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SPORE x402 Attestation

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

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

Connect Remote server

Terminal
claude mcp add --transport http x402-attestation 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"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://spore-x402.worker.beacon.host/mcp

Tools 6 found in our last check

  • 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 the URL you actually called, manifest con…

Details

Endpointhttps://spore-x402.worker.beacon.host/mcp (Streamable HTTP)
First published21 Oct 2026
Last updated21 Oct 2026
Registry namehost.beacon.worker.spore-x402/x402-attestation

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