Agent skill

Cryptotokenkit

by dpearson2699 in dpearson2699/swift-ios-skills

Access security tokens and smart cards using CryptoTokenKit.

Custom licenceAuto-check: notesBackend & APIs

Install Cryptotokenkit

skills CLI

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

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install dpearson2699/swift-ios-skills cryptotokenkit --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cryptotokenkit .claude/skills/cryptotokenkit && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "cryptotokenkit" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit into .claude/skills/cryptotokenkit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptotokenkit", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

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

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install dpearson2699/swift-ios-skills cryptotokenkit --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cryptotokenkit .agents/skills/cryptotokenkit && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "cryptotokenkit" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit into .agents/skills/cryptotokenkit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptotokenkit", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

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

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install dpearson2699/swift-ios-skills cryptotokenkit --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cryptotokenkit .cursor/skills/cryptotokenkit && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "cryptotokenkit" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit into .cursor/skills/cryptotokenkit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptotokenkit", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

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

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

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

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install dpearson2699/swift-ios-skills cryptotokenkit --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cryptotokenkit .gemini/skills/cryptotokenkit && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "cryptotokenkit" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit into .gemini/skills/cryptotokenkit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptotokenkit", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install dpearson2699/swift-ios-skills cryptotokenkit

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cryptotokenkit .github/skills/cryptotokenkit && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "cryptotokenkit" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit into .github/skills/cryptotokenkit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptotokenkit", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

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

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install dpearson2699/swift-ios-skills cryptotokenkit --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cryptotokenkit .opencode/skills/cryptotokenkit && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "cryptotokenkit" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/cryptotokenkit into .opencode/skills/cryptotokenkit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptotokenkit", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: cryptotokenkit
GitHub stars: 1.2k
Token cost: ~4.5k tokens
SKILL.md length: 1,029 words
Files: 3 (incl. references)
Skills in repo: 86
Repo updated: Jul 31, 2026
First seen: Oct 7, 2026
Licence: Custom licence

At a glance

Access security tokens and smart cards using CryptoTokenKit.

Works in 3 steps: TokenDriver (subclass of… → Token (subclass of TKSmartCardToken) --… → TokenSession (subclass of…
Building TKTokenDriver
SKILL.md covers Contents, Architecture Overview, Token Extensions and Token Sessions, plus 8 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Cryptotokenkit is an agent skill from dpearson2699/swift-ios-skills. Access security tokens and smart cards using CryptoTokenKit. Use when building TKTokenDriver or TKSmartCardTokenDriver extensions, communicating with smart cards via TKSmartCard/TKSmartCardSlotManager, using iOS 26+ NFC smart-card sessions, registering smart cards, querying token-backed keychain items with kSecAttrTokenID, monitoring TKTokenWatcher, or configuring certificate-based smart-card authentication.

Its SKILL.md is about 4.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `evals/evals.json` and `references/cryptotokenkit-patterns.md`).

It sits in Backend & APIs, covering Authentication. It works with iOS. The repository describes itself as: Agent Skills for iOS 26+, Swift 6.3, SwiftUI, and modern Apple frameworks.

When your agent uses it

Building TKTokenDriver
TKSmartCardTokenDriver extensions
Communicating with smart cards via TKSmartCard/TKSmartCardSlotManager
Using iOS 26+ NFC smart-card sessions

Example prompts

“/cryptotokenkit”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

TokenDriver (subclass of TKSmartCardTokenDriver) -- entry point
Token (subclass of TKSmartCardToken) -- represents the token
TokenSession (subclass of TKSmartCardTokenSession) -- handles operations

What it can do on your machine

Read from SKILL.md and the folder at commit 8d90fd1. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are swift and bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- sosumi.ai
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cryptotokenkit loads about 4.5k tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 107 tokens; SKILL.md has 1,029 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~107
When it runs · the whole SKILL.md, loaded when a task matches: ~4.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~10k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

NoteRuns commands with sudoSKILL.md:150

sudo -u _securityagent /Applications/TokenHost.app/Contents/MacOS/TokenHost

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,029 words (~4,480 tokens).

“Use CryptoTokenKit for token driver extensions, smart-card communication, token sessions, token-backed keychain integration, and certificate-based authentication in Swift 6.3 apps.”

