Celo x402 Facilitator MCP Server

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answering

Celo x402 Facilitator is answering right now. Last checked 6 min ago. It exposes 5 tools.

Check supported assets and verify x402 payments on Celo

Uptime history 5 days of history

5 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

368 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Celo x402 Facilitator 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 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402-facilitator --transport http https://api.x402.celo.org/mcp

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

https://api.x402.celo.org/mcp

~/.codex/config.toml

[mcp_servers.x402-facilitator]
url = "https://api.x402.celo.org/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "x402-facilitator": {
      "url": "https://api.x402.celo.org/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "x402-facilitator": {
      "type": "http",
      "url": "https://api.x402.celo.org/mcp"
    }
  }
}

Available tools 5

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

config

get_config

Every settleable asset with its address, decimals, transfer method and EIP-712 domain values, plus the pricing model (gas at cost, plus a fee in basis points on the payment value when the asset has a USD price), the gas fallback and the free-credit allowances. Same answer as GET /api/config.

health

get_health

Whether the facilitator behind this host is answering. Same answer as GET /health.

payment

payment_status

Whether a signed payment authorization has been used on chain, for a client whose settle reply was lost. Answers unspent, consumed or expired from the chain (EIP-3009 authorizationState, or the Permit2 nonce bitmap). unspent is not final: the authorization can still be used until validBefore, and a settlement already in flight reads as unspent here. Only consumed and expired are final; expired is only reported 5 s after validBefore, so a payment still in flight is not called final. The settled and pending states need the owning API key and are only served over HTTP. Same answer as GET /settle/status, and it spends the same per-IP allowance.

supported

get_supported

The (x402Version, scheme, network) kinds and extensions this facilitator verifies and settles. Same answer as GET /supported.

verify

verify_payment

Check a signed x402 payment against its requirements: signature, amount, balance and simulation. Moves no funds. Same answer as POST /verify, and it spends the same per-IP allowance.

Endpoints

URL	Transport	State	Latency	Checked
https://api.x402.celo.org/mcp	streamable-http	answering	361 ms	6 min ago

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Celo x402 Facilitator — questions

Answers built from our own checks of this server.

What can Celo x402 Facilitator do?

It exposes 5 tools, read directly from the server on our last check. Among them: get_config, get_health, get_supported, payment_status, verify_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 Celo x402 Facilitator working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 368 ms. The bar chart above shows every period we have measured.

How do I connect Celo x402 Facilitator?

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 Celo x402 Facilitator need an API key?

No. Celo x402 Facilitator completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Celo x402 Facilitator?

It answers our handshake in 368 ms on average, which is faster than 35% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.