Content
75%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 strong, well-organized reference body: executable code for every primitive, explicit DON'T/DO mistake patterns, a review checklist, and correctly delegated extended patterns in a single clearly signaled reference file. The main weaknesses are minor — a few non-self-contained snippets, scattered version-availability qualifiers, and a main file that is longer than a pure overview.
Suggestions
Make the HPKE snippet self-contained (define 'plaintext' and show the recipient's open() call) and replace the comment-only block in Common Mistake #3 with a concrete DON'T/DO code pair so every example is copy-paste runnable.
Consolidate the iOS/macOS availability matrix (core primitives 13+, HPKE 17+, SHA-3/ML-KEM/ML-DSA 26+) into one short table near the top instead of repeating version qualifiers throughout each section.
Consider moving the Post-Quantum CryptoKit section's API inventory into references/cryptokit-patterns.md alongside its existing post-quantum material, keeping only a brief availability-gated summary plus pointer in SKILL.md.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is code-first and assumes competence — e.g., 'Compare CryptoKit digest values directly. Do not convert digests to strings' with no padding about what hashing is. Minor trims remain: iOS version qualifiers (13+/17+/26+) are scattered across sections rather than consolidated, and statements like 'P384 and P521 use the same API — substitute the curve name' partially duplicate the curve-selection table. This fits 'efficient; minor instances of over-explanation that could be trimmed' rather than the fully lean top anchor. | 4 / 5 |
Actionability | Nearly all guidance is executable Swift — one-shot/incremental hashing, HMAC compute and constant-time verify via 'isValidAuthenticationCode', AES.GCM seal/open, ECDH with hkdfDerivedSymmetricKey, Secure Enclave key creation with 'guard SecureEnclave.isAvailable'. Minor gaps keep it below the copy-paste-ready top anchor: the HPKE snippet uses an undefined 'plaintext' variable, and Common Mistake #3 is a comment-only code block with no executable DON'T/DO example. | 4 / 5 |
Workflow Clarity | Each task area is unambiguous, and the Review Checklist plus inline availability guards ('if #available(iOS 26.0, *)', 'guard SecureEnclave.isAvailable else') act as validation checkpoints for crypto code review. However, the content is a task-menu reference rather than a sequenced workflow — there are no explicit do→verify→fix feedback loops, so it matches 'most checkpoints present; minor validation gaps' rather than the anchor-5 pattern of explicit validation steps with error-recovery loops. | 4 / 5 |
Progressive Disclosure | Structure is good: a Contents TOC, core primitive usage inline, and extended patterns (key serialization, Keychain storage, AES key wrapping, SealedBox anatomy, export compliance, performance) delegated to the real, verified one-level-deep references/cryptokit-patterns.md, signaled both inline ('See [references/cryptokit-patterns.md] for serialization examples') and in a References section. It falls short of the top anchor because SKILL.md itself runs ~490 lines — more than a concise overview — and sections like Post-Quantum CryptoKit arguably belong alongside the extended patterns in the reference file. | 4 / 5 |
Total | 16 / 20 Passed |