execute_x402_endpoint

Execute an x402 API endpoint. Payment is handled automatically. Supported sources: - x402.biwas.xyz (default): Use path like

SERVERAibtc SOURCEaibtcdev/aibtc-mcp-server

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/io-github-aibtcdev-mcp-server/execute-x402-endpoint.md

WHAT IT DOES

What execute_x402_endpoint does on Aibtc

AI agents use execute_x402_endpoint to commit financial operations through Aibtc, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why execute_x402_endpoint is rated Critical

The tool explicitly states that 'payment is handled automatically' when executing x402 API endpoints. x402 is a payment protocol built on HTTP 402 (Payment Required), meaning this tool can autonomously trigger financial transactions.

From the tool's definition Execute an x402 API endpoint. Payment is handled automatically.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs execute_x402_endpoint safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Aibtc, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For execute_x402_endpoint, this is the rule to start with:

execute_x402_endpoint Approval-gated

Any call to execute_x402_endpoint 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": {
    "execute_x402_endpoint": {
      "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 Aibtc, apply this rule, and every execute_x402_endpoint call is checked against it from then on.

FAQ

Questions about execute_x402_endpoint

What does the execute_x402_endpoint tool do? +

Execute an x402 API endpoint. Payment is handled automatically. Supported sources: - x402.biwas.xyz (default): Use path like. It is categorised as a Financial tool in the Aibtc MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on execute_x402_endpoint? +

Register the Aibtc MCP server in PolicyLayer and add a rule for execute_x402_endpoint: 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 Aibtc. Nothing to install.

What risk level is execute_x402_endpoint? +

execute_x402_endpoint 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 execute_x402_endpoint? +

Yes. Add a rate_limit block to the execute_x402_endpoint 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 execute_x402_endpoint completely? +

Set action: deny in the PolicyLayer policy for execute_x402_endpoint. 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 execute_x402_endpoint? +

execute_x402_endpoint is provided by the Aibtc MCP server (aibtcdev/aibtc-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Aibtc, and thousands of servers like it.

This server

All 358 Aibtc tools → Critical-risk tools on this server →

Across the catalogue

request_x402_payment on Pop Pay →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 →