The body is lean, assumes Claude's competence (no priming on what OTel or Beeline are), and every section earns its place; the minor restatement in the Status section does not rise to the 'mostly efficient but could be tightened' level 2 threshold.

Provides executable code blocks for Go/Python/Node, a concrete minimum-version table, specific env vars (OTEL_SERVICE_NAME), and explicit API mappings (startSpan() -> tracer.start_span(), addField() -> span.set_attribute()), matching the 'fully executable, copy-paste ready' anchor rather than the pseudocode level 2.

A clearly sequenced two-phase workflow with numbered steps, explicit 'Verify' checkpoints, a bold gating rule, and checklists for error-prone migration, matching the 'clear sequence with explicit validation steps' anchor; it is not level 2 because checkpoints are explicit rather than implicit.

The SKILL.md is a clear overview that defers full per-language migration code and complete W3C config to real, one-level-deep reference files (verified present in ./references/), clearly signaled via a Reference Files section, matching the 'clear overview with well-signaled one-level-deep references' anchor rather than the inline/under-organized level 2.

Lists multiple concrete actions — migrating per-language Beelines to OpenTelemetry SDKs and enabling W3C trace propagation — matching the 'lists multiple specific concrete actions' anchor rather than the partial domain-only level 2.

Explicitly states what it does (step-by-step Beeline-to-OTel migration) and when to use it via an explicit 'Trigger phrases:' clause and a catch-all 'or any request about migrating' sentence, satisfying the 'clearly answers both what AND when' anchor rather than capping at 2.

Broad natural-language coverage ('migrate from Beelines', 'Beeline EOL', 'switch from Beeline to OTel', plus per-language variants) that a user would actually say, matching the 'good coverage of natural terms' anchor; it is not the partial level 2 because common variations are present.

Targets a narrow, well-defined niche (Honeycomb Beeline EOL migration) with distinct triggers unlikely to fire for unrelated skills, matching the 'clear niche with distinct triggers' anchor rather than the overlapping level 2.