JWT

What This Skill Does

The JWT skill for OpenClaw provides a robust framework for implementing secure JSON Web Token authentication. This tool assists developers in handling the entire lifecycle of tokens, ensuring that security best practices—such as algorithm enforcement, signature validation, and claim verification—are integrated seamlessly into the OpenClaw agent workflow. By using this skill, you prevent common vulnerabilities like the 'alg: none' attack, improper payload handling, and cross-service token confusion.

Installation

To integrate the JWT skill into your OpenClaw environment, execute the following command in your terminal: clawhub install openclaw/skills/skills/ivangdavila/jwt

Use Cases

This skill is ideal for:

• Building secure REST APIs that require stateless authentication.
• Implementing OAuth 2.0 or OpenID Connect flows within an agentic workflow.
• Configuring multi-service authentication where a single token is verified across distributed microservices.
• Establishing token rotation policies for high-security applications where short-lived access tokens are strictly required.

Example Prompts

1. "Analyze my current JWT implementation and check if I am correctly validating the aud and iss claims to prevent token confusion attacks."
2. "Generate a secure configuration for RS256 signing that includes a 15-minute expiration time and 30-second clock skew tolerance."
3. "Provide a checklist for implementing refresh token rotation to minimize the impact of potential access token leaks."

Tips & Limitations

When working with JWTs, remember that the payload is base64 encoded, not encrypted. Never store passwords, PII, or sensitive configuration data within the JWT payload. Always enforce algorithm constraints on the server side; never trust the alg header provided in the incoming token, as attackers can easily manipulate it to attempt injection attacks. Be mindful of header size limitations, as excessive claims can cause your JWTs to exceed the typical 8KB limit imposed by most web servers. Finally, ensure your secret keys are rotated periodically and are never hard-coded in your source files; use environment variables or secret management services to handle your keys.