skills/ios/ios-security/SKILL.md
Secure iOS apps with secure storage, biometrics, and data protection. Use when implementing secure storage, Face ID/Touch ID, or data protection in iOS.
npx skillsauth add hoangnguyen0403/agent-skills-standard ios-securityInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SecItemAdd, SecItemUpdate, and SecItemDelete with kSecClassGenericPassword for tokens/PII. Never use UserDefaults.LocalAuthentication with LAContext. Verify availability with canEvaluatePolicy before prompting.Data.WritingOptions.completeFileProtection when saving to disk.ServerTrustManager or TrustKit for production apps to prevent MITM attacks.See Secure storage and biometrics implementation examples
UserDefaults: Always use secure storage for tokens and PIILAError: Check for userCancel and authenticationFailed in biometric flowstesting
Infer the requesting operator's technical fluency from message content (never ask directly) and adapt register — business, hybrid, or technical — across SDLC workflow output. Use when starting sdlc, brainstorm-feature, plan-feature, verify-work, publish-notes, or session-report, or whenever a request's phrasing signals a non-technical or cross-stack operator.
documentation
Define transaction boundaries, locking, and consistency guarantees for multi-step writes. Use when designing atomic operations, retries, idempotency, or concurrent write behavior.
development
Design relational or document schemas from access patterns, cardinality, and lifecycle. Use when modeling entities, choosing embed vs normalize, or shaping schema boundaries before implementation.
data-ai
Diagnose database latency with explain plans, index ownership, and query-shape review. Use when a query is slow, an index is missing, or scans and N+1 patterns appear.