---
title: "Secure Code Guardian - Air Market"
description: "Login, permissions and anything a user types are where applications get broken into, and the safe way is not the obvious way. This helps you write those parts correctly, from password storage to data…"
canonical: "https://airmarket.ai/app/secure-code-guardian"
---

[Air Market](/) / [Security](/category/security) / Secure Code Guardian

Skill by [Jeffallan](/@jeffallan)

# Secure Code Guardian

Handle logins and untrusted input without leaving a hole

## What this does

Login, permissions and anything a user types are where applications get broken into, and the safe way is not the obvious way. This helps you write those parts correctly, from password storage to database queries to headers. Reach for it when you are implementing auth or accepting input you did not generate.

### Top 3 things it does for you

- Build login and permission checks
- Store passwords safely
- Validate and sanitise incoming input

## Information

**Secure Code Guardian at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Jeffallan](/@jeffallan) |
| Category | [Security](/category/security) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Version | 1.1.0 |
| Size | 23 KB |
| Licence | MIT |
| Repository | [Jeffallan/claude-skills](https://github.com/Jeffallan/claude-skills/tree/5e8b6b8ff4007414f91f980771047b6136600c34/skills/secure-code-guardian) |
| GitHub stars | 11,146 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Secure Code Guardian and flagged nothing. AIR's verdict: **safe**.

**What Secure Code Guardian's check was run against**

|  |  |
| --- | --- |
| Commit | 5e8b6b8ff4007414f91f980771047b6136600c34 |
| Content hash | af487516e127adfe3c867e6f83f8b091fd80f3542c5ac4bf128c26d7084e4fe7 |
| Files read | [Browse the files at this exact commit](https://github.com/Jeffallan/claude-skills/blob/5e8b6b8ff4007414f91f980771047b6136600c34/skills/secure-code-guardian/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Secure Code Guardian](/security/secure-code-guardian)

## About Secure Code Guardian

For implementing authentication and authorization, securing user input, and preventing OWASP Top 10 vulnerabilities. That includes custom security work such as hashing passwords with bcrypt or argon2, sanitizing SQL queries with parameterized statements, configuring CORS and CSP headers, validating input with Zod, and setting up JWT tokens.

Use it for authentication, authorization, input validation, encryption, OWASP Top 10 prevention, secure session management and security hardening.

For pre-built OAuth or SSO integrations, or standalone security audits, a more specialized skill may fit better.

## What's inside

- SKILL.md - instructions
- references/authentication.md - reference
- references/input-validation.md - reference
- references/owasp-prevention.md - reference
- references/security-headers.md - reference
- references/xss-csrf.md - reference

## Questions

### Is Secure Code Guardian safe to install?

AIR scanned this exact version of Secure Code Guardian and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 5e8b6b8ff400, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/secure-code-guardian.

### How do I install Secure Code Guardian?

Open https://airmarket.ai/app/secure-code-guardian on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/Jeffallan/claude-skills/tree/5e8b6b8ff4007414f91f980771047b6136600c34/skills/secure-code-guardian. Install from that link, not the branch.

## Related on Air Market

- [More Security listings](/category/security)
- [Everything by Jeffallan](/@jeffallan)

---

Canonical URL: <https://airmarket.ai/app/secure-code-guardian>