A backend architecture workflow for designing APIs, databases, servers, and technical requirements documents. It first looks for existing patterns and modules before proposing new ones.

Use it to inspect backend files and architecture documents, choose or extend repository and service patterns, design API or database changes, and propose architecture decision records when needed.

It helps keep new backend work consistent with the repository's architecture and technology choices. It also makes structural decisions explicit when they may need an architecture record.

arquitecto — Skill for Claude Code and Codex by Mazalucas

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.

Any agent

npx skills add Mazalucas/El-DT-Lightweight-Army --skill arquitecto

Clone the repo

git clone --depth 1 https://github.com/Mazalucas/El-DT-Lightweight-Army

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mazalucas/el-dt-lightweight-army/arquitecto/github.svg)](https://agentmods.dev/skills/mazalucas/el-dt-lightweight-army/arquitecto)

Your own site

<a href="https://agentmods.dev/skills/mazalucas/el-dt-lightweight-army/arquitecto"><img src="https://agentmods.dev/badge/skills/mazalucas/el-dt-lightweight-army/arquitecto/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/mazalucas/el-dt-lightweight-army/arquitecto"><img src="https://agentmods.dev/badge/skills/mazalucas/el-dt-lightweight-army/arquitecto.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 577 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00036	$0.00577
Opus 5	$0.00018	$0.00289
Sonnet 5	$0.00007	$0.00115
Haiku 4.5	$0.00004	$0.00058

Measured 12d ago against content hash a38dc3b621ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

arquitecto 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 12d 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.

.agents/skills/arquitecto/SKILL.md · 55 lines

What it actually says

Protocolos DT (heredar)

Subagente del Director Técnico: ordenar, cuestionar, alternativas, Puntos ciegos / Mejoras detectadas, post-delegación (vitals/relay/handoff-template.md). Multi-agente: DEFER: <rol> fuera de alcance.

Reuse-first (obligatorio)

Leer skill engineering-reuse — references/discover-before-create.md (capa backend).
Pipeline: Mapear → Reutilizar → Extender → Crear.
Entrega con Qué reutilicé — engineering-reuse/references/deliverable-template.md.

Stack DT (desarrollo web)

vitals/data/engineering/web-stack.yaml · regla 08-stack-web-default.

Default: Cloud Functions (Node) + Firestore + Firebase Auth + reglas Firestore
Respetar stack del repo si difiere (soft default)
Escalation: Cloud Run + Firestore; SQL solo con opt-out explícito

Pipeline operativo

Discover — docs/04_architecture/, ADRs, firestore.rules, handlers en functions/ o backend/.
Patrones — references/pattern-matrix.md (Repository, Service, events).
Extender — references/firebase-modules.md antes de nuevos entrypoints.
Decisión estructural — references/adr-triggers.md → proponer ADR si aplica.
Entregar — componentes, API, esquema DB, escalabilidad, Qué reutilicé.

Cuándo NO sos vos

Pedido	Rol
UI / componentes	`DEFER: frontend`
CI / deploy	`DEFER: devops`
PRD → SRD documento largo	`DEFER: srd-creator` (vos validás arquitectura)
Tests	`DEFER: qa`

Reglas de dominio

10-arquitectura-backend (al editar backend)
15-engineering-reuse (siempre)
90-seguridad-secrets

Formato de salida

Componentes del sistema
Estructura de API
Esquema de base de datos (overview)
Escalabilidad y recomendaciones tecnológicas
Qué reutilicé / Qué creé y por qué
Puntos ciegos / Mejoras detectadas

Files

What ships with it

3 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.

12d ago First seen · 55 lines · 36 tokens per session scan A a38dc3b621ea

Subscribe to this mod's changes

arquitecto is a skill published in the GitHub repository Mazalucas/El-DT-Lightweight-Army (4 stars, last pushed 1mo ago), licensed MIT. It adds 36 tokens to every session and 577 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 2026-08-31.

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