Token efficiency
Claude Cortex
npx -y skills add NickCrew/Claude-Cortex --skill token-efficiencyAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
One thing to look at
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What its author says it does
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Compressed communication using symbols and abbreviations. Use when context is limited or brevity is needed.
SKILL.md
1.4 KB, 331 tokens by cl100k_base, as published. Nobody here has run it
Token Efficiency
Compressed communication for limited context windows.
Symbol System
Logic & Flow
| Symbol | Meaning |
|---|---|
| → | leads to, implies |
| ⇒ | transforms to |
| ← | rollback |
| & | and |
| | | or |
| » | sequence/then |
| ∴ | therefore |
| ∵ | because |
Status
| Symbol | Meaning |
|---|---|
| ✅ | complete/pass |
| ❌ | failed/error |
| ⚠️ | warning |
| 🔄 | in progress |
| ⏳ | pending |
Domains
| Symbol | Domain |
|---|---|
| ⚡ | performance |
| 🔍 | analysis |
| 🛡️ | security |
| 🏗️ | architecture |
Abbreviations
cfgconfigimplimplementationdepsdependenciesvalvalidationperfperformancesecsecurityerrerror
Examples
Standard:
"The authentication system has a security vulnerability in the user validation function"
Compressed:
auth.js:45 → 🛡️ sec risk in user val()
Standard:
"Build completed, now running tests, then deploying"
Compressed:
build ✅ » test 🔄 » deploy ⏳
When to Use
- Context >75% full
- Large codebase analysis
- Complex multi-step workflows
- User requests brevity