Conciseness

The pattern sections are lean and code-first, but the 'Typesafe / Jev' section is ~17 lines of dense spec prose (threshold defaults, 0.01 probability tolerance rules, floating-point summation allowances) that reads like a compressed reference dump. This matches 'mostly efficient but could be tightened' rather than the minor-trim level 4; the rest of the body is not padded, so it stays above 2.

Actionability

Concrete Go snippets cover the common cases (string contract, class field, native AxSignature record, ToJSONSchema, signature reuse) and point to runnable examples. Gaps keep it below 5: snippets are fragments with undefined variables (client, inputs in program.Forward), the Jev section describes API calls (trueThreshold, describe_values) with no code at all, and 'Relevant API Surface' lists axllm.S/axllm.FieldType which conflicts with the ax. prefix used in every example.

Workflow Clarity

A pattern-reference skill with clear organization (When To Use, Core Pattern, More Patterns, Guardrails) and explicit checkpoints in Guardrails ('Start from package examples for exact native syntax before inventing a new call shape'). No destructive or batch operations require validation loops, but the Jev usage flow is unsequenced and there is no error-recovery guidance, so it does not reach 5.

Progressive Disclosure

References are listed under Package Facts (API.md, axir-api.json, examples/, external URL), but no bundle directories (references/, scripts/, assets/) exist, so those paths are not resolvable within the skill. Meanwhile the dense Jev spec content that clearly belongs in a separate reference file is inlined. This fits 'some structure but content that should be separate is inline'; structure is present (above 2) but organization gaps and unresolvable paths keep it below 4.

Specificity

Lists several concrete actions — 'string signatures, field descriptors, JSON schema output, validation, and typed tool argument shapes' — matching the anchor for several specific actions with minor gaps; it omits capabilities the body covers (class outputs, native constraint records), so it falls short of comprehensive 5.

Completeness

Explicitly answers both: what ('string signatures, field descriptors, JSON schema output, validation, and typed tool argument shapes') and when ('Use when writing Go code with `github.com/ax-llm/ax/packages/go`') with concrete trigger phrases, matching the anchor for clearly and explicitly answering both.

Trigger Term Quality

Good natural keyword coverage: 'Go code', 'string signatures', 'JSON schema', 'validation', plus the package import path users of this library would mention. A few natural terms are missing (e.g., 'Ax', 'prompts', 'schema generation'), keeping it below 5.

Distinctiveness Conflict Risk

Pinned to a single Go package by import path and language, giving it a clear niche with distinct triggers and minimal conflict risk, even against sibling skills for the same library in other languages.