GitHub Adds Copilot App Activity to Usage Metrics API

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GitHub expanded its usage metrics API on July 17, 2026, to include Copilot app activity data. The update means historical metric totals may arrive late or shift in meaning as new product surfaces are added. Developers are advised to store observations in an append-only format, keyed by repository, day, surface, and definition version, rather than overwriting existing rows. This approach preserves data provenance and ensures dashboards can be reproduced accurately as of any prior timestamp. The guidance addresses common challenges in usage telemetry systems, including late backfills, duplicate data, and changing metric definitions.

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