Conciseness

The body is dense and free of general-concept padding, but the focused-route rules (MCP, Agent Skills, certification) are stated three times: in the routing table, again in the step-1 "Interpret the ask" bullets, and again in the closing command-reference paragraph. Mostly efficient but includes repetition that could be consolidated into one statement, matching anchor 3; not 2 because there is no filler or explanation of concepts Claude already knows.

Actionability

Guidance is fully concrete and executable: exact source URL, specific file paths (README.md, glossary/terms.md, learning-paths/*.json, docs/en.md), the full command set (learn, check-understanding <phase>, start-learning, find-your-level), and a copy-paste lesson link template. As an instruction-only skill, the actionable guidance covers the common routing cases, matching anchor 5.

Workflow Clarity

The four-step routing sequence (Interpret → Scan → Answer → no-match fallback) includes an explicit verification checkpoint ("fetch each shortlisted lesson's docs/en.md ... and confirm it actually covers the failing concept before recommending it") and an error-recovery path for the no-match case ("say so plainly and name the closest phase. Never invent a lesson"). Clear sequence with explicit validation and failure handling matches anchor 5.

Progressive Disclosure

No bundle files exist, and the body is well-sectioned with clear headers pointing to one-level-deep external sources (repo README, glossary, per-route manifests) each with a clear local-first/raw-fallback rule. Not 5 because the focused-route details are inlined twice (routing table plus step-1 bullets) rather than consolidated or split, leaving a minor organization gap; not 3 because navigation is easy and references are clearly signaled.

Specificity

"points at the exact lessons that teach it, plus the right next command" names the domain and two concrete actions, which sits at the 4 anchor ("several specific actions; minor gaps"), but the rubric's voice penalty applies for the second-person phrase "a bug you are fighting" (−1). Not a 2 because it is far more concrete than generic domain-naming like "Processes PDF files".

Completeness

Explicitly answers "what" ("Topic router... points at the exact lessons that teach it, plus the right next command") and "when" via a concrete, explicit trigger list ("Trigger phrases: ..."). Matches the anchor 5 example structure exactly; a 4 would require the "when" to be less explicit.

Trigger Term Quality

Eight explicit natural trigger phrases ("where do I learn", "I'm stuck on", "what should I do next", "teach me MCP", "teach me Agent Skills", "where do I prepare for a Claude certification") comprehensively cover the natural ways a learner would ask for routing, including synonyms across topic, struggle, meta, and certification intents. Not a 4 because no common variation for this domain is obviously missing.

Distinctiveness Conflict Risk

The niche (curriculum wayfinding for one specific course) is clear and most triggers are distinct, but "teach me MCP" and "teach me Agent Skills" risk overlapping with the sibling learn-mcp and learn-agent-skills skills. Mostly distinct with minor overlap risk against closely related skills, i.e. anchor 4; not 5 because those phrases would plausibly fire both this router and the focused skills.