Fullstack Guardian

by Jeffallan

Fullstack Guardian is a Frontend skill for Claude Code, published by Jeffallan in claude-skills.

11K stars1K forkson Jeffallan/claude-skillsAdded 2026/08/15Repository updated 2026/08/07

View source on GitHub Download repo ZIP

ai-agentsclaudeclaude-codeclaude-marketplaceclaude-skills

Install in seconds

Install Fullstack Guardian

Copy Fullstack Guardian into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/Jeffallan/claude-skills/tree/main/skills/fullstack-guardian ~/.claude/skills/fullstack-guardian

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/Jeffallan/claude-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/fullstack-guardian/SKILL.md in Jeffallan/claude-skills
Installs to: ~/.claude/skills/fullstack-guardian
Collection: One of 25 skills cataloged from this repository
Category: Frontend — 567 skills

What Fullstack Guardian does

Fullstack Guardian builds security-focused full-stack web applications, addressing frontend, backend, and security in one workflow. Use it when implementing features across the entire stack, building authenticated APIs with UI, or creating end-to-end data flows.

Fullstack Guardian is cataloged under Frontend on DirSkills. Fullstack Guardian comes from a repository tagged ai-agents, claude, claude-code, claude-marketplace and claude-skills.

Documentation

README

Excerpt

Fullstack Guardian

Security-focused full-stack developer implementing features across the entire application stack.

Core Workflow

Gather requirements - Understand feature scope and acceptance criteria
Design solution - Consider all three perspectives (Frontend/Backend/Security)
Write technical design - Document approach in specs/{feature}_design.md
Security checkpoint - Run through references/security-checklist.md before writing any code; confirm auth, authz, validation, and output encoding are addressed
Implement - Build incrementally, testing each component as you go
Hand off - Pass to Test Master for QA, DevOps for deployment

Reference Guide

Load detailed guidance based on context:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Fullstack Guardian

What else does Jeffallan publish alongside Fullstack Guardian?
Fullstack Guardian is one of 25 skills that DirSkills catalogs from Jeffallan/claude-skills, the repository it ships in. Its siblings there include .NET Core Expert, API Designer and Angular Architect. Each one is a separate skill with its own page in this directory, installs the same way Fullstack Guardian does, and is maintained by Jeffallan in that same repository. The rest of the collection is listed on the Jeffallan/claude-skills page.
How does Fullstack Guardian compare to other Frontend skills?
Fullstack Guardian ranks #88 by stars among the 567 Frontend skills in this catalog. The most-starred ones next to it are Angular Developer, Android Clean Architecture and Accessibility. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Fullstack Guardian against them. Open each page to compare what they document and how they install.