Thread:Project:Support desk/Opensearch action returns only 15 items instead of 100 result asked for

In the API sandbox (https://en.wikipedia.org/wiki/Special:ApiSandbox#action=opensearch&format=json&search=R&limit=100&namespace=0) I am querying for search results for "R" as follows; '/w/api.php?action=opensearch&format=json&search=R&limit=100&namespace=0' but it returns only the following 15 results. "R", [       "Race and ethnicity in the United States Census", "Russia", "Romanization", "Rock music", "Romania", "Republican Party (United States)", "Roman Catholic Church", "Rome", "Record producer", "Republic of Ireland", "Royal Navy", "Radio broadcasting", "Rolling Stone", "Rugby union", "Rhythm and blues" ]

I am querying for 100 search results but it is still only returning 15 results always. Can anyone please tell as to what I am doing wrong or the search results are limited to 15 results only. I am sure for a letter R there should be many articles.

- Harin Sutaria