x402_payQuote

SERVERBitcoin SV MCP Server SOURCEb-open-io/bsv-mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/b-open-io-bsv-mcp/x402-payquote.md

WHAT IT DOES

What x402_payQuote does on Bitcoin SV MCP Server

AI agents use x402_payQuote to commit financial operations through Bitcoin SV MCP Server, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why x402_payQuote is rated Critical

Transfers money from user's wallet to pay for services; irreversible financial commitment with potential for unintended transactions.

From the tool's definition Pay...BSV service request from connected wallet, return response.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs x402_payQuote safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Bitcoin SV MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For x402_payQuote, this is the rule to start with:

x402_payQuote Approval-gated

Any call to x402_payQuote 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": {
    "x402_payQuote": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Bitcoin SV MCP Server, apply this rule, and every x402_payQuote call is checked against it from then on.

FAQ

Questions about x402_payQuote

What does the x402_payQuote tool do? +

Pay a previously quoted BSV service request from the connected wallet, then return its response. Only call after authorization for the service, amount, and total limit including mining fees. Reuses the stored URL, method, body and credentials. Wallet permission checks apply. Does not automatically pay changed terms or retry a failed payment. It is categorised as a Financial tool in the Bitcoin SV MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on x402_payQuote? +

Register the Bitcoin SV MCP Server MCP server in PolicyLayer and add a rule for x402_payQuote: 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 Bitcoin SV MCP Server. Nothing to install.

What risk level is x402_payQuote? +

x402_payQuote 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 x402_payQuote? +

Yes. Add a rate_limit block to the x402_payQuote 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 x402_payQuote completely? +

Set action: deny in the PolicyLayer policy for x402_payQuote. 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 x402_payQuote? +

x402_payQuote is provided by the Bitcoin SV MCP Server MCP server (b-open-io/bsv-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Bitcoin SV MCP Server, and thousands of servers like it.

This server

All 90 Bitcoin SV MCP Server tools → Critical-risk tools on this server →

Across the catalogue

request_x402_payment on Pop Pay →pay_x402 on 8004swap →x402_call on X402 Buyer → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →