API Reference

  1. Accessing the API
  2. JSON
  3. Example cURL requests
  4. Request Options
  5. HTTPS
  6. Rate limiting
  7. GDPR

Accessing the API

The BookingSync API can be accessed over HTTPS with base URL at https://www.bookingsync.com/api/v3/.


All data is sent and received as JSON.

Regardless whether the response returns a single resource or a collection, the body is expected to be in the following format:

  "plural_resource_name": [
      "id": "1",
      "attribute_name": "attribute_value"

Example cURL requests


curl --header 'Authorization: Bearer YOUR_ACCESS_TOKEN' https://www.bookingsync.com/api/v3/rentals


curl --header 'Authorization: Bearer YOUR_ACCESS_TOKEN' --header 'Content-Type: application/vnd.api+json'
--data '{"rentals":[{"name":"Name"}]}' https://www.bookingsync.com/api/v3/rentals


curl --header 'Authorization: Bearer YOUR_ACCESS_TOKEN' --header 'Content-Type: application/vnd.api+json'
--request PUT --data '{"rentals":[{"name":"New Name"}]}' https://www.bookingsync.com/api/v3/rentals/RENTAL_ID


curl --header 'Authorization: Bearer YOUR_ACCESS_TOKEN' --request DELETE

Request Options


Large collections are paginated, meaning the response will include only a subset of resources and links to other pages.

The links are sent in the Link header, e.g.:

Link: <https://www.bookingsync.com/api/v3/accounts?page=1>; rel="first", <https://www.bookingsync.com/api/v3/accounts?page=2>; rel="next", <https://www.bookingsync.com/api/v3/accounts?page=3>; rel="last"
X-Total-Pages: 3

The possible rel values are:

Name Description
next Shows the URL of the immediate next page of results.
last Shows the URL of the last page of results.
first Shows the URL of the first page of results.
prev Shows the URL of the immediate previous page of results.

We’ve built in a default limit on results, you can use the per_page parameter to change how many results per page you want to get. Large queries can hurt performance, so per_page is capped by the default limit. If you wish to retrieve more records, you should make multiple requests using the page parameter and combine the results within your application.

Limiting Fields

For retrieving collection of large resources, it is sometimes useful to limit the attributes returned by the API. For example, if we wanted to get only the id and business_name fields of the Accounts, we could specify that in the request:

GET https://www.bookingsync.com/api/v3/accounts?fields=id,business_name

Sideloading Associations

For lowering the number of requests, it is sometimes useful to sideload associations. For example, if we wanted to sideload availabilities of the Rentals, we could specify that in the request:

GET https://www.bookingsync.com/api/v3/rentals?include=availability


Every request to the API must use HTTPS. When the API is accessed over HTTP, a 302 redirect will be returned with the correct HTTPS url.

Rate limiting

Each application accessing the API has a limit of 1000 requests per hour.

Rate limiting information will be returned in the headers:

X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 999
X-RateLimit-Reset: 1395140400

X-RateLimit-Reset is the UNIX time at which the next limit reset happens.

Note: Reaching the rate limit, will return an error message API v3 rate limit exceeded. with 429 Too Many Requests status code.


Refer to GDPR guide.