Conversor IAE-CNAE MCP MCP server

Official fiscal data server providing 19 tools for Spanish tax compliance, including IAE/CNAE classification, AEAT obligation calendars, IRPF/IVA calculations, and RETA quotas. It exposes official data from AEAT, INE, and BOE to AI agents via Streamable HTTP, with 18 free tools and one premium bulk query tool.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Conversoria ECNAE

MCP endpoint (Streamable HTTP)

https://www.conversoriaecnae.es/api/mcp/mcp

Vendor documentation

What you can do with it

Search IAE/CNAE codes semantically
Retrieve fiscal obligation calendars
Calculate IRPF and RETA quotas
Query official BOE legislation text

Tools advertised by the last live check:

buscar_codigo
detalle_iae
detalle_cnae
detalle_cnae_2009
calendario_fiscal
describe_conversor
escala_irpf
gastos_deducibles
obligaciones_fiscales
modulos_irpf_iva
cuota_reta
cuota_irpf
buscar_doctrina_teac
empresas_por_actividad
subvenciones_por_actividad
tarifa_at_ep
texto_normativa
consulta_dgt
consulta_masiva

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http conversor-iae-cnae-mcp https://www.conversoriaecnae.es/api/mcp/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add conversor-iae-cnae-mcp --url https://www.conversoriaecnae.es/api/mcp/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable conversor-iae-cnae-mcp in your MCP settings.

Cursor configuration

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

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

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

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start conversor-iae-cnae-mcp and inspect its tools.

VS Code configuration

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

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http conversor-iae-cnae-mcp https://www.conversoriaecnae.es/api/mcp/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

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

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "conversor-iae-cnae-mcp": {
      "serverUrl": "https://www.conversoriaecnae.es/api/mcp/mcp"
    }
  }
}

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