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

Create an account and generate an API key at https://console.tlaloc.sh (keys look like tlmx_...).
Add the server to your MCP client:

Claude Code

Terminal

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)

config.json

{
  "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

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.