSON",
"minTravelers": 1,
"ageBand": "INFANT",
"price": {
"original": {
"recommendedRetailPrice": 0.00,
"partnerNetPrice": 0.00,
"bookingFee": 0.00,
"partnerTotalPrice": 0.00
}
}
},
{
"pricingPackageType": "PER_PERSON",
"minTravelers": 1,
"ageBand": "ADULT",
"price": {
"original": {