Plugins 〉Discourse Datasource

Data Source

Discourse Datasource

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Grafana Discourse data source

License GitHub Actions CI

View report data and user data from a hosted Discourse instance in your Grafana.


Demo dashboard for Topics and Replies

The dashboard above is used to track some statistics for the hosted Discourse website for Grafana.


  • URL: the url for your Discourse instance. For example,
  • Username: the username associated with your API Key or system if you chose the All Users option for the User Level.
  • API Key: Create an API key in Discourse in the Admin -> API -> Keys section.

Creating an API key in hosted Discourse

  1. Navigate to the Admin -> API -> Keys section and click on the New API Key button.
  2. Fill in a description for the new key.
  3. Choose the User Level - either All Users or a specific single user.
  4. Check the Global Key (allow all actions) option to get the permissions needed to access admin reports.


There are two types of queries - Reports and User. The ability to do queries is limited but using the Transformations feature, you can manipulate or do maths on the returned data to do more powerful queries.

Report queries

The report queries are the reports that are available in the admin section in Discourse. For the example, the Topics report:

Having them in Grafana, allows you to combine multiple reports in one panel which cannot be done in Discourse. The included dashboard uses the Topics report and the Topics with no reply report to visualize how many topics are getting replies in one panel.

User queries

There are two user queries - the Top Public Users query and the Staff query. This return statistics on individual users in a table format.

An example of using transformations

The statistics for topics from the Grafana Community site is a more advanced example of what you can do with transformations.

The goal is to take two queries, total the results over a time period and then subtract one from the other and we will use the transformations feature in Grafana to achieve this.

  1. Start with two queries - Topics and Topics with no replies and choose the Stat visualization. In the Panel options, change the Calculation to Total and change the Orientation to Horizontal.

  2. Switch to the transformations tab and add two Add field from calculation transformations and reduce the two fields, Topics and Topics with no replies. We do this in case we have any gaps in the data to avoid NaN errors. Use the Reduce row mode and choose the Total calculation. Choose an appropriate alias for each. You should now see four stats, the two original fields and the two reduced fields.


  3. Add a third Add field from calculation transformation and choose Binary operation as Mode. For the maths operation, choose your two reduced fields and the minus operation.


  4. Now you should have five stats and we only want to show three and hide the calculated fields. Hide the fields you don't want to show by adding a Organize fields transformation.


Developer Guide

There is a developer guide with instructions for building the plugin.

For more information, visit the docs on plugin installation.


  • Adds filtering for top level categories for report queries that enables getting metrics for a specific top-level category. #4


The initial version of the data source.

  • Support for hosted Discourse only
  • Support for Reports and User queries