Keycae Mcp

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# facturacion-electronica

# cae

Argentine electronic invoicing (facturación electrónica) MCP Server for ARCA/AFIP. Emit invoices, manage credentials, check delegations, and look up taxpayers — all directly from your AI agent. 🔥 10 tools ready: emit_invoice, get_invoice, list_invoices, list_credentials, create_credential, check_delegation, request_delegation, lookup_taxpayer, get_billing_status, keycae_health. ⚡ Zero setup: npx keycae-mcp and your agent can issue legal invoices in Argentina with CAE, PDF, and QR code.

Overview Tools Comments

Overview

keycae-mcp 🔌

MCP Server for KeyCAE.ar — Argentine electronic invoicing (facturación electrónica) with ARCA/AFIP.

Let AI agents emit invoices, manage credentials, and handle delegations directly.

⚡ Quick Start

npx keycae-mcp

That's it. Your AI agent now has 12 tools for Argentine invoicing.

☁️ Remote MCP Server (no installation required)

KeyCAE also exposes a native remote MCP server over SSE — no npx, no local setup. Connect directly from any cloud-based AI agent or MCP client that supports remote servers.

Endpoint: https://keycae.ar/v1/mcp/sse

Authentication: Get your API key at keycae.ar/dashboard

Claude Desktop (remote)

{
  "mcpServers": {
    "keycae-remote": {
      "url": "https://keycae.ar/v1/mcp/sse",
      "headers": {
        "Authorization": "Bearer sk_live_..."
      }
    }
  }
}

Cursor / Windsurf (remote)

{
  "mcpServers": {
    "keycae-remote": {
      "url": "https://keycae.ar/v1/mcp/sse?apiKey=sk_live_..."
    }
  }
}

💡 The remote connector is listed on Glama — browse it there to connect with one click from supported clients.

⚠️ Requisito: Delegación en ARCA

ANTES de facturar, debés delegar la facturación electrónica al representante de KeyCAE en ARCA:

Ingresá a ARCA Clave Fiscal
Buscá el servicio "Facturación Electrónica" (ws://wsfe)
Delegá al CUIT representante: 20254459306 (Amilcar Waldemar Serra)
Aceptá la relación de representación

Sin esta delegación, no podés emitir facturas. El MCP server te permite verificar el estado con check_delegation y solicitarla con request_delegation.

🔧 Configuration (local via npx)

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "keycae": {
      "command": "npx",
      "args": ["-y", "keycae-mcp"],
      "env": {
        "KEYCAE_API_KEY": "sk_live_..."
      }
    }
  }
}

Cursor / Windsurf

Add to .cursor/mcp.json in your project:

{
  "mcpServers": {
    "keycae": {
      "command": "npx",
      "args": ["-y", "keycae-mcp"],
      "env": {
        "KEYCAE_API_KEY": "sk_live_..."
      }
    }
  }
}

🛠️ Available Tools

Tool	Description
`emit_invoice`	Emit an Argentine electronic invoice (A, B, C, M, E)
`get_invoice`	Get details of a previously emitted invoice
`list_invoices`	List recent invoices
`list_credentials`	List digital certificates for the CUIT
`create_credential`	Generate RSA keypair + CSR for ARCA
`check_delegation`	Check ARCA delegation status
`request_delegation`	Request ARCA delegation for invoicing
`lookup_taxpayer`	Look up taxpayer by CUIT
`get_billing_status`	Check billing plan and usage
`keycae_health`	Health check
`list_puntos_de_venta`	List available sales points for the CUIT
`check_emission_capability`	Check if the CUIT can emit a given invoice type

💡 Example Usage

1. Check if ready to invoice

User: ¿Puedo facturar con el CUIT 20254459306?

Agent calls check_delegation → confirms delegation is active, then list_credentials → confirms certificate is valid.

2. Request delegation (if not done)

User: Necesito delegar mi facturación a KeyCAE

Agent calls request_delegation → starts the delegation process.

3. Emit a Factura B

User: Emití una factura B al CUIT 20333444555 por $15.000 ARS por "Servicios de consulting"

Agent calls emit_invoice:

{
  "cuit_emisor": "20254459306",
  "punto_de_venta": 3,
  "tipo_comprobante": "B",
  "receptor": { "tipo_doc": "CUIT", "nro_doc": "20333444555" },
  "conceptos": [{ "descripcion": "Servicios de consulting", "precio": 15000 }]
}

📋 Invoice Types

Type	Description	When to use
A	IVA discriminado	RI → RI
B	IVA incluido	RI → Consumidor Final
C	Exento	No genera IVA
M	Monotributo	Monotributo emitter
E	Exportación	International clients

🔗 Links

🌐 keycae.ar — API & Dashboard
📖 docs.keycae.ar — Documentation
📄 llms.txt — AI Agent Reference
🔌 mcp.so — MCP Directory
🤖 glama.ai/mcp/servers — Glama (local server)
☁️ glama.ai/mcp/connectors — Glama (remote connector)

keycae-ts — TypeScript SDK
keycae-cli — CLI tool

📄 License

MIT

Try in Playground

Server Config

{
  "mcpServers": {
    "keycae": {
      "command": "npx",
      "args": [
        "-y",
        "keycae-mcp"
      ]
    }
  }
}

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