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7/24/2026
Do Not Invent a 5-Hour Window in a Codex Usage Tracker

Do Not Invent a 5-Hour Window in a Codex Usage Tracker

Short summary

A practical guide on building a Codex usage tracker that respects the current weekly quota window instead of inventing a deprecated 5-hour one. Covers provider-independent error states, local token-ledger deduplication, event-timestamp-based attribution, and pricing unknown models as unpriced rather than guessing. Verified on macOS v1.7.1 as part of the Agent Island dashboard.

  • •Codex now exposes only a weekly window; UI must not hardcode the old 5h label
  • •Each provider needs independent error, freshness, and refresh state
  • •Local ledger should deduplicate replayed events and leave unknown models unpriced

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