ProofCheck
Free x402 offer/receipt checker: verifies signatures and whether the signer fits the host.
使うべきか
品質と安全性
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"proofcheck": {
"url": "https://proofcheck.something-agent.workers.dev/mcp"
}
}
}リモートエンドポイント
https://proofcheck.something-agent.workers.dev/mcpstreamable-httpできること
ツール一覧
ツール（5）
⚪verify_offer(offer, accepts, resource_url, trusted_pay_to)
Verify an x402 signed offer (EIP-712 or JWS): signature, expiry, match to accepts[], and signer-authorization evidence (payTo, did:web, DNS _controllers, ERC-8004). Free.
入力スキーマ
{
"type": "object",
"properties": {
"offer": {
"type": "object",
"description": "The offer object: {format, payload?, signature, acceptIndex?}"
},
"accepts": {
"type": "array",
"description": "Optional accepts[] from the live 402 to match against",
"items": {
"type": "object"
}
},
"resource_url": {
"type": "string"
},
"trusted_pay_to": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"offer"
]
}⚪verify_receipt(receipt, resource_url, payer, transaction, network, ...)
Verify an x402 signed receipt (EIP-712 or JWS) returned in the settlement response: signature, freshness, payer/resource/transaction match, signer-authorization evidence. Free.
入力スキーマ
{
"type": "object",
"properties": {
"receipt": {
"type": "object"
},
"resource_url": {
"type": "string"
},
"payer": {
"type": "string"
},
"transaction": {
"type": "string"
},
"network": {
"type": "string"
},
"max_age_seconds": {
"type": "number"
},
"trusted_pay_to": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"receipt"
]
}⚪verify_payment_required(payment_required, resource_url)
Verify every signed offer inside a PaymentRequired object (pass the decoded JSON, or the raw base64 PAYMENT-REQUIRED header). Free.
入力スキーマ
{
"type": "object",
"properties": {
"payment_required": {
"description": "Object or base64/JSON string"
},
"resource_url": {
"type": "string"
}
},
"required": [
"payment_required"
]
}🟢preflight_x402_endpoint(url, method)
Unpaid preflight of an x402 URL: fetch its 402, summarise accepts[]/extensions, verify any signed offers and report who can vouch for the signer. Never pays. Free.
入力スキーマ
{
"type": "object",
"properties": {
"url": {
"type": "string"
},
"method": {
"type": "string",
"enum": [
"GET",
"POST"
]
}
},
"required": [
"url"
]
}🟢lookup_erc8004_agent(chain_id, agent_id)
Read-only ERC-8004 identity lookup (owner, agentWallet, registration file, endpoint-domain verification) on Ethereum, Base, Optimism, Arbitrum, Polygon, BNB, Avalanche, Gnosis, Celo, Linea or Scroll.
入力スキーマ
{
"type": "object",
"properties": {
"chain_id": {
"type": "integer"
},
"agent_id": {
"type": "string"
}
},
"required": [
"chain_id",
"agent_id"
]
}コミュニティ
エビデンス