Skill Crossroads csharp-concurrency-patterns
rubric v1.2 · deterministic
B 84.1/100 overall
Correctness & Structure 67 1 fail
Triggering & Discoverability 85 1 warn
Clarity & Instructions 100 pass
Token & Context Cost 91 1 warn
Safety & Security 100 pass
Verifiability & Maintainability 53 1 fail

Top fixes — ranked by score impact

✗ STRUCT-05 Supporting-file references resolve
SKILL.md:20references `advanced-concurrency.md` → no such file or directory in the skill
Reference to `advanced-concurrency.md` does not resolve to a file in the skill directory.
advanced-concurrency.md
SKILL.md:179references `advanced-concurrency.md` → no such file or directory in the skill
Reference to `advanced-concurrency.md` does not resolve to a file in the skill directory.
advanced-concurrency.md
Fix Add the missing file(s), fix the path, or remove the dead reference.
✗ VERIFY-01 Evals or tests present
SKILL.md:1the skill works → no evals/, tests/, or verification section found
No way to prove the skill does what it claims.
Fix Add an evals/ folder (test prompts + expected outcomes) and a '## Verify' step in the body.
⚠ TRIGGER-03 Invocation cues in the description
SKILL.md:1description will match user requests → no explicit cue ('use when …', 'triggers on …', quoted user phrases) found
Pure what-it-does prose — the model has to guess when to invoke it.
Choosing the right concurrency abstraction in .NET - from async/await for I/O…
Fix State the trigger explicitly: 'Use when the user says "…", "…", or wants to …'.
⚠ TOKEN-02 Progressive disclosure
SKILL.mdeverything inlined in SKILL.md → 270 body lines, 0 supporting files
Large SKILL.md (270 lines) with no supporting files — all of it loads every time the skill fires.
Fix Move heavy reference material into supporting files and link to them, so the model loads it only when needed.
★ scores higher than ≈12% of 208 public skills (deterministic rubric v1.2 sample, 2026-09)

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