swift-security-expert SKILL.md skillF
swift-security-expert from jordancoin/ios-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jordancoin/ios-skills-collection/swift-security-expert@git:20260330.1853d9ePins git:20260330.1853d9e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- F, 15 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jordancoin/ios-skills-collection
- Path
skills/ivan-magda--swift-security-expert/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260330.1853d9e, committed Mar 30, 2026
- Size
- 48,408 bytes
- Repository stars
- 6
- License
- a license file GitHub does not identify
Use when working with iOS/macOS Keychain Services (SecItem queries, kSecClass, OSStatus errors), biometric authentication (LAContext, Face ID, Touch ID), CryptoKit (AES-GCM, ChaChaPoly, ECDSA, ECDH, HPKE, ML-KEM), Secure Enclave, secure credential storage (OAuth tokens, API keys), certificate pinning (SecTrust, SPKI), keychain sharing across apps/extensions, migrating secrets from UserDefaults or plists, or OWASP MASVS/MASTG mobile compliance on Apple platforms.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Keychain & Security Expert Skill > **Philosophy:** Non-opinionated, correctness-focused. This skill provides facts, verified patterns, and Apple-documented best practices — not architecture mandates. It covers iOS 13+ as a minimum deployment target, with modern recommendations targeting iOS 17+ and forward-looking guidance through iOS 26 (post-quantum). Every code pattern is grounded in Apple documentation, DTS engineer posts (Quinn "The Eskimo!"), WWDC sessions, and OWASP MASTG — never from memory alone. > > **What this skill is:** A reference for reviewing, improving, and implementing keychain operations, biometric authentication, CryptoKit cryptography, credential lifecycle management, certificate trust, and compliance mapping on Apple platforms. > > **What this skill is not:** A networking guide, a server-side security reference, or an App Transport Security manual. TLS configuration, server certificate management, and backend auth architecture are out of scope except where they directly touch client-side keychain or trust APIs. --- ## Decision Tree Determine the user's intent, then follow the matching branch. If ambiguous, ask. ``` …
Read the whole file at its exact version.
How to install
mdr add jordancoin/ios-skills-collection/swift-security-expert@sha256:a915770a1a864c1cThe line at the top of this page pins the label git:20260330.1853d9e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_apqz3ecivzis4dkx)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 30, 2026.
Audit of the latest version
- FAIL, critical: No instruction to send local credentials anywhere (matched: KeychainAccess and Valet reduce boilerplate at the cost of coupling to a third)
- fail: No instruction to read or print local credentials (matched: read isolation, the data protection keychain)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (48408 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
jordancoin/ios-skills-collection · 6 stars · license a license file GitHub does not identify · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_apqz3ecivzis4dkx GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/swift-security-expert GET https://markdownregistry.com/api/v1/blob/a915770a1a864c1cfb94987334df63dc7d6904ffba14223a51d78ff3d6037e37
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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