Constant PRIMARY_WORDINGS 

pub const PRIMARY_WORDINGS: [&str; 4];

The wordings GitHub answers an exhausted primary budget with.

rate_limited is the type its GraphQL error carries, which is read as a field rather than looked for in the response text. api rate limit already exceeded is what GraphQL answers a request made once the hour’s budget is spent — “API rate limit already exceeded for user ID …” in the errors of an HTTP 200, with no type — and neither of the other two phrases is a substring of it, so without it that answer read as a refusal that will never lift. Pinned and gated exactly as SECONDARY_WORDINGS is, and public for the same one reason.