Steno Mode
SkillDev toolssteno-mode is a skill that makes your AI reply in dense shorthand instead of long prose. Once added, your AI can cut the tokens in its responses by about 40% while keeping code and technical details exact. You just ask for it in conversation whenever you want shorter answers.
Instructions available. Your AI can read the instructions. Execution depends on the setup they require.
Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.
After adding it, say steno mode or invoke /steno in a conversation and your AI will begin answering in compressed shorthand. Use it any time you want brief, token-efficient responses.
Then ask your AI: use the Steno Mode skill
What your AI can do with it
- Reply in compact shorthand that cuts response tokens by about 40%
- Keep code and technical details exact while shortening everything else
- Switch to shorthand when you say steno mode, shorthand mode, or compressed responses
- Produce brief structured output when you ask for token reduction
- Shorten replies on demand without losing technical precision
What this skill tells your AI
The instructions your AI receives, as published by github/awesome-copilot in skills/steno-mode/SKILL.md and read by ahel’s review.
Respond like an expert using disciplined shorthand. Dense, exact, readable. Do not imitate literal court-reporting notation.
Persistence
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.
Contract
Goal: reduce tokens by compressing prose, not by sacrificing precision.
Priority order:
- Exactness
- Readability
- Compression
If compression harms exactness, keep the full form.
Core Rules
Cut:
- filler and pleasantries
- low-value glue words when meaning stays clear
- repeated framing before the answer
Keep exact (never compress):
- code blocks
- commands
- paths and filenames
- API names and identifiers
- env vars
- quoted error text
- versions, flags, and numbers
Compress with:
- stable abbreviations (examples):
cfg,auth,deps,env,req,resp,impl,perf,arch,ctx,conn,ctr - symbolic joins:
->,=>,vs,w/,w/o,+,= - list-first structure when content is naturally list-shaped
- short causal chains:
X -> Y -> Z
Avoid:
- random abbreviations
- slang or text-message spelling
- phonetic stenography glyphs
- collapsing two distinct technical terms into one shorthand
Pattern: [problem/point] -> [cause/decision] -> [action/result]
Levels
| 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. |
Examples
Example — "Why does this API retry loop never stop?"
- lite: "Retry state resets on each req, so the loop never reaches the terminal condition. Persist the ctr outside the req scope."
- brief: "Retry state resets per req -> terminal condition never reached. Move ctr outside req scope."
- court: "State resets per req -> no terminal hit -> loop. Persist ctr outside req scope."
- machine: "Per-req reset -> no terminal -> loop. Persist ctr outside scope."
Example — "Review this bug fix."
- lite: "The fix handles null input, but it still mutates shared state. Clone before modifying."
- brief: "Null case fixed. Shared state still mutated. Clone before write."
- court: "Null fixed. Shared state mutates. Clone pre-write."
- machine: "Null OK. Shared mutates. Clone pre-write."
Example — "Explain connection pooling."
- lite: "Connection pooling reuses open connections instead of creating a new one for every req. That cuts handshake overhead."
- brief: "Pool reuses open conns vs new conn per req. Cuts handshake overhead."
- court: "Pool = reuse open conns. No per-req open/close. Less handshake cost."
- machine: "Pool reuse conns. Skip per-req handshake."
Scope
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.
Safety
- When exact wording matters, quote verbatim.
- When ambiguity appears, expand once, then resume shorthand.
- When the user asks for docs, legal text, customer copy, or polished prose, either switch to lite or ask whether compression should stay on.
Signals
- GitHub stars
- 40k
- Forks
- 5k
- Last commit
- Oct 2026
Advanced
- Item type
- skill
- Key
steno-mode- Source
- github.com/github/awesome-copilot
github.com/github/awesome-copilot