Figure 6-313 Testing the API 7 2. You can also test the same from any external tool or even the web-browser. To do that,  use the link in Example 6-22. Note:  Do not forget to change the port if you have a different server port. http://localhost:3010/api/Authors Example 6-22 API testing link Figure 6-314 shows the API testing result. Figure 6-314 API testing result 3. Next is filters. Filters specify criteria for the returned data set. LoopBack supports the  following kinds of filters: Chapter 6. Practical agile integration  393