Conciseness

The pattern sections are lean, but the "Typesafe / Jev" section is a dense spec dump that a Go-focused skill does not need, e.g. "C++ uses valueDescriptions on its existing field descriptors", "only TypeScript can infer literal question keys", and the multi-language naming enumeration "system_one / systemOne / SystemOne and list_models / listModels / ListModels". This fits 'mostly efficient but includes some unnecessary explanation or could be tightened' — not 4, because the padding is a substantial block rather than minor instances.

Actionability

Concrete, executable Go snippets cover the common cases: `sig := ax.NewSignature("question:string -> answer:string")`, `ax.NewAx("questionText:string -> answerText:string", nil)`, the native `ax.AxSignature{...}` struct, and `program.Signature = signature; output, err := program.Forward(ctx, client, inputs, nil)`. It is not 5 because the "Relevant API Surface" section contradicts the examples ("Signatures: `axllm.S`, `axllm.FieldType`, `axllm.AxSignature`" vs. the `ax` import alias, with `axllm.S`/`axllm.Fn` never used), and the large Typesafe section gives settings ("Set provider trueThreshold ... to a finite value in [0,1]") with no executable snippet showing how.

Workflow Clarity

The core flow is sequenced implicitly across sections ("Attach the native signature to AxGen before the forward call", "Start from the complete programs under `examples/`"), but there is no consolidated step sequence, and the Typesafe/Jev section (~40% of the body) presents rules with no usage workflow at all. This matches 'sequence present but checkpoints missing or implicit'; it is above anchor 2 because the main pattern order is discernible and no destructive operations require validation.

Progressive Disclosure

External materials are named ("Package API docs: `API.md` and `axir-api.json`", "Runnable examples: `examples/`", "src/examples/go/generation/"), but none of these files exist in the skill bundle, and the lengthy inline Typesafe/Jev specification is content that clearly belongs in a separate reference file. This matches 'references present but not clearly signaled; content that should be separate is inline'; it is not 4 because the split between inline and referenced material is poorly drawn and the referenced paths are unverifiable.

Specificity

The description lists multiple concrete capabilities — "string signatures, field descriptors, JSON schema output, validation, and typed tool argument shapes" — for a precisely named domain (Go code with `github.com/ax-llm/ax/packages/go`). This matches the anchor 'lists multiple specific concrete actions; comprehensive coverage'; it is not the level below because coverage of the package's feature surface is broad, not just 1-2 actions.

Completeness

It has both a "what" (the listed capabilities: string signatures, field descriptors, JSON schema output, validation, typed tool argument shapes) and an explicit "when" ("Use when writing Go code with `github.com/ax-llm/ax/packages/go`"). It does not reach 5 because the "what" is folded into the "when" clause rather than stated as its own concrete action sentence, as in the anchor-5 example; it is clearly above anchor 3 since the "Use when..." trigger guidance is explicit, not merely implied.

Trigger Term Quality

Natural terms a developer would use are present ("writing Go code", "signatures", "JSON schema", "validation", "tool argument shapes", the package path itself), giving good keyword coverage. It falls short of the anchor-5 example because synonyms and common variations (e.g., "Ax", "AxGen", "input/output contracts", "prompts") are missing; it is above anchor 3 because the included terms are the natural phrases for this niche rather than generic ones.

Distinctiveness Conflict Risk

The trigger is anchored to the specific package path `github.com/ax-llm/ax/packages/go` plus Go-specific feature terms, giving it a clear niche with minimal overlap risk against generic Go or schema skills. It matches the anchor 'clear niche with distinct triggers; minimal conflict risk' and is not level 4, which requires only 'minor overlap risk'.