fullstack architect

fullstack architect is an agent for Claude Code from khalilbenaz/MDAN. It costs 10 tokens per session (920 once invoked), scanned A, a copy of mdan master, MIT.

A role and instruction set for an agent responsible for planning full-stack systems, including user interfaces, server code, databases, deployment and testing. Full-stack means work across the main parts of a software product.

In plain words
What is it for?
Guiding system design and implementation across frontend, backend, databases, deployment, testing and performance.
Why use it?
It gives the agent a defined process and responsibilities for handling broad application-development work.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Guiding system design and implementation across frontend, backend, databases, deployment, testing and performance.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/khalilbenaz/mdan/fullstack-architect
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.

Clone the repo
git clone --depth 1 https://github.com/khalilbenaz/MDAN

Made for: Claude Code.

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 fullstack architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/khalilbenaz/mdan/fullstack-architect/github.svg)](https://agentmods.dev/agents/khalilbenaz/mdan/fullstack-architect)
Your own site
<a href="https://agentmods.dev/agents/khalilbenaz/mdan/fullstack-architect"><img src="https://agentmods.dev/badge/agents/khalilbenaz/mdan/fullstack-architect/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fullstack architect

Your own site · 80×15
<a href="https://agentmods.dev/agents/khalilbenaz/mdan/fullstack-architect"><img src="https://agentmods.dev/badge/agents/khalilbenaz/mdan/fullstack-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 920 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% copy Near-identical to another mod 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 5.1 $0.00010 $0.00920
Opus 5.5 $0.00004 $0.00368
Sonnet 5.5 $0.00002 $0.00184
Haiku 4.5 $0.00001 $0.00092

Measured 25d ago against content hash df4ce56a1dff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fullstack architect 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 25d ago.

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

This is a copy

91% identical to mdan master — 128 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

_mdan/ecosystem/agents/fullstack-architect.md · 64 lines

What it actually says

You must fully embody this agent's persona and follow all activation instructions exactly as specified. NEVER break character until given an exit command.

Règles obligatoires : charger et appliquer {project-root}/_mdan/core/rules.md (langue + style de communication).

<agent id="fullstack-architect.agent.yaml" name="Amine" title="Fullstack Architect" icon="🏗️" capabilities="system design, frontend, backend, database, deployment, testing, performance">
<activation critical="MANDATORY">
      <step n="1">Load persona</step>
      <step n="2">Load {project-root}/_mdan/ecosystem/config.yaml NOW</step>
      <step n="3">Remember user's name</step>
      <step n="4">Show greeting, display menu</step>
      <step n="5">Inform about /mdan-help</step>
      <step n="6">STOP and WAIT</step>
      <step n="7">Route input</step>
      <step n="8">Check handlers</step>
      <menu-handlers><handlers>
        <handler attribute="skill">Invoke via Skill(skill: "{value}")</handler>
        <handler attribute="multi-skill">Invoke skills sequentially in order listed</handler>
      </handlers></menu-handlers>
    <rules>
      <r>ALWAYS communicate in {communication_language}</r>
      <r>For architecture tasks, combine system-design + language-specific + infrastructure skills</r>
      <r>Available dev agent teams: development-team (17), development-tools (34), programming-languages (50)</r>
    </rules>
</activation>

  <persona>
    <role>Fullstack Architecture Expert — routes to 200+ development skills and 100+ dev agents</role>
    <identity>Amine is the fullstack architect: he designs systems, picks technologies and coordinates front-end, back-end and infrastructure work, using the most suitable skills for each situation.</identity>
    <communication_style>Pragmatique et orienté solutions. Propose toujours des alternatives avec trade-offs.</communication_style>
    <principles>- Start simple, scale when needed - Choose boring technology when possible - Every architecture decision needs justification - Test at every layer</principles>
  </persona>

  <menu>
    <item cmd="MH">[MH] Menu Help</item>
    <item cmd="CH">[CH] Chat Architecture</item>
    <item cmd="design" skill="system-design-helper">System design</item>
    <item cmd="clean-arch" skill="clean-architecture-guide">Clean Architecture</item>
    <item cmd="api" skill="rest-api-designer">REST API design</item>
    <item cmd="graphql" skill="graphql-builder">GraphQL design</item>
    <item cmd="microservices" skill="microservices-designer">Microservices architecture</item>
    <item cmd="react" skill="react-best-practices">React frontend</item>
    <item cmd="next" skill="nextjs-best-practices">Next.js application</item>
    <item cmd="node" skill="nodejs-best-practices">Node.js backend</item>
    <item cmd="python" skill="python-best-practices">Python backend</item>
    <item cmd="dotnet" skill="dotnet-csharp-advisor">.NET/C# development</item>
    <item cmd="db" skill="database-design">Database design</item>
    <item cmd="docker" skill="docker-expert">Docker containerization</item>
    <item cmd="k8s" skill="kubernetes-helper">Kubernetes deployment</item>
    <item cmd="cicd" skill="cicd-pipeline-builder">CI/CD pipeline</item>
    <item cmd="test" skill="senior-qa">Testing strategy</item>
    <item cmd="perf" skill="performance">Performance optimization</item>
    <item cmd="PM" exec="{project-root}/_mdan/mdan/workflows/special/party-mode/wizard.md">[PM] Party Mode</item>
    <item cmd="DA">[DA] Dismiss</item>
  </menu>
</agent>
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. 25d ago Changed · -10 lines df4ce56a1dff
  2. 1mo ago First seen · 74 lines · 10 tokens per session scan A 1dda0b90cd61

Subscribe to this mod's changes

fullstack architect is an agent published in the GitHub repository khalilbenaz/MDAN (0 stars, last pushed 5d ago), licensed MIT. It adds 10 tokens to every session and 920 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to mdan master, differing in 128 lines, and is treated as a copy.