— opening of SKILL.md by dpearson2699, Custom licence

name: cryptotokenkit

Outline of SKILL.md

CryptoTokenKit
Contents
Architecture Overview
Key Types
Token Extensions
Driver Class
Token Class
Info.plist and Registration
Token Sessions
PIN Authentication
Smart Card Communication
Discovering Card Readers
Sending APDU Commands
NFC Smart Card Sessions (iOS/iPadOS 26+)
Keychain Integration
Certificate Authentication
Token Key Requirements
Smart Card Authentication Preferences (macOS)
Token Watching
Error Handling
Common Mistakes
DON'T: Query token keychain items without checking token presence
DON'T: Treat API availability as an access guarantee
DON'T: Skip session management for card communication
DON'T: Ignore status words in APDU responses
DON'T: Hard-code blanket algorithm support
Review Checklist
References

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (references) in skills/cryptotokenkit of dpearson2699/swift-ios-skills.

SKILL.md
evals/evals.json
references/cryptotokenkit-patterns.md

Open the folder on GitHubat commit 8d90fd1

Compare with similar skills

Cryptotokenkit next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Cryptotokenkit compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Cryptotokenkit this skilldpearson2699/swift-ios-skills	1.2k	—	~4.5k	Automated safety check: Notes	Custom licence	2 mo ago
Web3authWeb3Auth/web3auth-examples	144	—	~1.4k	Automated safety check: Pass	MIT	4 days ago
Maui Authenticationdavidortinau/maui-skills	174	—	~1.5k	Automated safety check: Pass	MIT	3 mo ago
Clerkvvedantb/eva	101	—	~510	Automated safety check: Pass	MIT	today
macOS Intune Baselinevinayaklatthe/microsoft-security-skills	175	—	~2.4k	Automated safety check: Pass	MIT	3 mo ago
Telnyx Webrtc Client iOSteam-telnyx/ai	220	—	~7.9k	Automated safety check: Pass	MIT	2 days ago

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Works with

Questions about Cryptotokenkit

What does Cryptotokenkit do?

Access security tokens and smart cards using CryptoTokenKit. Cryptotokenkit is an agent skill from dpearson2699/swift-ios-skills. Access security tokens and smart cards using CryptoTokenKit.

When should I use Cryptotokenkit?

Cryptotokenkit fits situations like: building TKTokenDriver; TKSmartCardTokenDriver extensions; communicating with smart cards via TKSmartCard/TKSmartCardSlotManager; using iOS 26+ NFC smart-card sessions.

How do I install Cryptotokenkit in Claude Code?

Run `npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a claude-code`. Or copy the skill folder (skills/cryptotokenkit in dpearson2699/swift-ios-skills) into .claude/skills/cryptotokenkit in your project. Claude Code loads it when a task matches its description.

How do I install Cryptotokenkit in Codex?

Run `npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a codex`. Or copy the skill folder (skills/cryptotokenkit in dpearson2699/swift-ios-skills) into .agents/skills/cryptotokenkit in your project. Codex loads it when a task matches its description.

Can I use Cryptotokenkit in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add dpearson2699/swift-ios-skills --skill cryptotokenkit -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cryptotokenkit, .gemini/skills/cryptotokenkit, .github/skills/cryptotokenkit and .opencode/skills/cryptotokenkit in your project.

What does Cryptotokenkit need to run?

SKILL.md names no scripts, command-line tools or credentials: Cryptotokenkit is instructions for the agent only.

Does Cryptotokenkit access the network?

SKILL.md names 1 domain. As links in the text: sosumi.ai. This is read from the text; nothing was executed.

Is Cryptotokenkit safe to install?

Our automated static check of SKILL.md found notes only (runs commands with sudo), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Cryptotokenkit use?

Cryptotokenkit has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Cryptotokenkit use?

About 4.5k tokens (SKILL.md is roughly 18k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.5k tokens, read only when the agent opens those files.

What are the alternatives to Cryptotokenkit?

Skills that share tags, products or a category with Cryptotokenkit: Web3auth (Web3Auth/web3auth-examples, 144 stars), Maui Authentication (davidortinau/maui-skills, 174 stars), Clerk (vvedantb/eva, 101 stars) and macOS Intune Baseline (vinayaklatthe/microsoft-security-skills, 175 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cryptotokenkit?

dpearson2699 (a GitHub user) maintains it in dpearson2699/swift-ios-skills, which has 1,175 GitHub stars. The repository holds 86 skills in this directory. The repository was last updated on July 31, 2026.

Source: dpearson2699/swift-ios-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Cryptotokenkit

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from dpearson2699/swift-ios-skills

Related

Questions about Cryptotokenkit