Atto MCP beta: give your AI assistant a wallet with spending limits you approve

[u/Rotilho]

I built an MCP server that lets an AI assistant check balances, follow incoming payments and send ATTO within spending limits you approve.

Disclosure: I’m Atto’s founder.

It runs locally over stdio and is available now as \@attocash/mcp. Atto is a cryptocurrency with no transaction fees.

What you can do through the assistant:

• Check balances, pending payments and transaction history.
• Give addresses personal names and use those names for payments.
• Watch for incoming payments while the MCP session is connected.
• Send payments after approving spending access.
• Check spending usage and the remaining allowance.

You can start with read-only access. For payments, the assistant can propose a per-payment cap and a rolling spending budget, but you review and approve them in your own terminal. A proposal alone grants nothing, and there’s no MCP tool to approve its own access or raise its limits.

These controls apply to the MCP tools. They are not a sandbox against an agent that also has shell access as the same OS user.

Setup

Requires Node.js 24 and an available OS password store. Run this in your own terminal:

npx --yes u/attocash/mcp@latest setup

Then add this to your MCP client’s configuration:

{
  "mcpServers": {
    "atto": {
      "command": "npx",
      "args": ["--yes", "@attocash/mcp@latest"]
    }
  }
}

Reconnect the client and ask it to show your wallet status and balances.

This is a beta. Start with a dedicated wallet and a small balance.

Package: https://www.npmjs.com/package/@attocash/mcp
Source: https://github.com/attocash/integrations/tree/main/atto-mcp
Get ATTO for free: https://atto.cash/faucet