Pipeline.builds does not appear to support pagination. The PageInfo object returned always contains null values, and builds itself does not accept the before and after parameters.
(Apologies for posting in the “General” space, I couldn’t find a GraphQL specific forum space for issue reports).
Yep it’s been broken for some time https://github.com/buildkite/docs/issues/190
Would love to see it fixed too
Hi folks! Sorry for the late reply here.
I just took a look, and pagination is functioning as expected for me now — page info seems populated, and cursor navigation is functioning. If you’re still seeing odd results please reach out with specific queries via support@buildkite.com and we’ll take a look. 
♂