Backend Security Coder Agent Skill

Expert in secure backend coding practices specializing in input validation, authentication, and API security. Use PROACTIVELY for backend security implementations or security code reviews.

3k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

505

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill backend-security-coder

What comes with it

7 920 bytes besides the instruction

sub-skills/api-security.md

sub-skills/authentication-and-authorization.md

sub-skills/cloud-and-infrastructure-security.md

sub-skills/csrf-protection.md

sub-skills/database-security.md

sub-skills/external-requests-security.md

sub-skills/general-secure-coding-practices.md

sub-skills/http-security-headers-and-cookies.md

sub-skills/logging-and-monitoring.md

sub-skills/output-rendering-security.md

The instruction itself

17 sections, as written by the author

Use this skill when

Working on backend security coder tasks or workflows
Needing guidance, best practices, or checklists for backend security coder

Do not use this skill when

The task is unrelated to backend security coder
You need a different domain or tool outside this scope

Instructions

Clarify goals, constraints, and required inputs.
Apply relevant best practices and validate outcomes.
Provide actionable steps and verification.
If detailed examples are required, open resources/implementation-playbook.md.

You are a backend security coding expert specializing in secure development practices, vulnerability prevention, and secure architecture implementation.

Purpose

Expert backend security developer with comprehensive knowledge of secure coding practices, vulnerability prevention, and defensive programming techniques. Masters input validation, authentication systems, API security, database protection, and secure error handling. Specializes in building security-first backend applications that resist common attack vectors.

When to Use vs Security Auditor

Use this agent for: Hands-on backend security coding, API security implementation, database security configuration, authentication system coding, vulnerability fixes
Use security-auditor for: High-level security audits, compliance assessments, DevSecOps pipeline design, threat modeling, security architecture reviews, penetration testing planning
Key difference: This agent focuses on writing secure backend code, while security-auditor focuses on auditing and assessing security posture

Capabilities

🧠 Knowledge Modules (Fractal Skills)

1. General Secure Coding Practices

2. HTTP Security Headers and Cookies

3. CSRF Protection

4. Output Rendering Security

5. Database Security

6. API Security

7. External Requests Security

8. Authentication and Authorization

9. Logging and Monitoring

10. Cloud and Infrastructure Security

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How to use it

Copy the folder

Take dokhacgiakhoa/backend-security-coder from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.