Conversor IAE-CNAE

Name: Conversor IAE-CNAE
Author: conversoriaecnae

by conversoriaecnaeversion 1.0.1i★ –iRuns in the cloud

Registry nameio.github.conversoriaecnae/conversor-iae-cnae

Install

Overview

Description from the maker (original English)

The first fiscal MCP server for Spain: IAE/CNAE 2025, AEAT modelos, IRPF/IVA, RETA quota.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http conversor-iae-cnae https://www.conversoriaecnae.es/api/mcp/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "conversor-iae-cnae": {
      "url": "https://www.conversoriaecnae.es/api/mcp/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "conversor-iae-cnae": {
      "type": "http",
      "url": "https://www.conversoriaecnae.es/api/mcp/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret HTTP header
Bearer cvr_... (plan Profesional+, premium tools only)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account conversoriaecnae, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 18438 servers in this category
Published to the registry more recently than 9% of the other 18438 servers in this category
Basic checks equal to or better than 100% of the other 18438 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Conversor IAE-CNAE safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Tethered Trust

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Conversor IAE-CNAE — MCP Server

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The first fiscal MCP server for Spain. Connect any AI agent to live IAE, CNAE 2025, AEAT tax-form and RETA data — official sources, no scrapers.

6 tools free. No key. No signup. Add the endpoint and start asking.

This is the public manifest + docs repo for the hosted Conversor IAE-CNAE MCP server. The server runs at conversoriaecnae.es — there is nothing to install or self-host. This repo holds the server.json registry manifest, the connection details, the tool catalog, and copy-paste examples.

Why this exists

Autónomos and gestorías in Spain lose hours mapping IAE ↔ CNAE codes and guessing which AEAT forms (modelos 036/130/303/347…) apply to an activity. General-purpose AI agents make it worse: they confidently hallucinate tax facts that are wrong.

This server gives your agent a direct line to the real data — 1,187 IAE codes from the AEAT, 1,060 CNAE 2025 codes from the INE, the IAE↔CNAE crosswalk, módulos IRPF/IVA, AEAT obligations, and the 2026 RETA brackets — so it answers from official sources instead of guessing.

It is Spain-only, by design.

Connect in 30 seconds

The server speaks Streamable HTTP (MCP spec 2025-11-25; SSE is not exposed). Add it to your MCP client config:

"mcpServers": { "conversor-iae-cnae": { "type": "streamable-http", "url": "https://www.conversoriaecnae.es/api/mcp/mcp" } } }

For the 4 premium tools, add your cvr_ API key as a Bearer header inside the server block:

"mcpServers": { "conversor-iae-cnae": { "type": "streamable-http", "url": "https://www.conversoriaecnae.es/api/mcp/mcp", "headers": { "Authorization": "Bearer cvr_your_api_key" } } } }

Works with Claude Desktop / claude.ai (also available as a native connector), ChatGPT (developer-mode connectors), Cursor, Gemini CLI, and any MCP-compatible client.

Cursor one-click: the "Add to Cursor" deeplink lives on the connect page.
claude.ai connector: add https://www.conversoriaecnae.es/api/mcp/mcp as a custom connector (OAuth handles auth automatically).

The 10 tools

6 free (no key, no signup) · 4 premium (Profesional plan, from €29/mo — via a cvr_ key or Supabase OAuth).

Tool	Tier	What it does
`buscar_codigo`	Free	Semantic search across IAE / CNAE 2025 / CNAE 2009 by description
`detalle_iae`	Free	Full record for an IAE code + its associated CNAE codes
`detalle_cnae`	Free	Full record for a CNAE 2025 code + its associated IAE codes
`detalle_cnae_2009`	Free	A (legacy) CNAE 2009 code and its CNAE 2025 correspondence
`calendario_fiscal`	Free	AEAT forms and upcoming deadlines for a code
`describe_conversor`	Free	Self-description: catalogs, RPCs and data freshness
`obligaciones_fiscales`	Premium	Applicable AEAT forms with confidence, reason, frequency, deadline
`modulos_irpf_iva`	Premium	Estimación objetiva (módulos) régimen for an IAE code
`consulta_masiva`	Premium	Up to 50 IAE or CNAE records in a single call
`cuota_reta`	Premium	2026 RETA bracket + minimum quota from net income

Free vs premium

Free answers *what your code is* — search, look up, convert, and see the fiscal calendar. Enough to be useful on its own, with no account.
Premium answers *what you must file* — the obligations, the módulos régimen, bulk lookups for client portfolios, and the RETA quota. Built for gestorías, asesorías and fintech in production. From €29/mo, no commitment.

→ Get a key: [conversoriaecnae.es/api-precios?source=mcp](https://www.conversoriaecnae.es/api-precios?source=mcp)

Data sources

Official only: AEAT (Agencia Tributaria) for IAE codes and modelos, INE (Instituto Nacional de Estadística) for CNAE 2025, and the BOE for the underlying regulation. Every response carries a freshness signal, and describe_conversor exposes the catalogs and their update dates.

