Content
78%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A well-structured, code-first reference: executable examples for all five flows, a useful Common Mistakes section, a review checklist, and correctly separated one-level-deep bundle references. It falls short of top marks on actionability (undefined passkeyRequest, implied delegate conformance), workflow clarity (no explicit validation feedback loops), and conciseness (TOC and an unpinned version-target line).
Suggestions
Actionability: define or source `passkeyRequest` in the Password AutoFill snippet (it is used but never created there), and show the minimal ASAuthorizationControllerDelegate handling for passkey results so the examples are copy-paste ready.
Workflow clarity: add an explicit validation feedback loop for identity tokens, e.g., verify signature/expiry on the server → if invalid, re-check getCredentialState and re-authenticate, mirroring the loop style the Review Checklist only names.
Conciseness: move "Targets Swift 6.4 / iOS 26+" into a short compatibility note (or remove it) so version-sensitive details don't age the skill, and drop the Contents TOC — the section headers already provide navigation at this length.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Sections are lean and code-first with no re-teaching of known concepts (e.g., "Authenticate without passwords using hardware-backed credentials synced via iCloud Keychain" is one line, then code). Minor trimmable items remain: the 8-line Contents TOC and the time-sensitive "Targets Swift 6.4 / iOS 26+" version line, which is not placed in a compatibility/deprecated section. Not 5 per the version-info guideline; not 3 because no section pads or explains what Claude already knows. | 4 / 5 |
Actionability | Every flow has concrete, mostly executable Swift ("SignInWithAppleButton(.signIn) { request in … }", "ASAuthorizationPlatformPublicKeyCredentialProvider(relyingPartyIdentifier: \"example.com\")", "ASWebAuthenticationSession(url:callbackURLScheme:) …"), with specific config steps ("webcredentials:example.com"). Minor gaps: the Password AutoFill snippet references an undefined "passkeyRequest", and ASAuthorizationControllerDelegate/presentation-provider conformance is implied rather than shown. Not 5 (not fully copy-paste ready for the passkey/AutoFill flows); not 3 (real executable code, not pseudocode). | 4 / 5 |
Workflow Clarity | Each flow is sequenced setup → request → result handling, and checkpoints exist: "Check credential state on app launch using ASAuthorizationAppleIDProvider().getCredentialState(forUserID:)", the canEvaluatePolicy pre-check, and a closing "Review Checklist" covering all flows. Not 5: no explicit validate→fix→retry feedback loops (server-side identity-token verification is named in the checklist/mistakes but never looped with recovery steps); not 3: checkpoints are explicit and present, not merely implicit. | 4 / 5 |
Progressive Disclosure | The body is a concise overview with quick examples per flow, and detail is appropriately split into two real, one-level-deep, descriptively labeled references — "Keychain & biometric patterns: references/keychain-biometric.md" and "Passkey patterns: references/passkeys.md" (both files exist and contain no nested local references) — alongside a clearly organized Apple API-doc link list. Matches the anchor-5 structure of overview plus well-signaled one-level-deep references. | 5 / 5 |
Total | 17 / 20 Passed |