sendXPL · Plasma Testnet MCP Server MCP: Risk & Policy

WHAT IT DOES

What sendXPL does on Plasma Testnet MCP Server

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

WHY IT NEEDS A POLICY

Why sendXPL needs a policy

This tool moves cryptocurrency (XPL tokens) between wallets, which is a financial operation. Even on a testnet, misuse by an AI agent could result in unintended token transfers. The action is irreversible once confirmed on-chain, and the blast radius is high as it could drain wallet balances if misused.

From the tool's definition Send XPL to an address — directly transfers XPL tokens (cryptocurrency) to a target address on the Plasma Network blockchain testnet

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sendXPL Approval-gated

Any call to sendXPL 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": {
    "sendXPL": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about sendXPL

What does the sendXPL tool do? +

Send XPL to an address. It is categorised as a Financial tool in the Plasma Testnet MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on sendXPL? +

Register the Plasma Testnet MCP Server MCP server in PolicyLayer and add a rule for sendXPL: 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 Plasma Testnet MCP Server. Nothing to install.

What risk level is sendXPL? +

sendXPL 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 sendXPL? +

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

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

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