Conciseness

Most of the body is genuinely skill-specific (rule tables, scan checklist, modality warnings) rather than concepts Claude already knows, but there is avoidable repetition: the ste-lint flag documentation including the identical '--strict... default: advisory, because the linter cannot tell whether two verbs name the same action' sentence appears nearly verbatim in both Process step 3 and Additional Resources, and the structural/lexical split is explained three times (Two Modes, Source and Scope, Core Rewrite Rules). That fits anchor 3 (mostly efficient, could be tightened) rather than anchor 4.

Actionability

Concrete, executable guidance dominates: Do/Don't rule tables with examples, a six-item scan checklist with fixes, a numbered process, a copy-paste output-format table template, and a real bundled linter with documented flags (--json, --baseline, --disable, --strict, --selftest). It stops short of anchor 5 because no literal invocation line (e.g. 'python scripts/ste-lint.py input.md') is given, and the worked before/after examples that would cover common cases are pointed at a file that does not exist in the bundle.

Workflow Clarity

The six-step Process is clearly sequenced with real checkpoints: read for meaning before rewriting, a mechanical linter first pass, an explicit 'Check modality before you commit to a rewrite' gate, and a terminal compliance check (step 6). It misses anchor 5 because there is no post-rewrite verification step confirming meaning and hedges were preserved — the highest-risk failure mode for this skill is only guarded on the input side.

Progressive Disclosure

The section structure is good and references are one level deep and clearly signaled, but scoring against the actual bundle shows that of the three referenced paths, examples/before-after.md (cited in both Source and Scope and Additional Resources) does not exist — there is no examples/ directory — so navigation dead-ends for one of three resources. That broken reference is a concrete organization defect beyond the 'minor gaps' of anchor 4, while the overall structure is still better than the disorganized or buried-reference profile of anchor 3's typical case.

Specificity

The description names concrete text types ("tool descriptions, error messages, inter-agent instructions, system prompts, status reports") but never states the skill's core action — rewriting text into unambiguous simplified English — except obliquely via trigger phrases like "STE100 rewrite" and "plain-language rewrite". It matches anchor 3 (domain plus limited concrete actions) better than anchor 4, which expects several specific actions to be listed as capabilities.

Completeness

The 'when' is answered explicitly and richly ("Use when English text must be parsed without a human to resolve ambiguity... and misreading has a real cost"), with a concrete Triggers list and a negative scope statement ("Not for creative or marketing copy"). The 'what' is present but weak — the rewriting action must be inferred from the trigger terms rather than read as a stated capability — so it sits at anchor 4 rather than anchor 5.

Trigger Term Quality

Trigger coverage is good and includes synonyms across registers ("disambiguate", "STE100 rewrite", "apply Simplified Technical English", "plain-language rewrite", "controlled-language rewrite", "rewrite so an agent cannot misread this") plus natural problem framings ("dense, hedged, or easy to misparse"). It falls short of anchor 5 because common phrasings like "simplify this text", "clarify", or "plain English" are absent.

Distinctiveness Conflict Risk

The controlled-language/STE niche with agent-facing triggers ("STE100 rewrite", "disambiguate") is mostly distinct and the explicit exclusion ("Not for creative or marketing copy") reduces overlap with writing-style skills. It is not anchor 5 because generic triggers like "plain-language rewrite" could plausibly fire for a general editing or simplification skill.