[FEATURE] Claude Code should report when the quota resets in a documented UTC datetime format like `limit resets at: 2025-09-11T10:13:01+0000`

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Wish:
Claude Code should report when the quota resets in a documented UTC datetime format like limit resets at: 2025-09-11T10:13:01+0000

Problem:
I may have a recurring plan that includes some "free" tokens, or there is some of daily limit, and I exceed the hourly or daily or monthly quota. Currently, there is no clear way to tell when the limit resets. So often I would repteadly and blindly re-try your API, and each time I’d do some fall back strategy if I get a refusal.

Proposed Solution

Suggestion:
When we hit a 429 rate limit or other such quota limit, your API should say when (in UTC datetime) the quota will be reset, and then I could parse that, and not blindly re-try before that time. The format in which your API reports that datetime-based reset should be documented. For example the API response (typically 429) could include the string:

limit resets at: 2025-09-11T10:13:01+0000

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

API and model interactions

Use Case Example

_No response_

Additional Context

Why is this useful?
I'd like to incorporate a fallback to another provider or billing model if I exceed the quota. The blind re-trying is not very healthy and puts a strain on my app and on your API.