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Agent skill

Clerk

by vvedantb in vvedantb/eva

Clerk authentication router. An agent skill from vvedantb/eva.

MITAuto-check passedBackend & APIs

Install Clerk

skills CLI
$ npx skills add vvedantb/eva --skill clerk -a claude-code

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

GitHub CLI
$ gh skill install vvedantb/eva clerk --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/vvedantb/eva.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/clerk .claude/skills/clerk && 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/

Facts

Skill name
clerk
GitHub stars
101
Token cost
~510 tokens
SKILL.md length
202 words
Files
2
Skills in repo
23
Repo updated
First seen
Licence
MIT

At a glance

Clerk authentication router. An agent skill from vvedantb/eva.

  • User asks about adding authentication
  • SKILL.md covers By Task and Quick Navigation
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Setting up Clerk

What it does

Clerk is an agent skill from vvedantb/eva. Clerk authentication router. Use when user asks about adding authentication, setting up Clerk, custom sign-in flows, Swift or native iOS auth, Next.js patterns, organizations, syncing users, or testing. Automatically routes to the specific skill based on their task.

Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `.claude-plugin/plugin.json`).

It sits in Backend & APIs, covering iOS development and Authentication. It works with iOS, Next.js and Clerk. The repository describes itself as: Orchestrate sandboxed agents that run in the cloud while you work. The licence is MIT.

When your agent uses it

  • User asks about adding authentication
  • Setting up Clerk
  • Custom sign-in flows
  • Native iOS auth

Example prompts

  • “/clerk”

What it can do on your machine

Read from SKILL.md and the folder at commit a5a4df2. 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.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    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

Clerk loads about 510 tokens when it runs. Until then it costs about 68 tokens; SKILL.md has 202 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~68
When it runs · the whole SKILL.md, loaded when a task matches
~510

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 passed

The automated check found no risky patterns in SKILL.md.

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

The full file from vvedantb/eva at commit a5a4df2, republished under its MIT licence (© vvedantb). 202 words, ~510 tokens.

Download SKILL.mdSave it as .claude/skills/clerk/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
clerk
description
Clerk authentication router. Use when user asks about adding authentication, setting up Clerk, custom sign-in flows, Swift or native iOS auth, Next.js patterns, organizations, syncing users, or testing. Automatically routes to the specific skill based on their task.

Clerk Skills Router

Based on what you're trying to do, here's the right skill to use:

By Task

Adding Clerk to your project → Use clerk-setup

  • Framework detection and quickstart
  • Environment setup, API keys, Keyless flow
  • Migration from other auth providers

Custom sign-in/sign-up UI → Use clerk-custom-ui

  • Custom authentication flows
  • Appearance and styling
  • OAuth, magic links, passkeys, MFA

Advanced Next.js patterns → Use clerk-nextjs-patterns

  • Server vs Client auth APIs
  • Middleware strategies
  • Server Actions, caching
  • API route protection

B2B / Organizations → Use clerk-orgs

  • Multi-tenant apps
  • Organization slugs in URLs
  • Roles, permissions, RBAC
  • Member management

Webhooks → Use clerk-webhooks

  • Real-time events
  • Data syncing
  • Notifications & integrations

E2E Testing → Use clerk-testing

  • Playwright/Cypress setup
  • Auth flow testing
  • Test utilities

Swift / native iOS auth → Use clerk-swift

  • Native iOS Swift and SwiftUI projects
  • ClerkKit and ClerkKitUI implementation guidance
  • Source-driven patterns from clerk-ios
  • Do not use for Expo or React Native projects

Backend REST API → Use clerk-backend-api

  • Browse API tags and endpoints
  • Inspect endpoint schemas
  • Execute API requests with scope enforcement

Quick Navigation

If you know your task, you can directly access:

  • /clerk-setup - Framework setup
  • /clerk-custom-ui - Custom flows
  • /clerk-nextjs-patterns - Next.js patterns
  • /clerk-orgs - Organizations
  • /clerk-webhooks - Webhooks
  • /clerk-testing - Testing
  • /clerk-swift - Swift/native iOS
  • /clerk-backend-api - Backend REST API

Or describe what you need and I'll recommend the right one.

