auth-token-inspector
Skill0 starsChanged 27 days agoMITView on GitHub
Audits token storage mechanisms to prevent XSS-based JWT theft.
In this repository219 other files it gives its agents.
- .agents/AGENTS.mdAGENTS.md
- AGENTS.mdAGENTS.md
- .claude/CLAUDE.mdCLAUDE.md
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The file
We split this skill into the rules it gives an agent
1 rule. About 0 are common, 1 is distinctive, and 0 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈1
Distinctive · estimate
This author's own choices. Worth a look.
0
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 22
Short Expiration: Ensure access tokens have short expiration times, and implement secure, rotation-enabled refresh tokens stored in cookies.
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Auth Token Inspector
Core Principles
- Secure Storage: JWTs or session tokens must NOT be stored in
localStorageorsessionStoragedue to vulnerability to Cross-Site Scripting (XSS). - HttpOnly Cookies: Deliver tokens via
HttpOnly,Secure, andSameSite=Strict(orLax) cookies to protect them from client-side JS access. - Short Expiration: Ensure access tokens have short expiration times, and implement secure, rotation-enabled refresh tokens stored in cookies.
Storage Comparison
| Storage Mode | Vulnerable to XSS | Vulnerable to CSRF | Recommended |
| localStorage | Yes (High Risk) | No | NO |
| sessionStorage | Yes (High Risk) | No | NO |
| HttpOnly Cookie | No (Secure) | Yes (Mitigated via SameSite/Tokens) | YES |
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