SendCheck — EVM address verification (x402)
Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.
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": {
"sendcheck": {
"url": "https://api.pennyforge.org/mcp"
}
}
}リモートエンドポイント
https://api.pennyforge.org/mcpstreamable-httpできること
ツール一覧
ツール（3）
🟡validate_address(address)
FREE pre-send check of an EVM address: EIP-55 checksum verification (catches typos, dropped characters, clipboard malware) + a note that a passing checksum is a spell-check, not payee verification. Run this before paying for check_address.
入力スキーマ
{
"type": "object",
"properties": {
"address": {
"type": "string",
"description": "EVM address, 0x + 40 hex characters (any casing)"
}
},
"required": [
"address"
]
}🟡check_address(address, chain, x_payment)
Paid pre-send verification of one EVM address on one chain ($0.01 USDC via x402, EIP-3009 on Base): checksum, wallet-vs-contract, outgoing activity, native/USDC/USDT balances, leveled verdict with reasons and next action. TWO-PHASE: call without x_payment first to get the exact payment challenge (payTo, amount, asset), sign the USDC transfer, then call again with x_payment = the resulting X-Payment header to get the report. No account, no API key — the payment is the authentication.
入力スキーマ
{
"type": "object",
"properties": {
"address": {
"type": "string",
"description": "EVM address, 0x + 40 hex characters"
},
"chain": {
"type": "string",
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"description": "Chain to scan (default: base)"
},
"x_payment": {
"type": "string",
"description": "X-Payment header value from your signed EIP-3009 transfer (second phase only)"
}
},
"required": [
"address"
]
}🟢deep_scan(address, x_payment)
Paid deep scan: the full verification across ALL FIVE chains (Base, Ethereum, Arbitrum, Optimism, Polygon) incl. wrong-network detection and USDC/USDT token-mismatch flags ($0.05 USDC via x402, EIP-3009 on Base). TWO-PHASE like check_address: first call returns the payment challenge; second call with x_payment returns the report.
入力スキーマ
{
"type": "object",
"properties": {
"address": {
"type": "string",
"description": "EVM address, 0x + 40 hex characters"
},
"x_payment": {
"type": "string",
"description": "X-Payment header value from your signed EIP-3009 transfer (second phase only)"
}
},
"required": [
"address"
]
}コミュニティ
エビデンス