xai-grok-onboarding

SKILL.md

🟢 xAI OAuth Onboarding

Use any active xAI account — X Premium, X Premium+, SuperGrok, or SuperGrok Heavy — for grok-4.3, grok-build-0.1, grok-4.20-* and multi-agent models. No separate API key needed.

This is standard OAuth 2.0 (RFC 8628 Device Authorization Grant), not a vendor-custom flow.

Tier → model access

The JWT issued by auth.x.ai carries a tier claim; higher tiers unlock more models from /v1/models. Observed mapping (xAI does not publish this officially):

Tier
Subscription
Approx. model access

1
X Premium ($8/mo)
grok-4.3 baseline

2
X Premium+ ($16/mo)
+ grok-4.20-0309 variants

3
SuperGrok ($30/mo)
+ reasoning models

4
SuperGrok Heavy ($300/mo)
+ grok-build-0.1 + multi-agent

status() reports the user's tier so they know which models will be available.