Feature request: Expose Grok Build usage quota and voice usage endpoints

[NYTEMODEONLY]

Request

Add public SDK/API support for querying Grok Build usage quotas and voice usage — data that's currently only visible in the console dashboard but not exposed via any public endpoint.

What We See in the Console

When logged into console.x.ai, users can see:

• Grok Build usage — weekly quota progress (e.g. "2% used for the week")
• Voice usage — voice minute quota progress (e.g. "1% used")
• Reset available — when the weekly quota resets

What's Missing

There is no SDK method or REST endpoint that exposes these metrics. The Management API (https://management-api.x.ai) only covers team prepaid billing / pay-as-you-go spend tracking. Grok Build uses a subscription-based quota system that is tracked separately.

Proposed Additions

We'd love to see the SDK support for:

1. Grok Build quota — current usage % and reset time

   # Example of desired API surface:
   client.quota.get_grok_build()  # → {used_percent: 2.0, reset: "2026-08-23T00:00:00Z"}

2. Voice usage quota — current voice usage % and reset time

   client.quota.get_voice_usage()  # → {used_percent: 1.0, reset: "2026-08-23T00:00:00Z"}

3. Account-level quota summary — all plan limits in one call

   client.quota.get_summary()  # → {build: {...}, voice: {...}, ...}

Why This Matters

• Third-party tools (like usage dashboards) can't aggregate xAI usage with other providers
• Developers building on Grok Build can't show users their own quota limits
• No way to programmatically check if quota is near exhaustion

References

• Console dashboard: https://console.x.ai
• Current Management API: https://management-api.x.ai (covers prepaid/team billing only)
• xAI docs: https://docs.x.ai

Thanks for considering!