Tlaloc MCP server

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

straight from your assistant or agent — no glue code.

• AI-native. Validate a CURP, verify an RFC, search the DOF, or geocode an address

and the geostatistical framework — under one tlmx_ API key.

• Official sources. RENAPO, SAT, SEPOMEX, IFT, Banxico, DOF, INEGI/INE.
• The full Mexican catalog. Identity, tax, addresses, payments, the official gazette

SPEI, no minimum, no monthly fee.

• Fair, transparent pricing. Pay per call, published per tool (below). Prepaid via

Quick start

like tlmx_...).

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

1. 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 tlmxYOURAPI_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).

Shortened. The full README is on GitHub.