x402 MCP Starter MCP Server

by kadopi Your server? Claim it

answering

x402 MCP Starter is answering right now. Last checked 2 min ago. It exposes 2 tools. Last commit 16 Sep 2026.

Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint.

Uptime history 13 days of history

13 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

205 ms

Response time

average over 24h

Stars

last commit 16 Sep 2026

Nothing serious here today

Today is the operative word: we check x402 MCP Starter every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402-mcp-starter --transport http https://x402-mcp-starter.kadopi.workers.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "x402-mcp-starter": {
      "url": "https://x402-mcp-starter.kadopi.workers.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.x402-mcp-starter]
url = "https://x402-mcp-starter.kadopi.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "x402-mcp-starter": {
      "url": "https://x402-mcp-starter.kadopi.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "x402-mcp-starter": {
      "url": "https://x402-mcp-starter.kadopi.workers.dev/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

paid

get_paid_sample

Fixed-price reference path: confirms that an x402-aware MCP client can pay and receive a receipt.

validate

validate_x402_config

Free: checks Base USDC, price, amount, recipient, and facilitator settings before you deploy an x402-paid MCP tool.

Endpoints

URL	Transport	State	Latency	Checked
https://x402-mcp-starter.kadopi.workers.dev/mcp	streamable-http	answering	155 ms	2 min ago

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x402 MCP Starter — questions

Answers built from our own checks of this server.

What can x402 MCP Starter do?

It exposes 2 tools, read directly from the server on our last check. Among them: get_paid_sample, validate_x402_config. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is x402 MCP Starter working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 205 ms. The bar chart above shows every period we have measured.

How do I connect x402 MCP Starter?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does x402 MCP Starter need an API key?

No. x402 MCP Starter completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is x402 MCP Starter?

It answers our handshake in 205 ms on average, which is faster than 65% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is x402 MCP Starter open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.