Debug Rules

You can use console.log in Rules code for debugging. There are several ways to see the console.log output.

Try this Rule

TRY THIS RULE in the Rules Editor lets you run a Rule in isolation with mock user and context objects. Clicking TRY will run the Rule with those two objects as input, and any console.log output will be displayed too.

Try this Rule

The TRY THIS RULE feature functions outside a specific client context. When using this feature, you may run into issues if your Rule depends on data that would be provided when called from an actual application.

Real-time logs extension

The Real-time Webtask Logs extension displays all logs, in real-time, for all custom code in your account. This includes all console.log output and exceptions.

Debug Rule CLI

Only tenants created prior to 17 July 2018 have access to and the Webtask CLI. If you are an enterprise customer with a newer tenant, please contact your account representative to request access. Other requests can be made through the Auth0 Contact Form and will be evaluated on a case-by-case basis.

Similar to the above, the DEBUG RULE button displays instructions for installing, configuring, and running the webtask CLI for debugging Rules. Paste these commands into a terminal to see the console.log output and any unhandled exceptions that occur during Rule execution.

For example:

  ~  npm install -g wt-cli
  ~  wt init --container "youraccount" --url "" --token "eyJhbGci...WMPGI" -p "youraccount-default-logs"
  ~  wt logs -p "youraccount-default-logs"
  [18:45:38.179Z]  INFO wt: connected to streaming logs (container=youraccount)
  [18:47:37.954Z]  INFO wt: webtask container assigned
  [18:47:38.167Z]  INFO wt: ---- checking email_verified for! ----

This debugging method works for Rules tried from the Dashboard and for those actually running during user authentication.