Server definition

Hash: sha256:e916c900ab87af7b0e746110f324c561d6e083343886d7a54dcc259f31deee98
What it is: What a remote MCP server returned when asked what it offers: 1 tools

The blob, as servednamed by its sha256

{
  "instructions": "Before signing or sending anything from a wallet, call check_signature with the transaction (tx), the EIP-712 typed_data, an EIP-7702 authorization, or the x402 payment_required (+ payment_payload). Do not sign on DANGER; ask a human on CAUTION.",
  "tools": [
    {
      "description": "Call BEFORE your agent signs or sends anything from a wallet. Decodes a transaction, an EIP-712 typed-data request (Permit, Permit2, EIP-3009 USDC authorizations, Seaport orders), an EIP-7702 delegation or an x402 payment (402 terms + payload) into plain English and returns SAFE / CAUTION / DANGER with risk flags (unlimited approvals, setApprovalForAll, fake USDC domains, x402 overpay or wrong payTo, OFAC SDN counterparties). Free preview tier (offline). The paid x402 endpoint /v1/check adds reasons, on-chain facts (spender is a wallet or contract, token metadata) and an eth_call simulation.",
      "inputSchema": {
        "properties": {
          "authorization": {
            "description": "EIP-7702 authorization {address (delegate contract), chainId, nonce}",
            "type": "object"
          },
          "chain": {
            "description": "base (default), ethereum, base-sepolia or a chain id",
            "type": "string"
          },
          "payment_payload": {
            "description": "x402 payment you are about to send: PAYMENT-SIGNATURE / X-PAYMENT (base64) or JSON",
            "type": [
              "object",
              "string"
            ]
          },
          "payment_required": {
            "description": "x402 402 terms: the PAYMENT-REQUIRED header (base64) or JSON {accepts:[…]}",
            "type": [
              "object",
              "string"
            ]
          },
          "tx": {
            "description": "Transaction to send: {\"to\":\"0x…\",\"data\":\"0x…\",\"value\":\"0\",\"from\":\"0x…\"} (from enables simulation)",
            "type": "object"
          },
          "typed_data": {
            "description": "EIP-712 request {domain, types, primaryType, message} as passed to eth_signTypedData_v4",
            "type": "object"
          }
        },
        "type": "object"
      },
      "name": "check_signature",
      "outputSchema": null
    }
  ]
}

Verify it yourself

curl -s https://api.teppi.xyz/v1/evidence/sha256:e916c900ab87af7b0e746110f324c561d6e083343886d7a54dcc259f31deee98 | sha256sum