Conciseness

The flow-pattern sections are lean and dense with package-specific semantics Claude would not know ("An `ax.AxCachingFunction` under `"cachingFunction"` ... a hit runs no node and records no span or metric"), but the ~35-line "Astra Session Work" section is a spec dump spanning five languages ("add_child_agent(namespace, name, child) in Python/C++, AddChildAgent in Go, addChildAgent in Java, and with_child_agent in Rust") that largely falls outside the description's stated scope and could be tightened or split out. Not 2 because nothing explains concepts Claude already knows and the flow half is efficient; not 4 because a large fraction of the body is over-stuffed prose.

Actionability

The flow sections provide real, complete-syntax Go covering the common cases: `ax.NewFlow(...).Execute("draft", draft, ...).Returns(...)`, `parallelFlow.Forward(ctx, client, map[string]ax.Value{...}, nil)`, and `StreamingForward` iteration. Not 5 because node programs (`research`, `join`, `critique`, `revise`) and the `client`/`cache` values are never constructed, the entire Astra section has no executable code, and "Relevant API Surface" (`axllm.NewFlow`, `axllm.AxFlow`) directly contradicts the `ax.NewFlow` used in every example. Not 3 because the majority of the content is genuinely executable guidance with realistic values rather than pseudocode.

Workflow Clarity

The patterns progress sensibly (core pattern → typed programs → branching → fan-out/join → refinement → run/stream/cache), but there is no explicit build-run-verify sequence; the only verification guidance lives in Guardrails ("Use `no-key` examples for deterministic local checks and provider request mapping") rather than as checkpoints inside a workflow. Not 4 because no clearly sequenced procedure with checkpoints exists; not 2 because the progression and guardrail checks are present.

Progressive Disclosure

References to `API.md`, `axir-api.json`, `axir-capabilities.json`, and `examples/` are scattered through "Package Facts" and prose ("Start from the complete programs under `examples/`", "the provider-backed Astra examples under `src/examples/go/generation/`") rather than gathered in a clearly signaled navigation section, and the dense multi-language "Astra Session Work" spec is inlined where a separate reference file belongs. Not 2 because the document has clear section structure and the flow patterns are appropriately inline; not 4 because substantial content that should be separate is inline and references are not presented as well-signaled links.

Specificity

The description enumerates several concrete capability areas anchored to an exact package path ("flows, nodes, program graphs, nested programs, dynamic options, caching, and optimizer components" for `github.com/ax-llm/ax/packages/go`), which exceeds the 1-2 items of a score-3 anchor. It falls short of 5 because it offers only one action verb ("writing") — the capabilities are listed as topics rather than concrete actions like "compose flows, run and stream them, cache outputs".

Completeness

It has an explicit trigger clause ("Use when writing Go code with ... for flows, nodes, ...") and the "for" list conveys scope, so both what and when are present. Not 5 because the "what the skill does" is never stated as an action — the reader must infer its function from the trigger's object list; there is no equivalent of "Compose and run typed LLM workflows".

Trigger Term Quality

Natural terms a user of this package would say are present: "Go code", "flows", "nodes", "caching", plus the exact import path `github.com/ax-llm/ax/packages/go`. Not 5 because common synonyms and product names ("Golang", "Ax", "AxFlow", "agent workflows") are missing; clearly above the generic-keyword anchors of 3.

Distinctiveness Conflict Risk

The description pins to one exact package import path (`github.com/ax-llm/ax/packages/go`) and its specific subsystem vocabulary, giving it a clear niche with distinct triggers and minimal risk of firing for unrelated skills.