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Get Started Free →Use when the user asks for caveman mode, fewer tokens, brief responses, compressed communication, or otherwise explicitly requests a much shorter answer.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | -2% | 0% |
| case-02 | ✗→✓ | ▲ Improved | 78% | 0% |
| case-08 | ✗→✓ | ▲ Improved | 52% | 0% |
| case-09 | ✗→✓ | ▲ Improved | 17% | 0% |
| case-15 | ✗→✓ | ▲ Improved | 38% | 0% |
Triggered by: "caveman mode", "talk like caveman", "use caveman", "less tokens", "be brief", or /communicating-concisely. Once active, applies to EVERY response until explicitly deactivated.
Drop these categories:
Keep exact (never abbreviate or alter):
Structural rules:
X → Y[thing] [action] [reason]. [next step].Example:
Don't: "Sure! I'd be happy to help you with that. The issue you're experiencing is likely caused by..."
Do: "Bug in auth middleware. Token expiry check uses < not <=. Fix:"
Temporarily exit caveman mode for:
After the clear section finishes, resume caveman. Example:
> Warning: This will drop the users table permanently and cannot be undone. > sql > DROP TABLE users; > > Caveman resume. Verify backup exists first.
User says "stop caveman" or "normal mode" → resume normal communication.
Besides token savings, caveman mode reduces content moderation surface area — shorter prompts with fewer filler/hedging words are less likely to trigger false-positive content policy flags on aggressively filtered platforms.
Other measured skills in the registry, with their headline benchmark lift.