Conciseness

The body is three lean lines — "Reference files for the AI Signals setup skills; each solution reads `../shared/playbook.md` first." and "This folder is registered as a skill only so the marketplace ships it (Treasure AI Studio installs registered skill folders only). Nothing to run here." Every token earns its place; no padding and no explanations of concepts Claude already knows. Not 4, because there is nothing left to trim.

Actionability

The concrete guidance is limited to one real path and reading order ("each solution reads `../shared/playbook.md` first") plus the explicit disposition "Nothing to run here." This matches anchor 3 (some concrete guidance but incomplete) rather than 4 (mostly executable guidance), because the body gives no listing or description of the other shared files (workflow, agent, docs patterns) that a consuming skill would need to act on.

Workflow Clarity

This is a single-purpose skill and its one action is unambiguous, stated plainly: nothing runs here, and consuming solutions read the playbook first. Per the simple-skill exception, that merits a 5; no destructive or batch operations exist, so the validation cap does not apply. Not 4, because there are no gaps in the one thing a reader needs to know.

Progressive Disclosure

The body is a clear overview with one clearly signaled reference ("../shared/playbook.md"). Not 5: the description promises "playbook, workflow, agent and docs patterns" files, but the body neither lists nor links them — navigation to the actual shared content relies on the consumer exploring, and the single path is written from the consuming skill's perspective rather than this folder's. Not 3: nothing is inlined that belongs in a separate file, and the reference that does exist is clearly signaled.

Specificity

"Shared reference files (playbook, workflow, agent and docs patterns)" and "read by the fde-rfm, fde-nbp, fde-mta, fde-nba-scores and fde-classifier setup skills" enumerate the concrete artifacts and all five consumers by name. This sits between anchor 3 (1-2 concrete items) and anchor 5 (comprehensive capability coverage): everything stated is specific, but it describes contents rather than executable actions.

Completeness

What is clear ("Shared reference files (playbook, workflow, agent and docs patterns)") and when is explicit ("Not used directly — to set up a model, use one of those skills"), which qualifies as equivalent explicit trigger guidance, so the missing-'Use when' cap does not apply. Not 5 because there are no concrete user-facing trigger phrases; not 3 because the 'when' is stated outright rather than merely implied.

Trigger Term Quality

The only natural phrase is "to set up a model, use one of those skills"; the remaining keywords are internal skill names (fde-rfm, fde-nbp, fde-mta, fde-nba-scores, fde-classifier) rather than phrases a user would naturally say. Matches anchor 2 (one or two generic keywords, natural phrases missing); not 3, because there are no relevant keyword variations — only proper nouns and jargon.

Distinctiveness Conflict Risk

"Not used directly — to set up a model, use one of those skills" plus the five named consumer skills carve out a clear niche with explicit redirection, and the folder is non-invocable, so conflict risk is minimal. Not 4, because the boundary against the closely related setup skills is explicitly stated rather than left implicit.