skill CX Codex

cryptotokenkit — Claude Code skill: what it does, how to install

Q: How to install cryptotokenkit in Claude Code?

Run `npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a claude-code` in your terminal.

Q: Why does TKSmartCardSlotManager.default return nil?

The manager is optional on Apple platforms and yields `nil` if smart card access or the required entitlement is not active.

Guides smart card and driver extension integration using CryptoTokenKit in Swift 6.3 projects.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓

npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a claude-code

Open on GitHub

What cryptotokenkit does

The skill provides architecture guidance and code patterns for Apple's CryptoTokenKit framework. It covers building TKSmartCardTokenDriver extensions for macOS system login, sending APDU commands with TKSmartCard, and starting NFC smart card sessions on iOS 26+.

Driver extensions structure work across three parts: the driver entry point, the token object, and the session handling cryptographic operations. To register the extension on macOS, the host app requires a one-time launch under _securityagent.

Be aware that TKSmartCardSlotManager.default is optional and evaluates to nil unless smart card access is enabled. General Secure Enclave primitives and WebAuthn passkeys belong outside this skill.

What it helps with

build macOS token driver extensions for system authentication
communicate with contactless smart cards over NFC in iOS
query token-backed keychain items using kSecAttrTokenID
observe token insertion and removal with TKTokenWatcher

Example prompts for the agent

Implement a TKSmartCardTokenDriver subclass and configure Info.plist for macOS.
How do I start an NFC contactless smart card session with TKSmartCardSlotNFCSession?
Write a Swift snippet to monitor token events using TKTokenWatcher.

How to install cryptotokenkit

1Skills CLI (Vercel)

npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a claude-code

2Manually: put the files in place

~/.claude/skills/cryptotokenkit/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/cryptotokenkit/

1Skills CLI (Vercel)

npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a codex

2Manually: put the files in place

.agents/skills/cryptotokenkit/SKILL.md

For all projects use ~/.agents/skills/

1Skills CLI (Vercel)

npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a cursor

2Manually: put the files in place

.cursor/skills/cryptotokenkit/SKILL.md

Cursor also reads .agents/skills/ and .claude/skills/

1GitHub CLI

gh skill install dpearson2699/swift-ios-skills cryptotokenkit

2Manually: put the files in place

.github/skills/cryptotokenkit/SKILL.md

1Skills CLI (Vercel)

npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a gemini-cli

2Platform CLI

gemini skills install https://github.com/dpearson2699/swift-ios-skills --path skills/cryptotokenkit

Manually: put the files in place

.devin/skills/cryptotokenkit/SKILL.md

The legacy .windsurf/skills/ path still works

Skills CLI (Vercel)

npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a opencode

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about cryptotokenkit

How to install cryptotokenkit in Claude Code?

Run npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a claude-code in your terminal.

What does cryptotokenkit do?

It instructs your assistant on implementing smart card extensions, APDU sessions, and token-backed keychain items in Swift.

Why does TKSmartCardSlotManager.default return nil?

The manager is optional on Apple platforms and yields nil if smart card access or the required entitlement is not active.

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