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Clerk authentication on the backend v1.0.0

Use this resource to protect a backend API with Clerk

New

  • 462 downloads
  • 138 likes
  • 216 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install clerk-backend-auth

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent integrates Clerk into an Express, Fastify or other server: Bearer token verification, middleware, clerkClient calls and proxy header handling. You get per-language patterns and diagnostic steps for 401 and 404 errors.

Mostly picked by

Updated November 2, 2026

Card for the “Clerk authentication on the backend” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: Express and Fastify patterns
  • SKILL.md: token verification and cross-origin requests
  • SKILL.md: patterns for Go, Python and other languages

Good fit for

  • Your API returns 401 from a separate frontend
  • Your Node server must validate Clerk tokens

Not for

    Tags

    • clerk
    • api
    • token
    • backend

    About

    You say

    “Protect my Express route /api/projects with Clerk and return 401 without a valid token.”

    Card for the “Clerk authentication on the backend” skill

    Skill published by josiahsiegel under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to protect a backend API with Clerk
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md12.4 KB

    Origin and licence

    Listed unmodified

    Author
    josiahsiegel
    Source
    github.com/josiahsiegel/claude-plugin-marketplace/tree/5a1b1123b9e50aa9a66a61005ca6fe012cc7442d/plugins/clerk-auth-master/skills/clerk-backend-apis
    Licence
    MIT

    Notice

    « clerk-backend-apis » (josiahsiegel, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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