© vvedantb, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in .claude/skills/clerk of vvedantb/eva.

  • SKILL.md
  • .claude-plugin/plugin.json

Open the folder on GitHubat commit a5a4df2

Compare with similar skills

Clerk 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.

Clerk compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Clerk this skillvvedantb/eva101—~510Automated safety check: PassMIT
Clerkgeekskai/blog1033 repos~1.5kAutomated safety check: PassMIT
Authenticationdpearson2699/swift-ios-skills1.2k—~3.7kAutomated safety check: PassCustom licence
Clerk Nextjs Patternsgeekskai/blog1032 repos~2.1kAutomated safety check: PassMIT
Clerk AuthLeoYeAI/openclaw-master-skills2.2k—~6.1kAutomated safety check: NotesMIT
Clerk Install Authjeremylongshore/tons-of-skills-marketplace2.8k—~1.8kAutomated safety check: NotesMIT

Similar skills

  • Clerk

    geekskai/blog

    Clerk authentication router. An agent skill from geekskai/blog.

    103 GitHub starsUsed in 3 repos~1.5k tokens
    Backend & APIsAuto-check passed

  • Authentication

    dpearson2699/swift-ios-skills

    Implement iOS authentication flows with AuthenticationServices and LocalAuthentication.

    1.2k GitHub stars~3.7k tokensUpdated 2 mo ago
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  • Clerk Nextjs Patterns

    geekskai/blog

    Advanced Next.js patterns - middleware, Server Actions, caching with Clerk.

    103 GitHub starsUsed in 2 repos~2.1k tokens
    Backend & APIsAuto-check passed

  • Clerk Auth

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    Clerk auth with API Keys beta (Dec 2025), Next.js 16 proxy.ts (March 2025 CVE context), API version 2025-11-10 breaking changes, clerkMiddleware() options, webhooks, production considerations (GCP…

    2.2k GitHub stars~6.1k tokensUpdated 2 mo ago
    Backend & APIsAuto-check: notes

  • Clerk Install Auth

    jeremylongshore/tons-of-skills-marketplace

    Install and configure Clerk SDK/CLI authentication. An agent skill from jeremylongshore/tons-of-skills-marketplace.

    2.8k GitHub stars~1.8k tokensUpdated today
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  • Web3auth

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    Integrates MetaMask Embedded Wallets (Web3Auth) for non-custodial wallets via social login or custom JWT (Firebase, Auth0, Cognito).

    144 GitHub stars~1.4k tokensUpdated 5 days ago
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Works with

Categories

Questions about Clerk

What does Clerk do?

Clerk authentication router. An agent skill from vvedantb/eva. Clerk is an agent skill from vvedantb/eva. Clerk authentication router.

When should I use Clerk?

Clerk fits situations like: user asks about adding authentication; setting up Clerk; custom sign-in flows; native iOS auth.

How do I install Clerk in Claude Code?

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

How do I install Clerk in Codex?

Run `npx skills add vvedantb/eva --skill clerk -a codex`. Or copy the skill folder (.claude/skills/clerk in vvedantb/eva) into .agents/skills/clerk in your project. Codex loads it when a task matches its description.

Can I use Clerk 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 vvedantb/eva --skill clerk -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/clerk, .gemini/skills/clerk, .github/skills/clerk and .opencode/skills/clerk in your project.

What does Clerk need to run?

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

Does Clerk access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Clerk safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Clerk use?

Clerk is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Clerk use?

About 510 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Clerk?

Skills that share tags, products or a category with Clerk: Clerk (geekskai/blog, 103 stars), Authentication (dpearson2699/swift-ios-skills, 1.2k stars), Clerk Nextjs Patterns (geekskai/blog, 103 stars) and Clerk Auth (LeoYeAI/openclaw-master-skills, 2.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Clerk?

vvedantb (a GitHub user) maintains it in vvedantb/eva, which has 101 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 9, 2026.

Source: vvedantb/eva on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.