Conciseness

Nearly every sentence carries Lexio-specific facts Claude cannot know ("Sending an offset answers `400 offset_not_allowed`", "`422 IDEMPOTENCY_KEY_REUSED`", "120 requests/min overall; writes 60/min", "Events are kept 30 days"), with no explanation of REST, curl, or auth basics — lean and dense, every token earning its place. It sits at anchor 5 rather than 4 because no over-explanation could be trimmed.

Actionability

The bash example is copy-paste ready (key check via `GET /organization`, `GET /availability` with real query params, `POST /quotes` with body and `Idempotency-Key: $(uuidgen)`), and every workflow step names exact endpoints, fields, and headers ("`POST /rentals` with `quoteId` and the holder … plus your `partnerReference`"). Anchor 5 fits because the specific examples cover the common cases fully and the OpenAPI spec is designated the source of truth for the rest.

Workflow Clarity

Three clearly numbered workflows each carry explicit checkpoints ("store it, then page through", "store the returned `nextCursor` (always present, even on an empty page)", "Upload inspection photos first", user confirmation plus "Prefer `?dryRun=true` first" before money-touching writes), and the idempotency section is a complete error-recovery feedback loop with per-code actions ("`409 IDEMPOTENCY_ALREADY_APPLIED` … do not resend; read the resource it points to", "Never retry blindly"). The destructive/batch validation cap does not apply because validation and confirmation steps are present.

Progressive Disclosure

The body is a well-sectioned overview that inlines only operationally essential material and delegates exhaustive detail one level deep through clearly signaled references — "OpenAPI 3.1 spec … source of truth for paths, fields and error codes", "Full table: https://docs.lexio.rent/authentification.md", "Details:", "Walkthrough for partner keys:", "Lifecycle:" — with no nested references and easy navigation via descriptive headers. Anchor 5 fits: content is appropriately split and every reference is labeled with what it contains.

Specificity

The description names two concrete actions ("building or debugging an integration") and comprehensively lists the API's capability areas — "availability and prices, quotes, rentals and amendments, pick-up and return, payments and invoices, customers, fleet, maintenance, the pricing catalogue, and syncing changes through the GET /events feed" — with no coverage gaps, matching the anchor-5 example's breadth rather than anchor 4's "minor gaps".

Completeness

It explicitly answers both questions with concrete trigger phrasing: "Use when building or debugging an integration with the Lexio Rent API v1" (when) and "the REST API of the Lexio vehicle rental management software. Covers …" (what), in third-person voice — a clear anchor-5 match, above anchor 4 where the "when" could be more explicit.

Trigger Term Quality

It includes the natural terms a user would say ("Lexio Rent API", "rental", "integration", "quotes", "availability", "payments", "fleet"), but common domain synonyms such as "booking" or "reservation" — words the body itself uses ("booking platform") — are missing, which fits anchor 4 ("good keyword coverage; a few natural terms missing") better than anchor 5's synonym-inclusive coverage.

Distinctiveness Conflict Risk

The description is anchored to a named product with version and URL ("Lexio Rent API v1", "https://api.lexio.rent/api/external/v1"), giving it a clear niche with distinct triggers and minimal conflict risk with any other skill; the generic resource words are all subordinated to the Lexio anchor.