MCP server

SPORE x402 Attestation

host.beacon.worker.spore-x402/x402-attestation

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

beacon.host (verified by the MCP Registry)

Status

Working at last check

Tools

6

Token cost

About 711 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

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

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add x402-attestation https://spore-x402.worker.beacon.host/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"x402-attestation","server_url":"https://spore-x402.worker.beacon.host/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"x402-attestation","server_url":"https://spore-x402.worker.beacon.host/mcp"}

Tools

• approval-check ~171 tokens
  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-wallet-lens ~99 tokens
  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-preflight ~102 tokens
  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-check Moves money · ~178 tokens
  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-know
• x402_attest ~81 tokens
  Signed x402-v2 attestation of a subject/delivery packet: artifact URLs live, sha256 digests match the bound refs, report coherent with evidence.
• x402_preflight ~80 tokens
  Preflight-verify a bounty delivery packet before claim/payout (reachability + digest binding + report/evidence coherence) -> signed verdict.

Browse

• Domains and DNS
• Email
• Payments

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