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Multi-purpose utility for CRUX compression workflows. Provides token estimation and checksum calculation. Use when estimating tokens for compression, comparing file sizes, or getting checksums for sourceChecksum tracking.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
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| name | CRUX-Utils |
| description | Multi-purpose utility for CRUX compression workflows. Provides token estimation and checksum calculation. Use when estimating tokens for compression, comparing file sizes, or getting checksums for sourceChecksum tracking. |
Multi-purpose utility for CRUX compression workflows. Provides deterministic tools for token estimation and checksum calculation.
# Token count estimation
bash .cursor/skills/CRUX-Utils/scripts/crux-utils.sh --token-count <file>
# Compare source vs CRUX (ratio mode)
bash .cursor/skills/CRUX-Utils/scripts/crux-utils.sh --token-count --ratio <source> <crux>
# Get checksum for sourceChecksum frontmatter
bash .cursor/skills/CRUX-Utils/scripts/crux-utils.sh --cksum <file>
--token-count <file>Estimate token count for a single file.
Output:
=== Token Estimate: example.md ===
Prose tokens: 397
Code tokens: 0
Special tokens: 0
---
TOTAL TOKENS: 397
--token-count --ratio <source> <crux>Compare source file vs CRUX file and calculate compression ratio.
Output:
=== Compression Ratio Analysis ===
=== Token Estimate: source.md ===
...
=== Token Estimate: source.crux.mdc ===
...
=== Compression Summary ===
Source tokens: 397
CRUX tokens: 140
Ratio: 35.2% of original
Reduction: 64.8%
Target (≤20%): NO
--cksum <file>Get checksum of a file, formatted for CRUX frontmatter sourceChecksum field.
Output:
=== Checksum: example.md ===
Checksum: 1234567890
---
FRONTMATTER: "1234567890"
| Content Type | Chars/Token | Notes |
|---|---|---|
| Prose (markdown) | 4.0 | English text, headers, lists |
| Code blocks | 3.5 | More symbols, shorter identifiers |
| Special chars | 1.0 | CRUX Unicode symbols |
CRUX delimiters and symbols that count as 1 token each:
« » ⟨ ⟩→ ← ≻ ≺⊤ ⊥ ∀ ∃ ¬ ∋⊳ ⊲≥ ≤ ≠Δ Ρ Λ Π Κ Γ Φ Ω⊛ ◊ θBoth modes produce identical output for identical input:
For compression tasks:
--cksum <source> → use FRONTMATTER value for sourceChecksum--token-count <source> → use for beforeTokens--token-count <crux> → use for afterTokens--token-count --ratio <source> <crux> → check Target (≤20%)