Provider · xAI

Grok,
for sharp takes.

Paste an xai key. Pick Grok 4. Drafts arrive with a point of view, not a hedge.

Open a workspace
Add API keyxAI
xAI
Grok 4
xai-████████ 81pD

Encrypted at rest with AES 256 GCM. Never returned to the browser.

CancelSave key
Why Grok

Opinionated by default.

Most models soften. Grok says the thing. With your persona on top, it says the thing in your voice.

Edge

A take, not a summary.

If you are building a thought leader voice, Grok is the fastest way to get drafts that do not start with “great post.” The edges survive.

  • Direct openings
    Rarely starts with a compliment. Opens on the angle.
  • Matches Thought Leader tone
    The pairing most Rook Signal users reach for.
  • Respects rules
    Your banned phrases still hold.
Rook PersonaYour voice
Your voice

Three to five sentences that sound like you. Rook Intelligence learns from these.

Sample 1This matches what we found last quarter. Timing was the variable nobody priced in.
Sample 2Curious how the team decided to ship this without a private beta. Feels brave.
Sample 3Great read. The part about retention compounding quietly is something I keep coming back to.
Tone
ProfessionalComposed. Clear.
FriendlyWarm. Open.
DirectPrecise. Blunt.
Thought LeaderSharp. Original.
ConversationalNatural. Human.
Comment rules
Never say “just”. Never start with “I think”. End with a question when it feels natural.
Key prefix

The xai key.

Grok keys start with xai. Rook Signal detects the prefix and warns about mismatches with any other provider.

  • AES 256 GCM
    Stored encrypted. Never shown in full.
  • Test in a click
    Rook Signal pings xAI before saving.
  • Swap models
    Per workspace. Your persona stays.
Add API keyxAI
xAI
Grok 4
xai-████████ ls3C

Encrypted at rest with AES 256 GCM. Never returned to the browser.

CancelSave key
What you get

A draft with a view.

Best for workspaces where the whole point is to sound like you, with your opinions on.

Strong POV

Drafts with a view, not a summary.

Lighter on hedging

Fewer qualifiers. Shorter openers.

Fast enough

Not Groq fast, but fast enough for daily trackers.

Great for thought leadership

Pairs naturally with the Thought Leader tone.

Current on the conversation

Grok reads the web. Useful for replies that reference ongoing debate.

Reliable

Rook Signal handles retries and rate limits automatically.

xai
Key prefix
Grok 4
Recommended model
POV
Default posture
1
Click to set up
xAI

A sharper voice by default.

Paste an xai key. Pair it with the Thought Leader tone. Watch what the queue reads like tomorrow.

Open a workspace