Search/tweets fails for mentions of uppercase username, works with lowercase



I’ve encountered a weird case for a single username ( for which

fails with “Missing or invalid url parameter” error, but

works fine. The search operators guide does not mention anything and the actual example is “to:NASA” so it shouldn’t be a case-sensitivity issue.


Definitely a weird case, this works (in both cases) on the premium search endpoint, but not on standard where it seems to fail on uppercase. However, as a workaround, I added the @ character to the query:

This appears to work as expected.