Borrowing it
Nothing to install: this file belongs to FacturaScripts/fs-claude-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/FacturaScripts/fs-claude-plugin/main/CLAUDE.mdgit clone --depth 1 https://github.com/FacturaScripts/fs-claude-pluginWrote 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/instructions/facturascripts/fs-claude-plugin/claude-md)<a href="https://agentmods.dev/instructions/facturascripts/fs-claude-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/facturascripts/fs-claude-plugin/claude-md/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/instructions/facturascripts/fs-claude-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/facturascripts/fs-claude-plugin/claude-md.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 | $0.01766 | $0.01766 |
| Opus 5 | $0.00883 | $0.00883 |
| Sonnet 5 | $0.00353 | $0.00353 |
| Haiku 4.5 | $0.00177 | $0.00177 |
Grade B, and why
fs-claude-plugin CLAUDE.md scanned grade B with 1 finding 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 2d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- No edites manualmente `~/.codex/config.toml`, caches de plugins ni archivos de marketplace del usuario para simular una actualización. How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Instrucciones del proyecto para Claude Code y Codex
Este repositorio distribuye los plugins fs-dev, fs-user y fs-mcp de FacturaScripts. Aunque el repositorio conserva el nombre fs-claude-plugin, el código debe funcionar tanto en Claude Code como en Codex.
Reglas generales
- Trabaja únicamente dentro de este repositorio, salvo que el usuario autorice expresamente otra carpeta.
- Nunca crees commits, ramas, tags, pushes ni publicaciones sin una petición expresa del usuario.
- Conserva los cambios ajenos presentes en el árbol de trabajo y no reviertas archivos que no formen parte de la tarea.
- No expongas tokens, credenciales ni el contenido sensible de
~/.fs-claude.json. - No crees archivos temporales, informes de auditoría o resúmenes dentro del repositorio salvo que el usuario pida expresamente conservarlos. Comunica los resultados en el chat.
Fuentes de verdad
- Para verificar clases y patrones de FacturaScripts, consulta el código local en
/Users/daniel89fg/Trabajos/FacturaScripts/facturascripts. - Para comportamiento específico de Claude Code, consulta la documentación vigente en https://code.claude.com/docs/.
- Para comportamiento específico de Codex, consulta la documentación oficial vigente en https://developers.openai.com/codex/ y https://learn.chatgpt.com/docs/.
- No supongas que una característica de un host existe en el otro. Verifica especialmente hooks, agentes, variables de entorno, manifiestos, instalación y recarga.
Arquitectura compartida
- Mantén un único marketplace y un único código fuente para ambos hosts. No crees un plugin paralelo para Codex salvo que una limitación técnica demostrada haga imposible compartir la implementación y el usuario acepte la separación.
- Conserva los identificadores
fs-dev,fs-user,fs-mcpy el marketplacefs-claude-plugin. - Conserva
~/.fs-claude.jsoncomo configuración compartida por retrocompatibilidad. - La matriz actual de compatibilidad está en
COMPATIBILITY.md. Actualízala únicamente cuando cambien capacidades, limitaciones o el flujo de recarga.
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.
- 2d ago First seen · 95 lines · 1,766 tokens per session scan B 11f5a4830544
fs-claude-plugin CLAUDE.md is an instructions file published in the GitHub repository FacturaScripts/fs-claude-plugin (8 stars, last pushed 2d ago), licensed MIT. It adds 1,766 tokens to every session, about $0.0088 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-11.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.