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Jwt Security

Checked
mindrally·vlatest·security·Apache-2.0

Helps with JWT, security as part of implementing security and authentication workflows.

Repository

Install on your platform

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

  1. 1

    Run this in your project

    terminal
    $ npx skills add mindrally/skills --skill jwt-security -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

mindrally

Taken from the source listing. We haven't verified who controls this account.

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 passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • 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 undeclared network calls: passed

    Makes no network calls.

    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.

  • 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 credential access: passed

    Reads no keys, tokens, keychains or credential files.

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

  • 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 mindrally/skills at 7682ca7771.

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

Commit
7682ca7771
Manifest
jwt-security/SKILL.md
Scanned
1 file, 388 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 provides expert guidance on implementing secure JSON Web Token (JWT) authentication and authorization workflows. It focuses on best practices for JWT creation, signing, and validation, emphasizing that JWT security depends heavily on proper implementation rather than inherent token properties. The skill helps ensure tokens are handled securely by recommending specific algorithms, payload structures, and lifetime guidelines.

When to use it

  • When designing or implementing authentication systems using JSON Web Tokens (JWTs).
  • To review existing JWT implementations for potential security vulnerabilities.
  • For guidance on selecting appropriate signing algorithms (RS256, ES256, EdDSA, HS256) based on your needs and environment.
  • When needing to implement key rotation strategies for JWT signatures.
  • To ensure compliance with JWT security best practices.

Key capabilities

  • Provides guidance on JWT structure (Header, Payload, Signature).
  • Recommends specific header attributes like kid for key rotation and typ: "JWT".
  • Defines required and recommended payload claims (iss, sub, aud, exp, iat, nbf, jti).
  • Suggests appropriate signing algorithms (RS256, ES256, EdDSA, HS256) with considerations for security.
  • Offers guidelines on token lifetime management (access tokens, refresh tokens, ID tokens, etc.).
  • Advises against storing sensitive data within JWT payloads.

Example prompts

  • "What are the best practices for including a key identifier in a JWT header?"
  • "Explain the difference between RS256 and HS256 signing algorithms."
  • "How can I implement token refresh mechanisms to maintain security while extending user sessions?"
  • “What claims should be included in a JWT payload?”

Tips & gotchas

  • Always validate tokens server-side, even for internal services.
  • Prioritize asymmetric signing algorithms (RS256, ES256, EdDSA) whenever possible.
  • Keep token lifetimes short and implement refresh mechanisms to minimize the impact of compromised tokens.