Conciseness

The body is mostly command-driven and efficient, but the action-discovery command is documented twice with inconsistent forms ('Searching for actions' uses `membrane action list` while 'Popular actions' repeats it as `npx @membranehq/cli@latest action list`), and the 'Apto Payments Overview' entity list is a contentless stub. This fits anchor 3 ('mostly efficient but includes some unnecessary explanation or could be tightened') rather than anchor 4, since the duplication and stub sections are trimmable, not merely minor over-explanation.

Actionability

Guidance is largely copy-paste executable: install command, login flow including the headless `login complete <code>` path, `connection ensure`, polling with `--wait`, `action run` with `--input` JSON, and a full proxy flag table. It falls short of anchor 5 because 'Popular actions' promises examples but lists none — no concrete Apto action (e.g. list cards, get transactions) is ever shown — leaving a minor gap in covering the common cases.

Workflow Clarity

The install → login → connect → poll → discover → run sequence is present with a state-based feedback loop (READY / CLIENT_ACTION_REQUIRED / CONFIGURATION_ERROR handling and re-polling), but the flow references 'Step 2' twice with no Step 2 defined, has a '1b' heading with no '1a', and provides no verification or caution steps for financially consequential operations (action runs and arbitrary proxy POST/PUT/DELETE against a payments API). Per the destructive-operations cap, a workflow on a payments API without validation cannot score above 3.

Progressive Disclosure

There are no bundle files (no references/, scripts/, or assets/), so the skill is self-contained; at ~140 lines with well-organized sections (Install, Authentication, Connecting, Searching, Running actions, Proxy, Best practices) most content is appropriately placed in a single overview. Minor organization gaps — the duplicated action-list sections and the stub entity list — keep it at anchor 4 rather than 5.

Specificity

The description names the domain ("Apto Payments integration") but the actions — "Manage data, records, and automate workflows" — are generic boilerplate that could describe any connector, with no concrete operations like creating cards or listing transactions. This matches the anchor 'Names the domain but actions are minimal or generic' and falls short of level 3, which requires 1-2 genuinely concrete actions.

Completeness

Both parts are present: a what ("Manage data, records, and automate workflows") and an explicit when ("Use when the user wants to interact with Apto Payments data"). However, the when clause merely restates the domain and the what is vague, so it fits anchor 4 ('when' could be more explicit or specific) rather than anchor 5's concrete trigger phrases. The explicit 'Use when...' clause keeps it above the cap of 3.

Trigger Term Quality

"Apto Payments" is a natural term a user would say, but the remaining keywords ("data", "records", "workflows") are generic, and common synonyms a user would actually use — payment cards, card programs, transactions, issuing — are missing. It has some relevant keywords but is missing common variations, matching anchor 3 rather than anchor 4's 'good keyword coverage'.

Distinctiveness Conflict Risk

The named platform gives it a clear niche with minimal conflict risk against unrelated skills, but the generic tail "Manage data, records, and automate workflows" is likely identical across sibling Membrane connector skills, creating minor overlap risk with closely related skills. This matches anchor 4 rather than anchor 5, whose example includes distinct concrete triggers.