x402Fetch

Fetch an HTTP resource, automatically paying with USDC via x402 if the server requires payment. Supports any x402-enabled API endpoint.

SERVERAgentek Eth SOURCEnanidao/agentek

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/nanidao-agentek/x402fetch.md

WHAT IT DOES

What x402Fetch does on Agentek Eth

AI agents use x402Fetch to commit financial operations through Agentek Eth, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why x402Fetch is rated Critical

This tool can autonomously spend USDC cryptocurrency to pay for HTTP resources. Any misuse or misdirection could result in financial loss, making it Financial category with critical severity since an AI agent could be tricked into making payments to arbitrary endpoints.

From the tool's definition automatically paying with USDC via x402 if the server requires payment

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs x402Fetch safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Agentek Eth, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For x402Fetch, this is the rule to start with:

x402Fetch Approval-gated

Any call to x402Fetch 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": {
    "x402Fetch": {
      "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 Agentek Eth, apply this rule, and every x402Fetch call is checked against it from then on.

FAQ

Questions about x402Fetch

What does the x402Fetch tool do? +

Fetch an HTTP resource, automatically paying with USDC via x402 if the server requires payment. Supports any x402-enabled API endpoint. It is categorised as a Financial tool in the Agentek Eth MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on x402Fetch? +

Register the Agentek Eth MCP server in PolicyLayer and add a rule for x402Fetch: 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 Agentek Eth. Nothing to install.

What risk level is x402Fetch? +

x402Fetch 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 x402Fetch? +

Yes. Add a rate_limit block to the x402Fetch 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 x402Fetch completely? +

Set action: deny in the PolicyLayer policy for x402Fetch. 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 x402Fetch? +

x402Fetch is provided by the Agentek Eth MCP server (nanidao/agentek). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Agentek Eth, and thousands of servers like it.

This server

All 193 Agentek Eth tools → Critical-risk tools on this server →

Across the catalogue

All critical-risk MCP tools → The MCP Attack Database →

Guides

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