Mostly efficient and action-oriented with no concept-explaining fluff, but the body is long (~410 lines) with recap sections ('Important Constraints: Recap'), overlap between the prose flow tables and the Mermaid diagram, and verbose structured-response field enumerations that could be tightened. Not 1 because it never explains concepts Claude already knows; not 3 because it is not lean and clearly has room to tighten.

Provides concrete, copy-paste-ready invocation templates (subagent_type/description/prompt call examples), explicit prompt-construction rules with [placeholder] substitution, named subagents, structured-response key fields, and a fixed permitted-tools list. Fully executable guidance rather than vague direction.

Sequences are explicit per scale, with pass/fail criteria tables, a re-run rule for failed verifiers, feedback loops (stub_detected -> task-executor, needs_revision -> retry, verification fix cycle), escalation paths, and explicit stop points. Clear checkpoints and error-recovery loops throughout.

SKILL.md serves as an overview and offloads the fullstack flow to a real, clearly signaled one-level-deep reference (references/monorepo-flow.md, verified to exist). However, sizable reference-like content (handoff contracts, structured-response specs) is inline rather than split out. Not 3 because some content that could be separate remains inline; not 1 because references are not deeply nested and navigation is signaled.

Names the domain ('subagent coordination', 'implementation workflows') and some actions ('Guides', 'managing workflow phases', 'determining autonomous execution mode'), but the verbs are abstract rather than a list of concrete distinct actions. Not 3 because it lacks multiple specific concrete actions like 'extract/fill/merge'; not 1 because it does name a domain and actions.

Explicitly states what it does ('Guides subagent coordination through implementation workflows') and when to use it via a 'Use when' clause with concrete triggers. Clearly answers both what and when; matches the anchor example structure.

Includes relevant natural-ish phrases ('orchestrating multiple agents', 'managing workflow phases') but leans on specialized jargon ('autonomous execution mode') and misses common variations users might say. Not 3 because coverage of natural terms is incomplete; not 1 because the keywords are relevant rather than purely technical or generic.

Targets a clear niche (subagent orchestration, autonomous execution mode) with distinct triggers unlikely to fire for unrelated skills. Not 2 because the triggers are specific enough to avoid meaningful overlap.