What is add-connection?

A setup guide for adding a FacturaScripts installation to the connection configuration used by the server.

Use it to add a named connection with an ERP URL, API token, and optional setting for self-signed HTTPS certificates.

It collects the address and access details in one configuration file, so the server can connect without repeated setup.

add-connection — Skill for Claude Code by FacturaScripts

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add FacturaScripts/fs-claude-plugin

Claude Code

/plugin install fs-mcp

Made for: Claude Code.

Or install fs-mcp, the plugin that ships this one along with the rest of its 4 skills.

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/facturascripts/fs-claude-plugin/add-connection/github.svg)](https://agentmods.dev/skills/facturascripts/fs-claude-plugin/add-connection)

Your own site

<a href="https://agentmods.dev/skills/facturascripts/fs-claude-plugin/add-connection"><img src="https://agentmods.dev/badge/skills/facturascripts/fs-claude-plugin/add-connection/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/facturascripts/fs-claude-plugin/add-connection"><img src="https://agentmods.dev/badge/skills/facturascripts/fs-claude-plugin/add-connection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,664 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	$0.00019	$0.01664
Opus 5.5	$0.00008	$0.00666
Sonnet 5.5	$0.00004	$0.00333
Haiku 4.5	$0.00002	$0.00166

Measured 1mo ago against content hash 2f4d35940b9f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

add-connection 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 1mo 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.

fs-mcp/skills/add-connection/SKILL.md · 185 lines

How it starts

The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Añadir Conexión a FacturaScripts

Este skill configura una nueva conexión a una instancia de FacturaScripts. Las conexiones se guardan en ~/.fs-claude.json, un archivo en el directorio home del usuario que funciona en cualquier sistema operativo (macOS, Linux, Windows) y es leído automáticamente por el servidor MCP sin necesidad de configuración adicional.

¿Qué necesitas?

Antes de comenzar, asegúrate de tener a mano:

Clave de conexión: Un identificador único (por ejemplo: empresa-principal, fs-demo)
Nombre descriptivo: Descripción legible (por ejemplo: "FacturaScripts Principal")
URL del ERP: La dirección completa (por ejemplo: https://facturascripts.miempresa.com)
Token API: El token de autenticación de FacturaScripts
Verificación SSL: Si la instalación usa HTTPS con certificado auto-firmado (típico en instalaciones locales), necesitarás desactivar la verificación

Pasos

1. Solicita la información

Te haré algunas preguntas para recopilar los datos necesarios:

¿Cuál es la clave de conexión? (identificador único, sin espacios)
¿Cuál es el nombre descriptivo?
¿Cuál es la URL de FacturaScripts?
¿Cuál es el token API?
¿Quieres que sea la conexión por defecto? (sí/no)
¿La instalación usa HTTPS con certificado auto-firmado o no verificable? (sí/no)

La última pregunta es especialmente relevante en estos casos:

Instalaciones locales (https://localhost, https://192.168.x.x, etc.)
Servidores de desarrollo con certificados auto-firmados
Cualquier instalación donde el navegador muestre advertencia de certificado

2. Detecta el entorno

Una vez recopilados los datos, ejecuta estos comandos para obtener la ruta correcta según el sistema operativo:

# Detectar sistema operativo y directorio home
python3 -c "import os, sys; home = os.path.expanduser('~'); print(os.path.join(home, '.fs-claude.json'))"

Esto devuelve la ruta exacta a ~/.fs-claude.json en cualquier SO:

macOS/Linux: /Users/username/.fs-claude.json o /home/username/.fs-claude.json
Windows: C:\Users\username\.fs-claude.json

Read the full file on GitHub · 185 lines

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.

1mo ago Changed · +1 lines 2f4d35940b9f
2mo ago First seen · 184 lines · 19 tokens per session scan A 7075ef6678dc

Subscribe to this mod's changes

add-connection is a skill published in the GitHub repository FacturaScripts/fs-claude-plugin (10 stars, last pushed 2d ago), licensed MIT. It adds 19 tokens to every session and 1,664 once invoked, about $0.0001 per session on Opus 5.5. 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.

add-connection next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
add-connectionFacturaScripts/fs-claude-plugin	Skill	10	2d ago	MIT	A	19	Claude Code
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code