Conciseness

Lean and efficient: a labeled output template plus a one-line guardrail, with no padding or explanation of concepts Claude already knows.

Actionability

Provides a concrete, copy-paste-ready output schema with labeled sections (LANGUAGE_PROBE, CHECKS, REPRODUCER, PATCH_TARGETS, VERIFY); the per-item placeholders are appropriate for a trace-dependent template, though they remain guidance rather than executable code.

Workflow Clarity

A simple single-purpose skill whose single action (emit the structured probe) is unambiguous; the embedded VERIFY section and the "Do not invent files or dependencies" guardrail add explicit safety, and the skill is neither destructive nor batch so no validation cap applies.

Progressive Disclosure

Under 50 lines with no external references needed and no bundle files present; content is well-organized into a header, template block, and closing guardrail, satisfying the simple-skill exception.

Specificity

Names several concrete deliverables — "failure-contract checks, reproducer guidance, and patch targets" — giving clear action coverage, though the actions are template categories rather than a fully enumerated list.

Completeness

Explicitly answers both what (internal helper producing failure-contract checks, reproducer guidance, patch targets) and when ("Use when a stack trace language is unknown and the workflow needs...") with concrete trigger phrasing.

Trigger Term Quality

"stack trace language is unknown" and "language-neutral" are natural phrases a user working with traces would say, but a few common synonyms or variations are absent.

Distinctiveness Conflict Risk

Scoped to a clear niche (language-unknown stack-trace probing as an internal helper for a named parent skill) with distinct triggers and minimal overlap with other skills.