raw_send

THE RISK

Critical Risk

Why raw_send needs a policy

This tool directly moves Nano cryptocurrency from one account to another. This is a financial transaction that commits real monetary value and is essentially irreversible on a blockchain. Misuse by an AI agent could result in loss of funds with no recovery path, warranting critical severity.

From the tool's definition "Send a specified amount of raw units from a predefined Nano account to a destination Nano account"

Documented attack patterns abuse exactly the kind of access raw_send gives an agent:

POLICY

How to control raw_send

PolicyLayer is an MCP gateway — it sits between your AI agents and Nano Currency MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for raw_send:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "raw_send": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to raw_send is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Nano Currency MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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Free to start. No card required.

EXPLORE

Related tools and policies

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All 6 Nano Currency MCP Server tools →

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Go deeper

Critical-risk tools in Nano Currency MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about raw_send

What does the raw_send tool do? +

Send a specified amount of raw units from a predefined Nano account to a destination Nano account. It is categorised as a Financial tool in the Nano Currency MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on raw_send? +

Register the Nano Currency MCP Server MCP server in PolicyLayer and add a rule for raw_send: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Nano Currency MCP Server. Nothing to install.

What risk level is raw_send? +

raw_send is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit raw_send? +

Yes. Add a rate_limit block to the raw_send rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block raw_send completely? +

Set action: deny in the PolicyLayer policy for raw_send. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides raw_send? +

raw_send is provided by the Nano Currency MCP Server MCP server (kilkelly/nano-currency-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Nano Currency MCP Server tool call.

Start from Nano Currency MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →