fix(extra-usage): correct unit assumptions for usage API response#388
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The Anthropic usage API returns `extra_usage.used_credits` in cents (not dollars) and `extra_usage.utilization` as a percent 0-100 (not a 0-1 fraction). The current widget code assumed the inverse, which made: - ExtraUsageUtilization always clamp to 100.0% (multiplying a percent by 100 and clamping to [0,100]) - ExtraUsageRemaining always show $0.00 (subtracting cents from dollars goes negative, clamped to 0) Drop the `* 100` in ExtraUsageUtilization and divide `extraUsageUsed` by 100 in ExtraUsageRemaining so both widgets render real values. Verified locally against a live API response where util=6.74 and used=27087/limit=400000 — now renders "Overage: 6.8% | Overage Left: \$3,728.54" instead of "Overage: 100.0% | Overage Left: \$0.00".
Adjust extraUsageUsed fixtures to cents and extraUsageUtilization fixtures to 0-100 percentages so they exercise the corrected widget math. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Update fetch and prefetch fixtures to reflect used credits as cents and extra usage utilization as a 0-100 percentage. Clarify the UsageData comments to match the widget contract.
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Thanks for the contribution here. The live API details you included were helpful. I pushed a small follow-up commit with minor test/contract tweaks so the source-layer fixtures and
The widget changes look good with that contract clarified. This will be included in the next release. |
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Summary
Fixes #387.
ExtraUsageRemaining:extraUsageUsedis in cents (not dollars), so divide by 100 before subtracting from the limit. Previously the widget subtracted a cents value from a dollars value, producing an inflated "Overage Left" amount.ExtraUsageUtilization:extraUsageUtilizationis already a percentage (0–100), not a fraction. Removed the erroneous* 100that caused the value to clamp to 100% almost immediately.Test plan
bun run lintpassesbun testpasses🤖 Generated with Claude Code