{
  "x402Version": 2,
  "id": 13534,
  "slug": "13534",
  "resource": "https://presign.hergertsynthora.com/service",
  "description": "Pre-sign security verdict for autonomous agents: before an agent SIGNS and settles a transaction, get an allow/warn/block verdict with reasons. Decodes the calldata to catch UNLIMITED approvals (spender can drain the token without further signatures), and cross-checks the token (honeypot, mintable, pausable, hidden owner, blacklist, buy/sell tax via GoPlus) and the spender/recipient (phishing, blacklist, sanctions via GoPlus address-security + Chainalysis + TRM). Use it as a last-mile guard before approving a token or signing a tx. Ed25519-signed provenance. 0.015 USDC on Base. POST {\"chain\":\"base\",\"to\":\"0x..\",\"data\":\"0x..\"} to verify a tx before signing, or {\"chain\":\"base\",\"token\":\"0x..\"} to verify a token before approving.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x6D9F318463168fF637b50E5b9a21392e97c7c167",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "15000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "chain": "base",
            "data": "0x095ea7b30000000000000000000000001111111111111111111111111111111111111111ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
            "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "niche": "presign",
            "ok": true,
            "result": {
              "chain": "base",
              "checked_token": "0x8335...",
              "intent": "approve(address,uint256)",
              "reasons": [
                "APPROVE ILIMITADO a 0x1111...: el spender podra vaciar el token sin mas firmas"
              ],
              "spender": "0x1111...",
              "spender_risk": {
                "address": "0x1111...",
                "chainalysis_sanctioned": false
              },
              "token_flags": {
                "is_honeypot": false,
                "trust_list": true
              },
              "verdict": "block"
            }
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "chain": {
                    "description": "Chain (default base)",
                    "enum": [
                      "base",
                      "ethereum"
                    ],
                    "type": "string"
                  },
                  "data": {
                    "description": "Raw calldata (0x...) of the tx to be signed — decoded to detect unlimited approvals and the spender/recipient",
                    "type": "string"
                  },
                  "to": {
                    "description": "Target contract of the tx to be signed (0x...); for approve/transfer this is the token being approved/moved",
                    "type": "string"
                  },
                  "token": {
                    "description": "Token contract to verify before approving (0x...); use instead of to/data when you only want a token check",
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "niche": {
                  "type": "string"
                },
                "ok": {
                  "type": "boolean"
                },
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "presign.hergertsynthora.com",
  "lastUpdated": "2026-09-12T17:21:43.738Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-12T17:21:43.251Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "presign.hergertsynthora.com",
    "manifest_name": "presign.hergertsynthora.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}