docs(xai-oauth): note X Premium+ also unlocks Grok OAuth (#29055)

The xAI Grok OAuth page only mentioned SuperGrok subscribers. An X
Premium+ subscription on the X account you sign in with also unlocks
Grok access via accounts.x.ai (xAI links the X subscription status to
the xAI session automatically — see https://docs.x.ai/grok/faq).

Updates the OAuth page title, prereqs, and overview table, plus the
provider/configuration/x-search docs that reference the OAuth flow.
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Teknium 2026-05-19 22:28:26 -07:00 committed by GitHub
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@ -347,7 +347,7 @@ When using the Z.AI / GLM provider, Hermes automatically probes multiple endpoin
xAI is wired through the Responses API (`codex_responses` transport) for automatic reasoning support on Grok 4 models — no `reasoning_effort` parameter needed, the server reasons by default. Set `XAI_API_KEY` in `~/.hermes/.env` and pick xAI in `hermes model`, or drop `grok` as a shortcut into `/model grok-4-1-fast-reasoning`.
SuperGrok subscribers can sign in with browser OAuth instead of using an API key — pick **xAI Grok OAuth (SuperGrok Subscription)** in `hermes model`, or run `hermes auth add xai-oauth`. The same OAuth bearer token is automatically reused by direct-to-xAI tools (TTS, image gen, video gen, transcription). See the [xAI Grok OAuth guide](../guides/xai-grok-oauth.md) for the full flow — and if Hermes runs on a remote host, also see [OAuth over SSH / Remote Hosts](../guides/oauth-over-ssh.md) for the required `ssh -L` tunnel.
SuperGrok and X Premium+ subscribers can sign in with browser OAuth instead of using an API key — pick **xAI Grok OAuth (SuperGrok Subscription)** in `hermes model`, or run `hermes auth add xai-oauth`. The same OAuth bearer token is automatically reused by direct-to-xAI tools (TTS, image gen, video gen, transcription). See the [xAI Grok OAuth guide](../guides/xai-grok-oauth.md) for the full flow — and if Hermes runs on a remote host, also see [OAuth over SSH / Remote Hosts](../guides/oauth-over-ssh.md) for the required `ssh -L` tunnel.
When using xAI as a provider (any base URL containing `x.ai`), Hermes automatically enables prompt caching by sending the `x-grok-conv-id` header with every API request. This routes requests to the same server within a conversation session, allowing xAI's infrastructure to reuse cached system prompts and conversation history.