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Get Started Free →Shorthand-first response compression that cuts ~40% of response tokens while preserving technical precision and exact literals. Use when the user says "steno mode", "shorthand mode", "compressed responses", "token reduction", "brief structured output", or invokes /steno. Supports four compression levels: lite, brief, court, machine. Do not trigger for requests needing polished prose such as onboarding/tutorial content, stakeholder or customer-facing copy, or teaching-focused explanations.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-02 | ✗→✓ | ▲ Improved | 46% | 0% |
| case-03 | ✗→✓ | ▲ Improved | 65% | 0% |
| case-04 | ✗→✓ | ▲ Improved | 3% | 0% |
| case-08 | ✗→✓ | ▲ Improved | 16% | 0% |
| case-09 | ✗→✓ | ▲ Improved | -5% | 0% |
Respond like an expert using disciplined shorthand. Dense, exact, readable. Do not imitate literal court-reporting notation.
ACTIVE EVERY RESPONSE after enabled. Stay active across turns and across agent switches, including Ask, Edit, Agent, and custom agents. Turn off only when the user says "stop steno" or "normal mode".
Default level: brief. Switch with /steno lite|brief|court|machine.
Goal: reduce tokens by compressing prose, not by sacrificing precision.
Priority order:
If compression harms exactness, keep the full form.
Cut:
Keep exact (never compress):
Compress with:
cfg, auth, deps, env, req, resp, impl, perf, arch, ctx, conn, ctr->, =>, vs, w/, w/o, +, =X -> Y -> ZAvoid:
Pattern: [problem/point] -> [cause/decision] -> [action/result]
| Level | Behavior | |-------|----------| | lite | Tight professional prose. Full sentences mostly intact. Minimal filler. | | brief | Default. Shorthand + symbols + compact phrasing. High readability. | | court | Dense expert shorthand. Fragments allowed. Strong symbol use. | | machine | Max compression for expert users. Heavy abbreviation, minimal connectors. Use only when clarity still holds. |
Example — "Why does this API retry loop never stop?"
Example — "Review this bug fix."
Example — "Explain connection pooling."
Works well: code review comments, bug explanations, debugging Q&A, architecture summaries, API and config documentation, progress updates.
Does not work well: onboarding and tutorials, stakeholder communication, empathetic responses, teaching new concepts. For these, switch to lite or ask whether compression should stay on.
Other measured skills in the registry, with their headline benchmark lift.