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Auth0 Fastify

Official
auth0·vlatest·backend·Apache-2.0

Auth0 Fastify accelerates your Node.js applications by providing a streamlined, pre-built integration for Auth0 authentication and authorization.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

Installs under a different name. Its SKILL.md names it auth0, not the name it is listed under, so the command below uses that name.
  1. 1

    Run this in your project

    terminal
    $ npx skills add auth0/agent-skills --skill auth0 -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

auth0

Matched to the vendor's own GitHub organisation.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill failed 2 of 6 checks. A failure is not proof of bad intent; it means something in the code needs a human to look at it before you run it.

  • No undeclared network calls: failed

    Contacts 1 host that is neither well-known infrastructure nor declared in the skill's frontmatter: mcp.cloudflare.com.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

    Hosts contacted

    mcp.cloudflare.comundeclaredschemas.openid.netnamespace identifier

    What it found

    • plugins/auth0/skills/auth0/references/feature-custom-domains/index.md:782contacts mcp.cloudflare.com
      claude mcp add --transport http cloudflare https://mcp.cloudflare.com/mcp

  • No credential access: failed

    Touches credential material in 2 places.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

    What it found

    • plugins/auth0/skills/auth0/references/feature-audit/index.md:189environment file outside the project
      ENV_FILE="$HOME/.auth0-checkmate.env"
    • plugins/auth0/skills/auth0/references/feature-audit/index.md:257environment file outside the project
      source ~/.auth0-checkmate.env 2>/dev/null  # ensure env vars are available

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned auth0/agent-skills at 818a2ffb64.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
818a2ffb64
Manifest
plugins/auth0/skills/auth0/SKILL.md
Scanned
60 files, 12,454 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill integrates Auth0 with Fastify, a web application framework built on Node.js. It allows AI agents to leverage Auth0's authentication and authorization features within Fastify applications for secure user management and access control. The skill streamlines the process of integrating Auth0 into Fastify projects, reducing boilerplate code and simplifying development.

When to use it

  • Building a new API: If you’re creating an API with Fastify and need robust authentication and authorization.
  • Adding secure user login: When you want users to log in via Auth0 within your existing Fastify application.
  • Implementing role-based access control (RBAC): To manage user permissions and restrict access to specific resources based on roles defined in Auth0.
  • Integrating with an existing Auth0 tenant: When migrating a legacy system to use Fastify while retaining existing Auth0 configurations.

Key capabilities

  • Fastify integration
  • Authentication
  • Authorization
  • Role-Based Access Control (RBAC)

Example prompts

  • "Authenticate this user using Auth0."
  • "Check if the current user has permission to access resource X."
  • "Create a new Fastify route that requires authentication via Auth0."

Tips & gotchas

  • Requires an existing Auth0 tenant and application.
  • Familiarity with Fastify framework is recommended for optimal use.