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 entry point: lean DON'T/DO code examples for the highest-risk crypto mistakes, a sequenced workflow with verification checkpoints, and correct offloading of implementation recipes to two real, clearly-signaled reference files. The main gaps are minor: two comment-only code placeholders, a duplicated primitive enumeration in the intro, and no explicit error-recovery loop after workflow verification.
Suggestions
In Mistakes #3 and #5, replace the comment-only DO blocks with minimal executable snippets (e.g. `let plain = try AES.GCM.open(box, using: key)` and a short Keychain add query) so every example is copy-paste ready.
Trim the opening paragraph's re-enumeration of primitives (it duplicates the frontmatter description) and consolidate the iOS 13/17/26 and Swift 6.3 version notes into one availability note.
Extend Workflow step 5 with an explicit feedback loop — e.g. 'if any verification fails, fix and re-run before shipping' — to pair the existing validation checkpoints with error recovery.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is dense and assumes competence (terse DON'T/DO pairs, a compact checklist, no concept tutorials), but the opening paragraph re-enumerates the primitive list already stated verbatim in the description, and version-bound details (iOS 13/17/26, Swift 6.3) sit in the intro and checklist rather than a consolidated availability/deprecated section. Not 5 because of that duplicated enumeration; not 3 because nothing reads as padded explanation of things Claude already knows. | 4 / 5 |
Actionability | Most guidance is concrete, executable Swift (hkdfDerivedSymmetricKey call, AES.GCM.seal with/without explicit nonce, SecureEnclave.isAvailable guard), and implementation depth is correctly delegated to real reference files. Not 5 because two mistake entries (#3 tag verification, #5 Keychain storage) use comment-only placeholders instead of a minimal executable snippet (e.g. `try AES.GCM.open(...)`), leaving minor gaps. | 4 / 5 |
Workflow Clarity | The 5-step workflow is clearly sequenced with validation checkpoints — step 2 (verify platform/peer interoperability) and step 5 ('Verify round trips, tampering, wrong keys, malformed inputs, rotation, Secure Enclave availability, and cross-platform vectors') — plus a separate Review Checklist. Not 5 because there is no explicit error-recovery feedback loop (what to do when step-5 verification fails); not 3 because checkpoints are explicit and concrete, not merely implied. | 4 / 5 |
Progressive Disclosure | The entry point is an overview (workflow, decisions, mistakes, checklist) with both bundle files — references/core-implementation.md and references/cryptokit-patterns.md, both verified to exist — referenced one level deep with explicit purpose statements ('Read [core implementation details]... for hashes, HMAC, AEAD...'). A Contents TOC and a References section make navigation easy; not 4 because structure, signaling, and content split are all clean with no organization gaps. | 5 / 5 |
Total | 17 / 20 Passed |