In addition to the WOT Terms of Service, the following restrictions apply to using the API:

You agree not to make more than 50000 API requests during any 24 hour period and agree to limit your request rate to at most 10 requests per second. If you expect to exceed these limits, please contact us regarding partnership or commercial offering.

Furthermore, if you use the API in your application, we recommend the following:

1. You should credit WOT in your application. You can use our badges, for example.
2. You should not request the same information more than once during any 30 minute period, but should use a local cache for repeated requests instead.