SPORE x402 Attestation

MCP server · hosted · v2.1.0 · host.beacon.worker.spore-x402/x402-attestation

Online · tested 2h agoNEW · 3h agoSeen in the registry 2h ago

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

What it does

SPORE x402 Attestation is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.

At a glance

Hosted (remote)YES

Local installNO

Live checkOnline · 6 tools

Version2.1.0

PriceNot in the registry

First seen21 Oct 2026

Last checked2h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 2h ago (live check)

Hosted endpoint

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

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

MCP settings (Claude Desktop, Cursor and other MCP clients)

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

Live check

Electra Index connected to the hosted endpoint 2h ago

ONLINE SPORE x402 Attestation answered an MCP connection on 21 Oct 2026 and introduced itself as SPORE x402 Attestation 2.1.0 (MCP protocol 2025-06-18).

6 tools offered to AI assistants

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-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.
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.
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.
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 th

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Facts & evidence

Each fact shows where it was seen and when.

Fact	Value	Evidence	Source	Last confirmed
Hosted endpoint	https://spore-x402.worker.beacon.host/mcp	DECLARED	SRC-001 Official MCP Registry	2h ago
Local install (package)	no	DECLARED	SRC-001 Official MCP Registry	2h ago
Remote access (hosted)	yes	DECLARED	SRC-001 Official MCP Registry	2h ago
Website	https://spore-x402.worker.beacon.host/.well-known/mcp.json?ref=spore	DECLARED	SRC-001 Official MCP Registry	2h ago
Registry status	active	DECLARED	SRC-001 Official MCP Registry	2h ago
Version	2.1.0	DECLARED	SRC-001 Official MCP Registry	2h ago
MCP server	yes	DECLARED	SRC-001 Official MCP Registry	2h ago

Change history

NEW21 Oct 2026
first seen in the index

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Questions about SPORE x402 Attestation

How do I connect SPORE x402 Attestation?

Use the hosted endpoint https://spore-x402.worker.beacon.host/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does SPORE x402 Attestation offer?

When Electra Index connected on 21 Oct 2026, it listed 6 tools: x402_attest, x402_preflight, approval-check, dns-preflight, base-wallet-lens, endpoint-check. The full list is in "Live check" above.

Is SPORE x402 Attestation online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 2h ago.