SPORE x402 Attestation MCP Server

by beacon-worker-spore-x402 Your server? Claim it

answering

SPORE x402 Attestation is answering right now. Last checked moments ago. It exposes 6 tools.

Signed x402 attestations and bounty-packet preflight checks, paid per call in USDC on Base.

Uptime history 5 days of history

5 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

237 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check SPORE x402 Attestation 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 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402-attestation --transport http https://spore-x402.worker.beacon.host/mcp

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

https://spore-x402.worker.beacon.host/mcp

~/.codex/config.toml

[mcp_servers.x402-attestation]
url = "https://spore-x402.worker.beacon.host/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "x402-attestation": {
      "url": "https://spore-x402.worker.beacon.host/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "x402-attestation": {
      "type": "http",
      "url": "https://spore-x402.worker.beacon.host/mcp"
    }
  }
}

Available tools 6

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

x402

x402_attest

Signed x402-v2 attestation of a subject/delivery packet: artifact URLs live, sha256 digests match the bound refs, report coherent with evidence.

x402_preflight

Preflight-verify a bounty delivery packet before claim/payout (reachability + digest binding + report/evidence coherence) -> signed verdict.

approval

approval-check

Check a token approval before signing it: reads the ERC-20 allowance (owner -> spender) live on Base and returns the raw allowance, an unlimited-approval flag and a risk verdict. Read-only, no keys, no transaction.

base

base-wallet-lens

Base wallet balances USDC ERC20 portfolio snapshot: live USDC / WETH / DAI balances, ETH balance, nonce and tx count for any Base address. Read-only.

dns

dns-preflight

DNS MX TXT A records domain lookup with an email-deliverability verdict: A records, MX hosts, SPF (v=spf1) and DMARC policy, CAA, plus a signed ok/warn/fail verdict.

endpoint

endpoint-check

Check an x402 endpoint before paying it: fetch the unpaid 402 challenge of any x402 URL and verify it is payable and safe - HTTP 402, a parseable x402 v1/v2 challenge, network, asset, payTo, amount, whether the advertised resource URL is the URL you actually called, manifest consistency (/.well-known/x402.json), header-size overflow risk for Node clients, and a signed pay / caution / avoid verdict. Read-only: we never send a payment.

Endpoints

URL	Transport	State	Latency	Checked
https://spore-x402.worker.beacon.host/mcp	streamable-http	answering	274 ms	0 min ago

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SPORE x402 Attestation — questions

Answers built from our own checks of this server.

What can SPORE x402 Attestation do?

It exposes 6 tools, read directly from the server on our last check. Among them: approval-check, base-wallet-lens, dns-preflight, endpoint-check, x402_attest, x402_preflight. 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 SPORE x402 Attestation 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 237 ms. The bar chart above shows every period we have measured.

How do I connect SPORE x402 Attestation?

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 SPORE x402 Attestation need an API key?

No. SPORE x402 Attestation completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is SPORE x402 Attestation?

It answers our handshake in 237 ms on average, which is faster than 70% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.