senior-fullstack

senior-fullstack is a skill for Claude Code, Codex from yezannnnn/agentGroup. It costs 48 tokens per session (1,758 once invoked), scanned A, original, MIT.

A toolkit for starting and reviewing full-stack web projects, covering Next.js, FastAPI with React, MERN, and Django with React. It provides project templates and code-quality analysis.

In plain words
What is it for?
Use it to scaffold a new web project, choose among supported technology stacks, review code quality, and check a codebase for security issues.
Why use it?
It reduces the time spent creating the basic folders, configuration, and starter code for a web application. It also helps identify quality and security issues in an existing codebase.

Skill for Claude CodeCodex

Part of the engineering-skills plugin — 17 skills shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/yezannnnn/agentgroup/senior-fullstack
Any agent
npx skills add yezannnnn/agentGroup --skill senior-fullstack
Clone the repo
git clone --depth 1 https://github.com/yezannnnn/agentGroup

Made for: Claude Code, Codex.

Or install engineering-skills, the plugin that ships this one along with the rest of its 17 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for senior-fullstack

README.md
[![agentmods](https://agentmods.dev/badge/skills/yezannnnn/agentgroup/senior-fullstack.svg)](https://agentmods.dev/skills/yezannnnn/agentgroup/senior-fullstack)
Your own site
<a href="https://agentmods.dev/skills/yezannnnn/agentgroup/senior-fullstack"><img src="https://agentmods.dev/badge/skills/yezannnnn/agentgroup/senior-fullstack.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,758 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00048 $0.01758
Opus 5 $0.00024 $0.00879
Sonnet 5 $0.00010 $0.00352
Haiku 4.5 $0.00005 $0.00176

Measured 5d ago against content hash 49626b216897, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

senior-fullstack scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/code_quality_analyzer.py, scripts/project_scaffolder.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

jarvis/skills/engineering-team/senior-fullstack/SKILL.md · 282 lines

How it starts

The opening of the file, as written. The whole thing — 282 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Senior Fullstack

Fullstack development skill with project scaffolding and code quality analysis tools.


Table of Contents


Trigger Phrases

Use this skill when you hear:

  • "scaffold a new project"
  • "create a Next.js app"
  • "set up FastAPI with React"
  • "analyze code quality"
  • "check for security issues in codebase"
  • "what stack should I use"
  • "set up a fullstack project"
  • "generate project boilerplate"

Tools

Project Scaffolder

Generates fullstack project structures with boilerplate code.

Supported Templates:

  • nextjs - Next.js 14+ with App Router, TypeScript, Tailwind CSS
  • fastapi-react - FastAPI backend + React frontend + PostgreSQL
  • mern - MongoDB, Express, React, Node.js with TypeScript
  • django-react - Django REST Framework + React frontend

Usage:

# List available templates
python scripts/project_scaffolder.py --list-templates

# Create Next.js project
python scripts/project_scaffolder.py nextjs my-app

# Create FastAPI + React project
python scripts/project_scaffolder.py fastapi-react my-api

# Create MERN stack project
python scripts/project_scaffolder.py mern my-project

# Create Django + React project
python scripts/project_scaffolder.py django-react my-app

# Specify output directory
python scripts/project_scaffolder.py nextjs my-app --output ./projects

# JSON output
python scripts/project_scaffolder.py nextjs my-app --json

Parameters:

Parameter Description
template Template name (nextjs, fastapi-react, mern, django-react)
project_name Name for the new project directory
--output, -o Output directory (default: current directory)
--list-templates, -l List all available templates
--json Output in JSON format

Output includes:

  • Project structure with all necessary files
  • Package configurations (package.json, requirements.txt)
  • TypeScript configuration
  • Docker and docker-compose setup
  • Environment file templates
  • Next steps for running the project

Read the full file on GitHub · 282 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 282 lines · 48 tokens per session scan A 49626b216897

Subscribe to this mod's changes

senior-fullstack is a skill published in the GitHub repository yezannnnn/agentGroup (149 stars, last pushed 3mo ago), licensed MIT. It adds 48 tokens to every session and 1,758 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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