A set of DevOps rules for automated checks and deployments. DevOps covers the tools and practices that build, test, and release software; CI/CD means running those steps automatically.

Use it to structure CI/CD stages, manage infrastructure as code, reuse existing workflows and caches, protect deployment secrets, and deploy to Firebase when that is the project's setup.

It reduces duplicated pipeline code and helps keep tests, security checks, configuration, and deployment steps consistent.

40-devops — Cursor rule for Cursor 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.

Clone the repo

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

Made for: Cursor.

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/rules/mazalucas/el-dt-lightweight-army/40-devops.svg)](https://agentmods.dev/rules/mazalucas/el-dt-lightweight-army/40-devops)

Your own site

<a href="https://agentmods.dev/rules/mazalucas/el-dt-lightweight-army/40-devops"><img src="https://agentmods.dev/badge/rules/mazalucas/el-dt-lightweight-army/40-devops.svg" alt="Measured on agentmods" height="20"></a>

Per session 0 Nothing until a file matches its globs; then the whole rule loads.

When invoked 462 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	$0.00000	$0.00462
Opus 5	$0.00000	$0.00231
Sonnet 5	$0.00000	$0.00092
Haiku 4.5	$0.00000	$0.00046

Measured 4d ago against content hash d4c8012be013, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

40-devops 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 4d 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.

.cursor/rules/40-devops.mdc · 46 lines

What it actually says

DevOps e infraestructura

Stack default del DT: ver regla 08-stack-web-default · deploy Firebase. Reuse-first: 15-engineering-reuse · DOC-REF-006 · skill devops.

Principios

IaC declarativo — workflows, firebase.json, Terraform/Pulumi versionados
DRY en pipelines — extender jobs/workflows existentes; matrices y reusable workflows antes de duplicar YAML
Secrets nunca en YAML — Firebase Secrets, GitHub Secrets, secret managers del cloud
Un script canónico — preferir package.json scripts invocados desde CI

Convenciones CI/CD

Reutilizar cache de dependencias (Node, etc.) ya configurada en el repo
Stages: lint → test → build → deploy (omitir solo si el repo no tiene toolchain)
Security checks en pipeline cuando existan (audit, SAST) — no inventar pipeline paralelo

Deploy (Firebase default)

Reutilizar firebase.json targets y --only existentes
Predeploy hooks compartidos para lint/test/build
Coordinar con arquitecto qué recursos se despliegan

Estrategias de deploy

Elegir según contexto del repo (documentar en entrega):

Rolling — default razonable para Hosting/Functions
Blue/green o canary — solo si el repo ya tiene patrón o hay requisito explícito

Rollback

Enlazar runbooks en docs/06_operations/ si existen
No documentar rollback ad hoc sin revisar procedimiento existente (skill devops/references/rollback-runbook.md)

Referencias

Skill táctica: .cursor/skills/devops/SKILL.md
Stack web: docs/03_reference/web-stack-default.md (DOC-REF-005)

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.

4d ago First seen · 46 lines · 0 tokens per session scan A d4c8012be013

Subscribe to this mod's changes

40-devops 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 462 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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40-devops