sendPayment · Algorand MCP Server MCP: Risk & Policy

WHAT IT DOES

What sendPayment does on Algorand MCP Server

AI agents use sendPayment to commit financial operations through Algorand MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why sendPayment needs a policy

This tool moves cryptocurrency (ALGO) between accounts, which is a direct financial transaction on the Algorand blockchain. Misuse could result in irreversible loss of funds, making it critical severity. The tool directly transfers monetary value, placing it firmly in the Financial category.

From the tool's definition Send ALGO payment from one account to another

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sendPayment Approval-gated

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

View as policy code

policy.json

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

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Algorand MCP Server, so you can run agents against it safely.

FAQ

Questions about sendPayment

What does the sendPayment tool do? +

Send ALGO payment from one account to another. If privateKey not provided, uses test account from environment. It is categorised as a Financial tool in the Algorand MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on sendPayment? +

Register the Algorand MCP Server MCP server in PolicyLayer and add a rule for sendPayment: 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 Algorand MCP Server. Nothing to install.

What risk level is sendPayment? +

sendPayment 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 sendPayment? +

Yes. Add a rate_limit block to the sendPayment 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 sendPayment completely? +

Set action: deny in the PolicyLayer policy for sendPayment. 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 sendPayment? +

sendPayment is provided by the Algorand MCP Server MCP server (tairon-ai/algorand-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.