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.

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)

Tool	What it does	Price
consultar_curp	Validate a CURP and return its data	0.25
crear_batch_curp	Create a batch of CURP lookups (up to 500)	0.25 / unique item
consultar_batch_curp	Batch summary and progress	free
listar_items_batch_curp	Paginated batch items	free
cancelar_batch_curp	Cancel a running batch	free

Tax — RFC & CFDI (SAT)

Tool	What it does	Price
validar_rfc	Verify an RFC: exists, active, can issue invoices	0.10
estado_cfdi	Check a CFDI's status by UUID (public SAT service)	0.05
consultar_cfdi_sat	Query CFDIs issued/received in the SAT portal (async)	0.30
estado_consulta_cfdi	Poll the result of an async CFDI query	free

Addresses & phones

Tool	What it does	Source	Price
consultar_codigo_postal	Postal code → neighborhoods, city, state	SEPOMEX	0.01
consultar_telefono	Phone number → carrier and portability	IFT	0.01

Payments — SPEI / CEP (Banxico)

Tool	What it does	Price
descargar_cep	Download a SPEI payment receipt (CEP)	0.10
consultar_cep	Verify a SPEI CEP	0.10
listar_instituciones_cep	List the CEP institutions catalog	free

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).

Tool	What it does	Price
buscar_dof	Search DOF publications by meaning or keywords	0.05
buscar_subsecciones_dof	Same, returning matching subsections (article/annex)	0.05
buscar_entidades_dof	Autocomplete DOF entities (agencies, NOMs, decrees)	0.05
unidades_por_entidad_dof	Where a given entity is mentioned	0.05
obtener_documento_dof	Full text of a publication + detected entities	0.10 (1.00 with highlights)
indice_ejemplar_dof	Table of contents of a full DOF issue	0.10

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

Tool	What it does	Price
geocodificar_direccion	Geocode a Mexican address (rooftop ~12 m, confidence, method)	0.05
consultar_marco_geografico	Reverse: state, municipality, AGEB, block, postal code, official INE colonia	0.02

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

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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

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<!-- Keywords objetivo (para README + descripción del repo + listados de directorio): MCP server Mexico, Mexican data MCP, CURP API MCP, RFC SAT API, SEPOMEX API, CEP SPEI API, DOF API, Diario Oficial API, geocoding Mexico MCP, marco geoestadístico INEGI API, validar CURP IA, validar RFC API, Model Context Protocol Mexico, Claude/ChatGPT Mexican data. -->