Conciseness

The body is mostly lean and directive (no basics-of-Stripe explanations, no padding), but it embeds time-sensitive version data outside any 'old patterns'/'deprecated' section: "Latest Stripe API version: 2026-09-30.endive", a 7-row latest-SDK-versions table, and a second dated API version ("2026-03-25.dahlia") in the integration_identifier rule. Per the rubric guideline, version numbers and dates in the main body penalize conciseness; this is more than a trimmable minor instance, matching anchor 3 ('mostly efficient but... could be tightened') rather than anchor 4's 'minor instances'.

Actionability

Guidance is largely executable: exact commands ("npm i -g @stripe/cli", "stripe sandbox create", "stripe whoami --format json"), exact parameter names and values ("payment_method_types: ['card_present']", "automatic_tax: { enabled: true }", "allowed_payment_method_types"), and a concrete routing endpoint ("/v2/core/accounts"). It falls short of anchor 5 only because there are no copy-paste code examples in the body itself (e.g., an actual StripeClient instantiation snippet lives only implicitly in the references); it clearly exceeds anchor 3's pseudocode/incompleteness.

Workflow Clarity

A clear implicit sequence exists: choose environment (sandbox vs test mode) → route via the integration table → "Read the relevant reference file before answering any integration question or writing code" → apply the critical rules, with a genuine validation checkpoint in the tax rule ("confirm the user has an active registration. Without one, Stripe calculates and collects no tax") and ordered CLI steps (create sandbox, then "stripe sandbox claim" before MCP). It is not numbered as an explicit workflow and checkpoints are not systematic, so anchor 5 ('explicit validation steps; feedback loops') is not fully met, but anchor 3's 'checkpoints missing or implicit' understates what is present.

Progressive Disclosure

The body is a concise overview with a routing table that splits content across six real, one-level-deep reference files (payments.md, connect.md, billing.md, tax.md, treasury.md, security.md all exist and contain substantive content, verified), plus external docs links. Navigation is easy: each task row names its API and reference path. The only quirk is the table's angle-bracket pseudo-links ("<references/payments.md>") rather than markdown links, which is cosmetic and does not impede navigation, so anchor 5 fits better than anchor 4's 'minor organization gaps'.

Specificity

The description enumerates many concrete capability areas with named Stripe APIs and parameters — "separate sandboxes vs the shared test mode sandbox", "Checkout Sessions vs PaymentIntents", "Accounts v2, controller properties", "automatic_tax, product tax codes", "API key management... webhooks, OAuth" — covering environments, payments, Connect, billing, tax, treasury, migration, and security comprehensively. This matches the anchor 'Lists multiple specific concrete actions; comprehensive coverage'; the only nitpick is slight redundancy ("integration options (Checkout, Payment Element)" overlaps "API selection"), which is not a coverage gap, so the score-4 anchor ('minor gaps in coverage') fits worse.

Completeness

It explicitly answers 'what' ("Guides Stripe integration decisions across development and test environment planning... security best practices") and 'when' ("Use when planning, building, modifying, testing, or reviewing any Stripe integration, including...") with concrete trigger phrases. This is a direct match for the score-5 anchor; the score-4 anchor ('when could be more explicit') does not apply since the when-clause enumerates nine specific scenarios.

Trigger Term Quality

The 'Use when...' clause includes natural user phrasings with synonyms: "accepting payments", "building marketplaces", "setting up subscriptions", "collecting sales tax, VAT, or GST", "creating connected accounts", "implementing secure key handling", "choosing a development environment". Coverage of natural terms including synonyms is comprehensive, matching the score-5 anchor; no common variation a Stripe user would say is missing.

Distinctiveness Conflict Risk

It occupies a clear niche (Stripe integration decisions) with Stripe-specific trigger vocabulary ("connected accounts", "Stripe Tax", "sandboxes", "Checkout Sessions"), so it is unlikely to fire for a non-Stripe skill. Third-person voice is used consistently ("Guides..."), so no specificity penalty applies.