Conciseness

The body is mostly lean (tables, pointer sections, tight code blocks), but the BatchSpanProcessor flush rationale is repeated three times (Step 2 note, Worked example, Anti-patterns row) and the intro quotes Jaeger docs explaining what all-in-one is. These minor over-explanations match the 4 anchor rather than the 5 anchor's 'every token earns its place'.

Actionability

A pinned, copy-paste-ready `docker run` command with a port table, complete OpenTelemetry SDK configuration, and a fully concrete worked example with real query params (service, operation, lookback, limit) and tag assertions cover the common cases. The app-specific helpers (use_tracer, create_order) are inherent to a test example, not a gap in executable guidance.

Workflow Clarity

"How to use" gives 5 numbered steps explicitly cross-linked to the Step 1/Step 2/Worked example sections, the force_flush + settle checkpoint before querying is explicit and justified, and the Anti-patterns table acts as a failure-mode checklist with fixes (a feedback loop for the missed-span race). This matches the 5 anchor's clear sequence with explicit validation and error recovery.

Progressive Disclosure

SKILL.md is a genuine overview inlining only the essentials (docker run, basic SDK config, one worked example), while the full query API, parent-child/duration assertions, CI wiring, and Zipkin/Tempo specifics live in three real, verified, one-level-deep reference files, each clearly signaled with a summary of its contents. No nested references exist, matching the 5 anchor.

Specificity

"Runs the backend in CI, queries traces by service and operation, and asserts on spans, parent-child links and durations" lists multiple concrete actions that comprehensively cover the skill's run-query-assert workflow. It exceeds the 4 anchor because no meaningful action coverage is missing.

Completeness

The explicit trigger clause "Use when tests must prove a request produces the expected spans across services in a running Jaeger, Zipkin or Grafana Tempo backend" answers when, and the second sentence concretely answers what. Both are explicit with concrete trigger phrases, matching the 5 anchor rather than the 4 anchor's 'when could be more explicit'.

Trigger Term Quality

Natural terms present include "tests", "spans", "traces", "Jaeger", "Zipkin", "Grafana Tempo", and "CI", giving good coverage. It falls short of the 5 anchor because common synonyms users would say — "distributed tracing", "OpenTelemetry"/"OTel" — are absent from the description.

Distinctiveness Conflict Risk

Naming three specific tracing backends and scoping to cross-service span verification in a running backend carves out a clear niche with minimal conflict risk. Only mild adjacency to an in-process OpenTelemetry assertion skill exists, which the 'running backend' and 'across services' scoping distinguishes.