Tlaloc MCP Server

Connect Claude, ChatGPT, and any AI assistant to official Mexican data.

The Tlaloc MCP (Model Context Protocol) server gives AI assistants and agents live, authenticated access to official Mexican data sources: CURP (RENAPO), RFC (SAT), postal codes (SEPOMEX), phone numbers (IFT), SPEI payment receipts / CEP (Banxico), CFDI status (SAT), semantic search over the Diario Oficial de la Federación (DOF), and geocoding with the official Mexican geostatistical framework (INEGI/INE). Pay per call in MXN via SPEI — no credit card, no subscription.

22 read-only tools, one API key. This is a data lookup server — an assistant asks a question and gets an authoritative answer. It is not a KYC/onboarding workflow platform: there are no sessions to create, no state to manage, nothing to write.

Why

• AI-native. Validate a CURP, verify an RFC, search the DOF, or geocode an address straight from your assistant or agent — no glue code.

• Official sources. RENAPO, SAT, SEPOMEX, IFT, Banxico, DOF, INEGI/INE.

• The full Mexican catalog. Identity, tax, addresses, payments, the official gazette and the geostatistical framework — under one tlmx_ API key.

• Fair, transparent pricing. Pay per call, published per tool (below). Prepaid via SPEI, no minimum, no monthly fee.

Related MCP server: mcp-fiscal-brasil

Quick start

1. Create an account and generate an API key at https://console.tlaloc.sh (keys look like tlmx_...).

2. Add the server to your MCP client:

Claude Code

claude mcp add --transport http tlaloc \
  https://api.tlaloc.sh/mx/mcp \
  --header "Authorization: Bearer tlmx_YOUR_API_KEY"

Claude Desktop / other MCP clients (JSON config)

{
  "mcpServers": {
    "tlaloc": {
      "transport": "http",
      "url": "https://api.tlaloc.sh/mx/mcp",
      "headers": { "Authorization": "Bearer tlmx_YOUR_API_KEY" }
    }
  }
}

• Endpoint: https://api.tlaloc.sh/mx/mcp

• Transport: StreamableHTTP (HTTP)

• Auth: Authorization: Bearer tlmx_YOUR_API_KEY (OAuth is also supported)

More ready-to-run snippets (curl, Python, JavaScript, Claude Desktop config) live in examples/.

Tools

Prices in MXN units (1 unit = $1 MXN, VAT included). Tools marked free cost nothing to call.

Identity — CURP (RENAPO)

Tax — RFC & CFDI (SAT)

Addresses & phones

Payments — SPEI / CEP (Banxico)

Official gazette — DOF (Diario Oficial de la Federación)

Semantic + keyword search over Mexico's official gazette, 2002–present, with a named entity layer (agencies, NOMs, decrees, people).

Geo — geocoding & official geostatistical framework (INEGI / INE)

Example prompts

• "Validate this CURP and tell me if it's valid and who it belongs to."

• "Is RFC GODE561231GR8 active and able to issue invoices (CFDI)?"

• "What did the DOF publish about remote work (teletrabajo)?"

• "Find every DOF publication that mentions NOM-035-STPS-2018."

• "Geocode 'Av. Reforma 222, Cuauhtémoc, CDMX' and tell me which colonia it falls in."

• "What neighborhoods are in postal code 06700?"

• "Which carrier owns the number 55 1234 5678, and has it been ported?"

• "Download and verify the SPEI CEP for this transfer."

Pricing

Prepaid units, 1 unit = $1 MXN (VAT included). Top up via SPEI — no card, no minimum, no subscription. Full pricing: https://www.tlaloc.sh/en/pricing.html

Links

• Website: https://www.tlaloc.sh

• API docs (OpenAPI/Swagger): https://api.tlaloc.sh/mx/docs

• Console (get your API key): https://console.tlaloc.sh

• DOF search: https://www.tlaloc.sh/en/services/dof.html

• Guide (EN): https://www.tlaloc.sh/en/blog/mexico-api-mcp.html

• Contact: hello@tlaloc.sh

Español

Servidor MCP de Tlaloc: conecta Claude, ChatGPT y cualquier asistente de IA con datos oficiales de México — CURP (RENAPO), RFC y estado de CFDI (SAT), códigos postales (SEPOMEX), teléfonos (IFT), comprobantes SPEI/CEP (Banxico), búsqueda semántica del Diario Oficial de la Federación (DOF) y geocodificación con el marco geográfico oficial (INEGI/INE). Pago por consulta vía SPEI, sin tarjeta.

22 herramientas de solo lectura, una sola API key. Es un servidor de consulta de datos: el asistente pregunta y obtiene una respuesta autoritativa. No es una plataforma de flujos KYC/onboarding — no hay sesiones que crear ni estado que administrar.

claude mcp add --transport http tlaloc \
  https://api.tlaloc.sh/mx/mcp \
  --header "Authorization: Bearer tlmx_TU_API_KEY"

Crea tu API key en https://console.tlaloc.sh · Guía completa en español: https://www.tlaloc.sh/es/blog/mexico-api-mcp.html · Búsqueda del DOF: https://www.tlaloc.sh/es/services/dof.html