laconic

Philip II: "If I invade Laconia, I shall turn you out."
Sparta: "If."

90%

tokens saved

+25pp

vs caveman

facts lost

npx skills add GabrielBarberini/laconic

click to copy

Before / After

"My Express auth middleware is letting expired JWT tokens through. The expiry check uses Date.now() compared to the token's exp field. What's wrong and how do I fix it?"

Normal ~1,300 tok

Explains JWT spec, Unix timestamps vs JavaScript milliseconds, walks through middleware architecture, adds error handling, suggests libraries, and outputs a full refactored file (…)

Laconic 19 tok

"exp is in seconds. Date.now() is milliseconds.
if (Date.now() / 1000 > payload.exp)"

Caveman Benchmark

Task	Normal	Laconic	Saved	vs Caveman
React re-render bug	885	68	92%	+5pp
Auth middleware fix	1059	39	96%	+13pp
PostgreSQL pool setup	2167	189	91%	+7pp
Git rebase vs merge	996	95	90%	+32pp
Callback to async/await	494	62	87%	+65pp
Microservices vs monolith	826	209	75%	+45pp
PR security review	940	126	87%	+46pp
Docker multi-stage	2635	149	94%	+22pp
PostgreSQL race condition	1370	49	96%	+15pp
React error boundary	4096	400	90%	+3pp
Average	1547	139	90%	+25pp

Claude Sonnet 4 via Langdock. Median of 3 trials. Range: 75%–96%. Same 10 prompts as Caveman benchmark (avg 64%).

Output tokens only;

Caveman vs Laconic

	Caveman	Laconic
Tone	Primitive	Terse
Explanation	Normal	Trusts context, skips what reader knows
Code	Normal	Just enough code
Token savings	~65%	~90%

Laconic speech is not just brevity — it is the weaponization of implication.