Conversor IAE-CNAE — Servidor MCP (Español)

El primer servidor MCP fiscal de España. Conecta tu agente de IA a códigos IAE, CNAE 2025, obligaciones AEAT y cuota RETA con datos oficiales.

6 herramientas gratis. Sin clave. Sin registro. Añade el endpoint y empieza a preguntar.

Este es el repositorio público de documentación y manifiesto del servidor MCP de Conversor IAE-CNAE. El servidor está alojado en conversoriaecnae.es — no hay nada que instalar. Aquí encontrarás el manifiesto server.json, cómo conectarte, el catálogo de herramientas y ejemplos.

Por qué existe

Las gestorías y los autónomos pierden horas mapeando códigos IAE ↔ CNAE y comprobando qué modelos AEAT (036/130/303/347…) aplican a cada actividad. Los agentes de IA genéricos lo empeoran: alucinan datos fiscales con total seguridad, y muchas veces son incorrectos.

Este servidor da a tu agente acceso directo a los datos reales —1.187 epígrafes IAE de la AEAT, 1.060 códigos CNAE 2025 del INE, la correspondencia IAE↔CNAE, módulos IRPF/IVA, obligaciones AEAT y los tramos del RETA 2026— para que responda con fuentes oficiales en lugar de adivinar.

Es solo para España, por diseño.

Conéctalo en 30 segundos

El servidor usa Streamable HTTP (MCP spec 2025-11-25; no se expone SSE). Añádelo a la configuración de tu cliente MCP:

"mcpServers": { "conversor-iae-cnae": { "type": "streamable-http", "url": "https://www.conversoriaecnae.es/api/mcp/mcp" } } }

Para las 4 herramientas premium, añade tu clave cvr_ como cabecera Bearer dentro del bloque del servidor:

"headers": { "Authorization": "Bearer cvr_tu_clave_api" }

Compatible con Claude Desktop / claude.ai (también como conector nativo), ChatGPT (conectores en modo desarrollador), Cursor, Gemini CLI y cualquier cliente compatible con MCP.

Las 10 herramientas

6 gratis (sin clave ni registro) · 4 premium (plan Profesional, desde 29 €/mes — con clave cvr_ o Supabase OAuth).

Herramienta	Plan	Qué hace
`buscar_codigo`	Gratis	Búsqueda semántica en IAE / CNAE 2025 / CNAE 2009 por descripción
`detalle_iae`	Gratis	Ficha completa de un epígrafe IAE y sus CNAE asociados
`detalle_cnae`	Gratis	Ficha completa de un CNAE 2025 y sus IAE asociados
`detalle_cnae_2009`	Gratis	Un CNAE 2009 (obsoleto) y su correspondencia a CNAE 2025
`calendario_fiscal`	Gratis	Modelos AEAT y próximos plazos de un código
`describe_conversor`	Gratis	Auto-descripción: catálogos, RPCs y frescura de datos
`obligaciones_fiscales`	Premium	Modelos AEAT aplicables con confianza, motivo, periodicidad y plazo
`modulos_irpf_iva`	Premium	Régimen de estimación objetiva (módulos) de un IAE
`consulta_masiva`	Premium	Hasta 50 fichas IAE o CNAE en una sola llamada
`cuota_reta`	Premium	Tramo y cuota mínima del RETA 2026 por rendimiento neto

Gratis vs premium

Gratis responde *cuál es tu código* — buscar, consultar, convertir y ver el calendario fiscal. Útil por sí solo, sin cuenta.
Premium responde *qué tienes que presentar* — obligaciones, régimen de módulos, consultas masivas para carteras de clientes y la cuota del RETA. Pensado para gestorías, asesorías y fintech en producción. Desde 29 €/mes, sin permanencia.

→ Consigue tu clave: [conversoriaecnae.es/api-precios?source=mcp](https://www.conversoriaecnae.es/api-precios?source=mcp)

Fuentes de datos

Solo oficiales: AEAT para epígrafes IAE y modelos, INE para CNAE 2025 y BOE para la normativa. Cada respuesta incluye la frescura de los datos, y describe_conversor expone los catálogos y sus fechas de actualización.

Contacto

Web: https://www.conversoriaecnae.es
Email: brian@conversoriaecnae.es

Conversor IAE-CNAE

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Tethered Trust

README from the maker

Conversor IAE-CNAE — MCP Server

Why this exists

Connect in 30 seconds

The 10 tools

Free vs premium

Data sources

Links

Conversor IAE-CNAE — Servidor MCP (Español)

Por qué existe

Conéctalo en 30 segundos

Las 10 herramientas

Gratis vs premium

Fuentes de datos

Contacto