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Why is an AppID and registration required for using web services?

  • By registering you acknowledge the web services Terms of Use.
  • We retain your email address in order to notify you of upcoming changes to the API.
  • TriMet's primary use for the web services it makes available is to provide its own customers and staff with information. By tracking the AppID and the ip address of clients using the web services we can set a threshold on their usage. This protects the web services from a process that may attempt to make excessive requests to our web services. By default each AppID is limited to 1,000,000 requests a day.

Please note that AppIDs will be deleted after 6 months of in activity.

If you would like to request more requests per day for an AppID, or for any other questions send an email to