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.
git clone --depth 1 https://github.com/Mazalucas/El-DT-Lightweight-ArmyWrote 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.
[](https://agentmods.dev/rules/mazalucas/el-dt-lightweight-army/15-engineering-reuse)<a href="https://agentmods.dev/rules/mazalucas/el-dt-lightweight-army/15-engineering-reuse"><img src="https://agentmods.dev/badge/rules/mazalucas/el-dt-lightweight-army/15-engineering-reuse/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.
<a href="https://agentmods.dev/rules/mazalucas/el-dt-lightweight-army/15-engineering-reuse"><img src="https://agentmods.dev/badge/rules/mazalucas/el-dt-lightweight-army/15-engineering-reuse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00000 | $0.00409 |
| Opus 5 | $0.00000 | $0.00204 |
| Sonnet 5 | $0.00000 | $0.00082 |
| Haiku 4.5 | $0.00000 | $0.00041 |
Grade A, and why
15-engineering-reuse 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 7d 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.
What it actually says
Ingeniería reuse-first
Carga automática con globs de código en manifest. Detalle: docs/03_reference/engineering-reuse-default.md (DOC-REF-006) · skill .cursor/skills/engineering-reuse/SKILL.md.
Cuándo aplica
Al proponer, escribir o modificar código ejecutable (backend, frontend, infra, tests, Remotion). No aplica a PRD/copy puro, docs narrativos, pulse del framework.
Jerarquía (orden estricto)
- Extender código existente del repo
- Design system / librería ya adoptada
- Primitivas del framework
- Crear nuevo — solo sin alternativa razonable; documentar por qué
Pipeline
Mapear → Reutilizar → Extender → Crear
Discover before create · diff mínimo · YAGNI · un concepto, un módulo (no utils2, *-v2 paralelos).
Prohibiciones
Duplicar helpers/validators/UI/CI stages con la misma responsabilidad; copiar-pegar entre capas; clonar composiciones Remotion enteras.
Entregable (código)
## Qué reutilicé
- [artefacto] — [cómo se extendió]
## Qué creé y por qué
- [módulo] — [motivo] (o N/A si todo extendido)
Delegación
Agentes de código: arquitecto, frontend, devops, qa, remotion-producer — incluir bloque reuse (ver 03-catalogo-subagentes).
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.
- 7d ago First seen · 47 lines · 0 tokens per session scan A 2ff437617c60
15-engineering-reuse is a cursor rule published in the GitHub repository Mazalucas/El-DT-Lightweight-Army (4 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 409 tokens. 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 2026-09-03.
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