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).
We read the source, 5 d ago · rules 995398eba69f
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.
const res = (await this.kv.eval(
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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.
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.
claude mcp add mcp -- npx -y @ar-agents/mcp
{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@ar-agents/mcp"
]
}
}
}
[mcp_servers.mcp]
command = "npx"
args = ["-y", "@ar-agents/mcp"]
{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@ar-agents/mcp"
]
}
}
}
{
"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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Answers built from our own checks of this server.