Skill Crossroads — mailpit-integration

Skill Crossroads mailpit-integration
rubric v1.2 · deterministic

overall

Correctness & Structure 100 pass

Triggering & Discoverability 85 1 warn

Clarity & Instructions 100 pass

Token & Context Cost 91 1 warn

Safety & Security 75 1 fail

Verifiability & Maintainability 80 1 warn

Top fixes — ranked by score impact

✗ SAFETY-01 No hardcoded secrets

SKILL.md:205— → matches Assigned credential literal pattern

Possible hardcoded secret (Assigned credential literal) — Pass*************************!"

Pass*************************!"

Fix Remove the secret from source, rotate it, and reference it via an environment variable instead.

⚠ 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.

Test email sending locally using Mailpit with .NET Aspire. Captures all outgo…

Fix State the trigger explicitly: 'Use when the user says "…", "…", or wants to …'.

⚠ TOKEN-02 Progressive disclosure

SKILL.mdeverything inlined in SKILL.md → 455 body lines, 0 supporting files

Large SKILL.md (455 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.

⚠ VERIFY-01 Evals or tests present

SKILL.md:348the skill can be verified → a prose verification step, but no runnable evals/ or tests/

Manual verification only — add eval prompts with expected outcomes to make it checkable.

### Verify

Fix Add an evals/ folder with 2–3 test prompts and the expected assertions.

★ scores higher than ≈22% of 208 public skills (deterministic rubric v1.2 sample, 2026-09)

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