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Ar Agents MCP Server

by ar-agents Your server? Claim it
local only

Ar Agents runs on your own machine — the client starts it, so there is no endpoint to ping. 211 installs a week from npm. Last commit 28 Jul 2026.

Argentine business automation: Mercado Pago, AFIP/ARCA, WhatsApp, banking, shipping (7 packages).

Installs per day peak 85 · avg 15 · +521% w/w
a month agotoday
211
Installs / week
npm · @ar-agents/mcp
2
Stars
1 open issue
28 Jul 2026
Last commit
no releases in 90 days
MIT
License
TypeScript

What the code does

We read the source, 5 d ago · rules 995398eba69f

In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Executes code built at runtime packages/mercadopago/src/vercel-kv.ts:436
    const res = (await this.kv.eval(

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Nothing serious here today

Today is the operative word: we check Ar Agents every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add mcp -- npx -y @ar-agents/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ar-agents/mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.mcp]
command = "npx"
args = ["-y", "@ar-agents/mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ar-agents/mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@ar-agents/mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: MP_ACCESS_TOKEN (Mercado Pago access token (TEST- prefix for sandbox, APP_USR- for production). Enables MP tools), AFIP_CERT_PEM (AFIP/ARCA X.509 certificate (PEM string) for WSAA authentication. Enables CUIT padron + factura electronica tools), AFIP_KEY_PEM (AFIP/ARCA private key (PEM string) for WSAA authentication. Required if AFIP_CERT_PEM is set), AFIP_CUIT (Issuer CUIT (Argentine tax ID) registered with the AFIP cert. Format: 20-XXXXXXXX-X), WHATSAPP_ACCESS_TOKEN (Meta WhatsApp Business Cloud API token. Enables WhatsApp tools), WHATSAPP_PHONE_NUMBER_ID (Meta WhatsApp Business phone-number ID. Required if WHATSAPP_ACCESS_TOKEN is set).

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answering

Ar Agents — questions

Answers built from our own checks of this server.

Why is there no uptime for Ar Agents?
Ar Agents runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @ar-agents/mcp was installed 211 times last week.
How do I connect Ar Agents?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls @ar-agents/mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Ar Agents?
The npm package @ar-agents/mcp was installed 211 times in the last week. Week over week that is +521%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Ar Agents open source?
Yes — it is published under the MIT licence, written in TypeScript, 2 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.