make_x402_payment · Solana Trading MCP Server MCP

WHAT IT DOES

What make_x402_payment does on Solana Trading MCP Server

AI agents use make_x402_payment to commit financial operations through Solana Trading MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why make_x402_payment needs a policy

This tool directly moves funds by executing a micropayment via the x402 protocol on a Solana trading server. Financial transactions are irreversible on-chain, and misuse by an AI agent could result in unauthorized fund transfers. Classified as Financial with critical severity due to the direct monetary impact and irreversibility of blockchain payments.

From the tool's definition make_x402_payment" and "Make an x402 micropayment" — explicitly initiates a payment transaction

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

make_x402_payment Approval-gated

Any call to make_x402_payment 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": {
    "make_x402_payment": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about make_x402_payment

What does the make_x402_payment tool do? +

Make an x402 micropayment. It is categorised as a Financial tool in the Solana Trading MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on make_x402_payment? +

Register the Solana Trading MCP Server MCP server in PolicyLayer and add a rule for make_x402_payment: 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 Solana Trading MCP Server. Nothing to install.

What risk level is make_x402_payment? +

make_x402_payment 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 make_x402_payment? +

Yes. Add a rate_limit block to the make_x402_payment 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 make_x402_payment completely? +

Set action: deny in the PolicyLayer policy for make_x402_payment. 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 make_x402_payment? +

make_x402_payment is provided by the Solana Trading MCP Server MCP server (itskazgar/solana-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.