For Developers

TeSS is committed to the FAIR principles: making data findable, accessible, interoperable and re-usable. As such, all content in TeSS is available under the CC BY 4.0 licence, and can be accessed through our API and widgets. The TeSS codebase is also available to re-use under the BSD Licence, and can be found on GitHub.


The source code for TeSS is available on GitHub .

Source code is available under the BSD 3-Clause license.


Data in TeSS can be accessed via our API.

Data are made available under the CC-BY 4.0 license.


Widgets are chunks of javascript code that can be copied into website source code to display TeSS content. There are several different styles and functionalities available from our configurable widget suite. Widgets can be used to enhance your site and offer your community lists of relevant events or training resources.

View Our Available Widgets

Below is a live example of the TeSS Maps widget.


TeSS has a fully functioning JSON API. You can explore our JSON-API by appending .json_api to the end of the URL of most pages (excluding parameters). For example:

The full documentation for the TeSS JSON API can be found here:

View our JSON-API documentation

We recommend using the JSON API, but if you have already begun using our old API, technical information can still be found here:

View our legacy API documentation