Conciseness

The body contains no padding about concepts Claude already knows — it is dense, package-specific fact throughout — but the flat ~35-symbol "Relevant API Surface" list and the repeated triple-convention naming ("system_one / systemOne / SystemOne", "describe_values / describeValues / DescribeValues") are bulk that could be tightened or trimmed. This is more than the 'minor instances' of anchor 4, though well short of anchor 2's padded explanations.

Actionability

The Core Pattern is real, executable C++ covering model construction, a signature with boolean/class criteria descriptions, and a forward call, and the constraint guidance is exact (trueThreshold in [0,1] default 0.5, 0.01 inclusive tolerance, 1–255 Choice labels, 2–10 Score levels). It falls short of anchor 5 because the native client (system_one/list_models), Score/Choice criteria syntax, and the hybrid two-program pattern are discussed only in prose with no code.

Workflow Clarity

Decision routing is clear ("Use Jev for typed decisions…", "Use native questions for probabilities…", "Compose a separate generative program for prose or tools") and the Guardrails section gives concrete ordering advice ("Start from package examples for exact native syntax"). No validation checkpoints exist, but there are no destructive or batch operations to validate; the hybrid path is delegated entirely to an external examples link, a minor gap that keeps it below 5.

Progressive Disclosure

Section organization is good and Package Facts clearly signals where the package docs live ("API.md", "axir-api.json", "examples/"), but the long inline "Relevant API Surface" symbol dump is content that belongs in a separate reference file, and the bundle ships no reference files at all despite clearly splittable material. This matches anchor 3 ('content that should be separate is inline'), short of anchor 4's appropriately-placed bulk content.

Specificity

The description names the domain ("C++ code with `axllm`") and enumerates concrete capability areas ("Typesafe Jev boolean/class signatures, value descriptions, configurable Noul conversion, native Noul/Choice/Score, structured criteria and hybrid generation"), but these are all jargon noun-phrases with no action verbs, so it never states what the skill actually does. It is more specific than anchor 2 (domain-only) but lacks the 'several specific actions' required by anchor 4.

Completeness

The 'when' is explicit and concrete ("Use when writing C++ code with `axllm`"), and the 'what' is conveyed through the feature list, but the skill's actual function (guiding API usage for these features) is only implied by the prepositional enumeration rather than stated as a clear action. Not the fully explicit what+when pairing of anchor 5, but clearly above anchor 3's weakly-implied 'when'.

Trigger Term Quality

Good keyword coverage of natural domain terms: "C++", "axllm", "typesafe", "Jev", "boolean", "class", "Noul", "Choice", "Score", "criteria", and "hybrid generation" — the vocabulary a user of this package would naturally say. It falls short of anchor 5 because common variations and synonyms (e.g., "type-safe", "scoring", "evaluation") are absent.

Distinctiveness Conflict Risk

"C++ code with `axllm`" combined with niche markers like "Typesafe Jev" and "Noul" defines a clear, narrow specialization with distinct triggers and minimal overlap risk with any generic skill.