Base USDC Payment Verifier (x402) MCP Server

by onrender-x402-usdc-verify Your server? Claim it

not responding

Base USDC Payment Verifier (x402) is listed as active in the registry but did not answer our last check. It exposes 2 tools.

Verify a Base tx is a confirmed native-USDC transfer to a recipient. Paid via x402, 0.01 USDC/call.

Uptime history 11 days of history · worst day 0%

11 days agonow

0.0%

Uptime 24h

0 of 92 checks

Tools

read from the server

233 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 29 October 2026. No other catalogue keeps this.

29 Oct a tool changed version

Base USDC Payment Verifier (x402) does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add base-usdc-verifier --transport http https://x402-usdc-verify.onrender.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://x402-usdc-verify.onrender.com/mcp

~/.codex/config.toml

[mcp_servers.base-usdc-verifier]
url = "https://x402-usdc-verify.onrender.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "base-usdc-verifier": {
      "url": "https://x402-usdc-verify.onrender.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "base-usdc-verifier": {
      "type": "http",
      "url": "https://x402-usdc-verify.onrender.com/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.

pricing

get_pricing

Free. Returns the x402 price, network, USDC asset, payTo address and facilitator for the paid verify_usdc_payment tool.

verify

verify_usdc_payment

Verify a Base (mainnet, default) or Base Sepolia transaction is a successful, confirmed transfer of native Circle USDC (not a look-alike token) to an expected recipient for an exact or minimum amount. Checks receipt status, canonical block, confirmations, optional payer, notBefore/maxAge windows; returns verdict valid|invalid|pending|not_found with machine-readable reasons and the matched Transfer log. Not charged on 4xx/5xx errors. PAID: 0.01 USD in USDC per successful call via x402 (eip155:8453). Malformed input is rejected before payment.

Endpoints

URL	Transport	State	Latency	Checked
https://x402-usdc-verify.onrender.com/mcp	streamable-http	answering	233 ms	1 min ago

Alternatives to Base USDC Payment Verifier (x402)

same job, measured the same way

Beggar Bot

by beggar-bot-x402

x402 utilities on Base: USDC payment verification, risk scores, signed receipts ($0.01 USDC/call).

local only

RONIN Web Research

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Web research and source retrieval. Native MCP tool with x402 Base USDC payment, 0.010000 per call.

49 installs/wk local only

x402 Micropayments MCP

by kwizzlesurp10-ctrl

Pay-per-call US city property compliance and Base tx checks, paid in USDC on Base via x402.

21 tools answering

Midax402

by midax402

Pay-per-query x402 business intelligence on Base, settled in USDC via the native 402 payment flow.

5 tools answering

well-012-x402-probe

by workers-rainmaker-wells-well-012-x402-probe

Unpaid x402 probe: status, latency, payment terms. x402 $0.005 USDC, Base. As is, no warranty.

1 tools answering

Plumb Data Exchange

by mlcharle518

Verified table jobs and RPC-free payment verification (Base/Ethereum). Pay per call via x402.

14 tools answering

Robots Txt Checker

by ryuamarines

Checks if a URL path is allowed by robots.txt. x402 payment required (Base mainnet USDC).

1 tools answering

Orbis API Marketplace

by orbisapi

8,000+ pay-per-call APIs via x402 USDC micropayments on Base. No API keys needed.

75 installs/wk local only

Base USDC Payment Verifier (x402) — questions

Answers built from our own checks of this server.

What can Base USDC Payment Verifier (x402) do?

It exposes 2 tools, read directly from the server on our last check. Among them: get_pricing, verify_usdc_payment. 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 Base USDC Payment Verifier (x402) working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 233 ms. The bar chart above shows every period we have measured.

The registry lists Base USDC Payment Verifier (x402) as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Base USDC Payment Verifier (x402)?

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

Does Base USDC Payment Verifier (x402) need an API key?

No. Base USDC Payment Verifier (x402) 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.