Conciseness

The bulk of the body is lean and pattern-driven — short bullets ("Package Facts"), minimal framing, and code-first sections ("Core Pattern", "More Patterns"). It is not a 5 because the Typesafe/Jev section packs dense, hard-to-parse prose ("The service context limit covers state, questions, and criteria; Ax never truncates or pretends to count native tokens exactly."), and the "Relevant API Surface" section wastes tokens on a literally duplicated bullet ("- Tools: `axllm::Tool`, `axllm::Tool`").

Actionability

Most patterns give concrete, real-API code ("axllm::s(\"question:string -> answer:string\")", "axllm::to_json_schema(axllm::Core::get(sig, \"outputs\"))", "axllm::Core::record_new(...)"), which is close to copy-paste ready. It misses a 5 because several fragments depend on undefined variables (`signature`, `client`, `inputs`) with no complete program shown, and the entire Typesafe/Jev section — roughly a third of the body — gives API names in prose with zero code examples.

Workflow Clarity

There is a clear progression from simple string contract to class output, native constraints, validate ("axllm::Core::validate_signature(signature)"), render as JSON schema, and reuse in AxGen ("Pass the native signature record directly into AxGen"), with guardrails directing the agent to real examples first. It is not a 5 because the sequence is implicit (a pattern catalog rather than an ordered procedure) and the Typesafe section is unsequenced prose with no checkpoints.

Progressive Disclosure

The body cites "API.md and axir-api.json", "axir-capabilities.json", "examples/", and "src/examples/cpp/generation/", but no such bundle files or directories exist in this skill — the references dangle. Combined with the dense 17-line Typesafe spec inlined in SKILL.md that clearly belongs in a separate reference file, this fits the anchor of some structure but content that should be separate is inline and references that do not resolve clearly.

Specificity

The description lists several concrete capability areas — "string signatures, field descriptors, JSON schema output, validation, and typed tool argument shapes" — within a clearly named domain ("writing C++ code with `axllm`"). It stops short of a 5 because the coverage has gaps: the sizable Typesafe/Jev scoring and native-client functionality documented in the body is not mentioned at all.

Completeness

The "when" is explicit and specific ("Use when writing C++ code with `axllm` for..."), and the "what" is conveyed through the concrete "for" list. It falls short of a 5 because the "what" is only implied by that list rather than stated as a declarative capability sentence (compare the anchor-5 example, which pairs "Extract text and tables..." with an explicit "Use when..." clause).

Trigger Term Quality

It includes natural terms a user of this package would actually say — "C++", "axllm", "signatures", "JSON schema", "validation", "tool argument shapes" — giving good keyword coverage. It is not a 5 because no synonyms or variations are offered (e.g., "output schema", "schema generation", "typed outputs"), and the criteria-match anchor-5 example is a synonym list, which this lacks.

Distinctiveness Conflict Risk

The niche is unambiguous: a specific generated package (`axllm`) in a specific language (C++) with distinctive triggers ("string signatures", "field descriptors", "typed tool argument shapes"). Other skills would not fire on these terms, so conflict risk is minimal, matching the clear-niche anchor.