> For the complete documentation index, see [llms.txt](https://docs.hostedgraphite.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hostedgraphite.com/add-ons-and-integrations-guide/circle-ci.md).
# Circle CI
CircleCI is a continuous integration tool that allows you to rapidly run tests on every change to your code.
One useful way of monitoring the changes in your codebase is by adding annotations whenever your tests run. This handy Hosted Graphite webhook you can do just that!
### How to set up a CircleCI webhook
CircleCI’s documentation lists [how to edit your CircleCI configuration to add a new webhook url](https://circleci.com/docs/configuration#notify/).
To get your webhook URL from Hosted Graphite - Simply click the “Copy CircleCI webhook URL” button on the [add-ons](https://www.hostedgraphite.com/app/addons/) page, and add the URL to your circle configuration.
CircleCI Webhook
To see these events as [annotations](https://docs.hostedgraphite.com/api-guides/annotations-and-events-api#dashboard-annotations) on your graph, just enable them in your dashboard settings, and query by Tag:
