// SCAN REPORT

X402 Buyer

4 tools. 2 can modify or destroy data without limits.

1 destructive tool with no built-in limits. Policy required.

Last updated: 3 Jul 2026

2 can modify or destroy data

2 read-only

4 tools total

Community server · catalogue entry checked 03/07/2026

How to control X402 Buyer ↓

TOOL MAP

What X402 Buyer exposes to your agents

Read (2) Write / Execute (1) Destructive / Financial (1)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous X402 Buyer tools

Financial · Critical x402_call This tool autonomously initiates and completes real cryptocurrency (USDC) payments on the Base blockchain as part of its core operation. Execute · Critical x402_research This tool executes arbitrary external API calls to unknown endpoints determined dynamically based on input.

2 of X402 Buyer's 4 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control X402 Buyer

PolicyLayer is an MCP gateway — it sits between your AI agents and X402 Buyer, and nothing reaches the server without passing your rules. These are the rules we recommend:

Block financial tools by default

{
  "x402_call": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Requires human approval."
      }
    ]
  }
}

Financial tools should be explicitly enabled per use case, not open by default.

Cap read operations

{
  "x402_balance": {
    "limits": [
      {
        "counter": "x402_balance_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register X402 Buyer — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON X402 BUYER →

Instant setup, no code required.

FULL CATALOGUE

All 4 X402 Buyer tools

FINANCIAL 1 tools

Financial x402_call Call any x402 paid API endpoint with automatic USDC payment via AgentCash. Accepts a full URL with query para

EXECUTE 1 tools

Execute x402_research Run comprehensive research by calling multiple x402 endpoints in parallel. Given a subject (domain, IP, addre

READ 2 tools

Read x402_balance Check your AgentCash USDC wallet balance on Base. Returns current balance available for x402 payments and app Read x402_discover Search for x402 paid API endpoints that can answer a question or provide data. Discovery powered by Decixa (5

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about X402 Buyer

Can an AI agent move money through the X402 Buyer MCP server? +

Yes. The X402 Buyer server exposes 1 financial tools including x402_call. Without a policy, an autonomous agent can call these with no spend caps, no rate limits, and no approval flow. PolicyLayer lets you block financial tools by default, require human approval, or set per-tool rate limits — enforced on every call.

How many tools does the X402 Buyer MCP server expose? +

4 tools across 3 categories: Execute, Read, Write. 2 are read-only. 2 can modify, create, or delete data.

How do I enforce a policy on X402 Buyer? +

Register the X402 Buyer MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every X402 Buyer tool call.

Deterministic rules across all 4 X402 Buyer tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON X402 BUYER →

Instant setup, no code required.

4 X402 Buyer tools catalogued and risk-classified — across an index of 46,500+ MCP servers.

// WHERE THIS COMES FROM

These policies come from X402 Buyer's registry record.

The record behind this page: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →