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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. 135 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 61 · avg 18 · +14% w/w
a month agotoday
135
Installs / week
npm · @ar-agents/mcp
1
Stars
1 open issues
28 Jul 2026
Last commit
0 releases in 90 days
MIT
License
TypeScript

What the code does

We read the source, 21 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

File ships in the package but is absent from the source [пакет] bin/ar-agents-mcp.js:1
этот файл ставится пользователю, но в репозитории его нет
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.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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": {
      "args": [
        "-y",
        "@ar-agents/mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.mcp]
command = "npx"
args = ["-y", "@ar-agents/mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@ar-agents/mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@ar-agents/mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: 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.). The author declared them in the registry entry; get the values from the project itself.

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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 135 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 with the file path 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 135 times in the last week. Week over week that is +14%. 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, 1 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.