Conciseness

The body is efficient — a routing table, imperative critical rules, and exact commands with no explanation of concepts Claude already knows — but time-sensitive version pins ("Latest Stripe API version: 2026-08-26.dahlia", the SDK version table, "On API version 2026-03-25.dahlia or later") are not placed in a deprecated/old-patterns section, which the guidelines penalize. Fits the 4 anchor (efficient, minor trimmable elements) better than 3 (no noticeable padding or unnecessary explanation).

Actionability

Highly concrete guidance throughout: exact commands ("stripe sandbox create", "stripe whoami --format json"), exact parameters ("automatic_tax: { enabled: true }", "payment_method_types: ['card_present']", "integration_identifier"), and a decision routing table. It falls short of the 5 anchor only because no complete copy-paste code example appears in the body itself — implementation detail is delegated to reference files, and the "pass the parameter integration_identifier… suffix of 8 random letters" rule lacks an example value.

Workflow Clarity

The decision workflow is clear and sequenced: route via the "Integration routing" table, "Read the relevant reference file before answering any integration question or writing code", then apply the "Critical rules" — with one explicit confirmation gate ("confirm the user has an active registration" before enabling automatic_tax). It is not 5 because there are no explicit verification/error-recovery checkpoints, and not 3 because the sequence and key checkpoints are present and coherent.

Progressive Disclosure

The body is a genuine overview with well-signaled, one-level-deep references, and every referenced bundle file (references/payments.md, connect.md, billing.md, tax.md, treasury.md, security.md) exists on disk. Minor gap: reference links point to external URLs (https://docs.stripe.com/references/payments.md) rather than relative paths to the bundled files, slightly muddying navigation; this matches the 4 anchor's "references mostly clear; minor organization gaps" rather than the 5 anchor's easy navigation.

Specificity

Lists multiple specific concrete capabilities across every major Stripe domain with named APIs and parameters — "API selection (Checkout Sessions vs PaymentIntents)", "Connect platform setup (Accounts v2, controller properties)", "tax and registrations (Stripe Tax, automatic_tax, product tax codes)", "security best practices (API key management, API key permissions, webhooks, OAuth)" — which matches the comprehensive-coverage anchor rather than the minor-gaps anchor at 4.

Completeness

Explicitly answers both: what ("Guides Stripe integration decisions across development and test environment planning… migrating from deprecated Stripe APIs, and security best practices") and when ("Use when planning, building, modifying, testing, or reviewing any Stripe integration"), with concrete trigger phrases exactly as the top anchor describes.

Trigger Term Quality

The "Use when" clause enumerates natural user phrasings with synonyms — "planning, building, modifying, testing, or reviewing any Stripe integration", "accepting payments", "building marketplaces", "setting up subscriptions", "collecting sales tax, VAT, or GST", "creating connected accounts", "implementing secure key handling" — comprehensive natural-term coverage, not the "a few natural terms missing" level of 4.

Distinctiveness Conflict Risk

The entire scope is Stripe-specific (sandboxes, Checkout Sessions, PaymentIntents, Connect, Stripe Tax, Treasury, RAK-style key management) with distinct trigger vocabulary, giving it a clear niche with minimal conflict risk; not the 4 anchor, which implies overlap with closely related skills.