OpenArg — Argentina public data

org.openargv1.0.0Updated Sep 30, 2026

Argentina's official public data (INDEC, BCRA, 38 portals): search, read tables, cited answers.

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Overview

AI-generated overview

Lets an assistant search and read Argentina's official public datasets from INDEC, BCRA and 38 government portals, with cited sources.

What it does
Connects an assistant to a catalog of over 33,000 official Argentine public datasets from 38 government portals, including INDEC census, household survey, poverty, GDP and CPI data, the Central Bank, ministries, provinces and Congress. Tools include buscar_datasets for catalog search, describir_tabla for column types, row counts and samples, obtener_datos for CSV rows with column, date and equality filters, listar_fuentes for portal coverage, and consultar_datos_publicos for natural-language answers with sources. All tools are read-only and return the dataset title, portal and a link to the official file.
When to use it
Useful when an assistant needs official Argentine statistics or public data, such as inflation, poverty, GDP or central bank rates, and should cite the source. Choose data mode when the assistant should reason over rows itself, or answers mode when OpenArg should select and cross-check tables.
Requirements
A remote Streamable HTTP endpoint at Requires a free OpenArg API key sent in the Authorization header as a Bearer token. No local runtime is needed; the server is stateless and forwards the key to the OpenArg API.
Before you install
The Authorization header carries a secret API key, so keep it out of shared configuration and logs. Quotas apply per key: 200 data requests per day and 10 answers per day, resetting at 00:00 UTC. Answers mode uses a language model and can be wrong, so verify the linked source before publishing a figure. Data reflects what each agency publishes.

Installation

In SourceWeft

  1. Open OpenArg — Argentina public data in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "datos-publicos": {
      "type": "http",
      "url": "https://mcp.openarg.org/mcp"
    }
  }
}

README

OpenArg MCP — Argentina's public data, in your AI assistant

mcp.openarg.org · Español ↓

A remote Model Context Protocol server that connects Claude, Cursor, VS Code or your own agent to 33,000+ official Argentine public datasets from 38 government portals: INDEC (census, household survey, poverty, GDP, CPI), the Central Bank (BCRA), national ministries, provinces, municipalities and Congress.

Every answer comes with its source: the dataset title, the portal and a link to the official file.

  • Endpoint: https://mcp.openarg.org/mcp (Streamable HTTP)
  • Auth: Authorization: Bearer oarg_sk_…. Free key at openarg.org/desarrolladores
  • Cost: free

Quick start

Claude Code

bash
claude mcp add --transport http openarg https://mcp.openarg.org/mcp \  --header "Authorization: Bearer oarg_sk_YOUR_KEY"

Cursor (~/.cursor/mcp.json) and other clients with mcpServers

json
{  "mcpServers": {    "openarg": {      "url": "https://mcp.openarg.org/mcp",      "headers": { "Authorization": "Bearer oarg_sk_YOUR_KEY" }    }  }}

Claude Desktop (through mcp-remote)

json
{  "mcpServers": {    "openarg": {      "command": "npx",      "args": ["-y", "mcp-remote", "https://mcp.openarg.org/mcp",               "--header", "Authorization:${OPENARG_AUTH}"],      "env": { "OPENARG_AUTH": "Bearer oarg_sk_YOUR_KEY" }    }  }}

VS Code (.vscode/mcp.json). The key is asked once and stored encrypted.

json
{  "inputs": [{ "type": "promptString", "id": "openarg-key", "description": "OpenArg key", "password": true }],  "servers": {    "openarg": {      "type": "http",      "url": "https://mcp.openarg.org/mcp",      "headers": { "Authorization": "Bearer ${input:openarg-key}" }    }  }}

Your own agent. Put the key in OPENARG_API_KEY and tell your assistant:

Add the OpenArg MCP server following https://mcp.openarg.org/llms.txt. My key is in OPENARG_API_KEY. Test the connection with listar_fuentes.

Tools

All tools are read-only. Tool names and outputs are in Spanish; ask in any language.

ToolModeWhat it does
buscar_datasetsdataSearch the catalog: title, portal, official link and queryable tables
describir_tabladataColumns and types, row count, period covered, 5-row sample
obtener_datosdataRows as CSV (up to 500): pick columns, date range and equality filters. No SQL
listar_fuentesdataPortals covered and dataset count per portal
consultar_datos_publicosanswersA natural-language question answered by OpenArg, with sources and warnings

Data mode. Your assistant does the reasoning over the rows. It is fast (about 1 s) and allows 200 requests per day.

Answers mode. OpenArg picks the tables, cross-references them and checks the numbers against the source. It allows 10 questions per day.

Limits

Per key
Data mode200 requests/day, 30/min, up to 500 rows per request
Answers mode10 questions/day, 2/min

Quotas reset at 00:00 UTC. The full table is at mcp.openarg.org/limites.html. OpenArg reflects what each agency publishes. The answers mode uses a language model and can be wrong, so check the linked source before publishing a figure.

This repository

This is the code of the server behind mcp.openarg.org:

  • mcp_publico/core.py: pure logic, standard library only.
  • mcp_publico/server.py: MCP SDK and HTTP routes.
  • mcp_publico/site/: the website.

The server is stateless and makes no decisions about quotas or authentication. It forwards the user's key to the OpenArg API, which validates it, applies the quota and answers. Running it yourself only makes sense next to an OpenArg backend (BACKEND_URL). To just use the data, connect to the hosted endpoint above.

It is developed in colossus-lab/openarg_backend (mcp_publico/) and mirrored here.

Español

OpenArg MCP conecta tu asistente de IA a más de 33.000 datasets públicos oficiales de Argentina, de 38 portales: el INDEC (censos, EPH, pobreza, PIB, IPC), el BCRA, ministerios, provincias, municipios y el Congreso. Cada dato viene con su fuente oficial.

  1. Conseguí tu clave gratis en openarg.org/desarrolladores.
  2. Conectá https://mcp.openarg.org/mcp con el header Authorization: Bearer oarg_sk_…. Hay guías para cada cliente en mcp.openarg.org/empezar.html.
  3. Preguntá: "¿Cómo viene la tasa BADLAR en 2026?", "Mostrame el gasto público por ministerio del último ejercicio".

Hay dos modos. El modo datos permite 200 pedidos por día: tu asistente busca y lee las tablas. El modo respuestas permite 10 preguntas por día: OpenArg arma la respuesta y verifica los números.

License

MIT. Un proyecto de Colossus Lab · [email protected]

Source: README.md at commit bf03984

Tools

0
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Version history

1
  1. v1.0.0LatestSep 30, 2026