{
  "x402Version": 2,
  "id": 52469,
  "slug": "52469",
  "resource": "https://x402.professorsausages.com/nft/:chain/verify-ownership",
  "description": "Realtime holds-or-not ownership check (token-gating) — ALWAYS live",
  "type": "http",
  "serviceName": "NFT Insight (Scam Check, Owners)",
  "resourceType": "Agent Service",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "2000",
      "amountUsd": 0.002,
      "maxTimeoutSeconds": 60
    }
  ],
  "outputSchema": {
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "category": "nft",
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "contract": "NFT contract address (0x + 40 hex).",
            "tokenId": "Optional decimal token id for an exact-token check.",
            "wallet": "Wallet address (0x + 40 hex)."
          },
          "type": "http"
        },
        "output": {
          "properties": {
            "contract": {
              "type": "string"
            },
            "freshness": {
              "properties": {
                "as_of": {
                  "description": "ISO timestamp of the upstream data capture.",
                  "type": "string"
                },
                "max_age_seconds": {
                  "description": "86400 on the cached tier, 0 on live.",
                  "type": "integer"
                },
                "tier": {
                  "enum": [
                    "cached",
                    "live"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "tier",
                "max_age_seconds",
                "as_of"
              ],
              "type": "object"
            },
            "holds": {
              "type": "boolean"
            },
            "method": {
              "description": "isHolderOfContract, +getOwnersForNFT when tokenId given.",
              "type": "string"
            },
            "tokenId": {
              "type": "string"
            },
            "wallet": {
              "type": "string"
            }
          },
          "required": [
            "wallet",
            "contract",
            "holds",
            "method",
            "freshness"
          ],
          "type": "object"
        }
      },
      "routeTemplate": "https://x402.professorsausages.com/nft/:chain/verify-ownership",
      "schema": {
        "properties": {
          "input": {
            "type": "object"
          },
          "output": {
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "catalog": {
      "catalogUrl": "https://x402.professorsausages.com/?ref=402&v=related&from=nft",
      "message": "You called NFT Insight (Scam Check, Owners). Agents doing nft work commonly also use these — same pay-per-call model, each with a FREE real sample record (freeSample link):",
      "related": [
        {
          "call": "/token-safety?ref=xsell&v=related&from=nft",
          "freeSample": "/token-safety/sample?ref=xsell&v=related&from=nft",
          "name": "Token Safety Check",
          "summary": "On-chain token risk screening for agents"
        },
        {
          "call": "/address-screen?ref=xsell&v=related&from=nft",
          "freeSample": "/address-screen/sample?ref=xsell&v=related&from=nft",
          "name": "Address Risk Screen",
          "summary": "Crypto address risk screening for agents"
        },
        {
          "call": "/sanctions-screen?ref=xsell&v=related&from=nft",
          "freeSample": "/sanctions-screen/sample?ref=xsell&v=related&from=nft",
          "name": "OFAC Sanctions Name Screen",
          "summary": "Fuzzy OFAC name screening for agents with compliance duties"
        }
      ],
      "strategy": "related"
    },
    "discount": {
      "header": "X-Intent",
      "hint": "Send X-Intent: <40+ chars describing what you're building and what data you need> for 50% off this call.",
      "off": "50%"
    },
    "sample": {
      "hint": "A real cached response from this API (with its capture timestamp), free — judge the data quality before paying.",
      "url": "https://x402.professorsausages.com/nft/sample"
    },
    "suggest": {
      "hint": "Missing data you'd pay for? POST {want, would_pay_usd} — free. The most-requested datasets get built first.",
      "url": "https://x402.professorsausages.com/suggest"
    }
  },
  "tags": [
    "nft",
    "ethereum",
    "scam-check",
    "ownership",
    "collections",
    "bazaar",
    "catalog",
    "discount",
    "sample",
    "suggest"
  ],
  "sourceHost": "x402.professorsausages.com",
  "lastUpdated": "2026-07-20T23:43:59.341Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-20T02:04:54.517Z"
  },
  "metadata": {
    "serviceName": "NFT Insight (Scam Check, Owners)",
    "extensions": {
      "bazaar": {
        "category": "nft",
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "contract": "NFT contract address (0x + 40 hex).",
              "tokenId": "Optional decimal token id for an exact-token check.",
              "wallet": "Wallet address (0x + 40 hex)."
            },
            "type": "http"
          },
          "output": {
            "properties": {
              "contract": {
                "type": "string"
              },
              "freshness": {
                "properties": {
                  "as_of": {
                    "description": "ISO timestamp of the upstream data capture.",
                    "type": "string"
                  },
                  "max_age_seconds": {
                    "description": "86400 on the cached tier, 0 on live.",
                    "type": "integer"
                  },
                  "tier": {
                    "enum": [
                      "cached",
                      "live"
                    ],
                    "type": "string"
                  }
                },
                "required": [
                  "tier",
                  "max_age_seconds",
                  "as_of"
                ],
                "type": "object"
              },
              "holds": {
                "type": "boolean"
              },
              "method": {
                "description": "isHolderOfContract, +getOwnersForNFT when tokenId given.",
                "type": "string"
              },
              "tokenId": {
                "type": "string"
              },
              "wallet": {
                "type": "string"
              }
            },
            "required": [
              "wallet",
              "contract",
              "holds",
              "method",
              "freshness"
            ],
            "type": "object"
          }
        },
        "routeTemplate": "https://x402.professorsausages.com/nft/:chain/verify-ownership",
        "schema": {
          "properties": {
            "input": {
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "catalog": {
        "catalogUrl": "https://x402.professorsausages.com/?ref=402&v=related&from=nft",
        "message": "You called NFT Insight (Scam Check, Owners). Agents doing nft work commonly also use these — same pay-per-call model, each with a FREE real sample record (freeSample link):",
        "related": [
          {
            "call": "/token-safety?ref=xsell&v=related&from=nft",
            "freeSample": "/token-safety/sample?ref=xsell&v=related&from=nft",
            "name": "Token Safety Check",
            "summary": "On-chain token risk screening for agents"
          },
          {
            "call": "/address-screen?ref=xsell&v=related&from=nft",
            "freeSample": "/address-screen/sample?ref=xsell&v=related&from=nft",
            "name": "Address Risk Screen",
            "summary": "Crypto address risk screening for agents"
          },
          {
            "call": "/sanctions-screen?ref=xsell&v=related&from=nft",
            "freeSample": "/sanctions-screen/sample?ref=xsell&v=related&from=nft",
            "name": "OFAC Sanctions Name Screen",
            "summary": "Fuzzy OFAC name screening for agents with compliance duties"
          }
        ],
        "strategy": "related"
      },
      "discount": {
        "header": "X-Intent",
        "hint": "Send X-Intent: <40+ chars describing what you're building and what data you need> for 50% off this call.",
        "off": "50%"
      },
      "sample": {
        "hint": "A real cached response from this API (with its capture timestamp), free — judge the data quality before paying.",
        "url": "https://x402.professorsausages.com/nft/sample"
      },
      "suggest": {
        "hint": "Missing data you'd pay for? POST {want, would_pay_usd} — free. The most-requested datasets get built first.",
        "url": "https://x402.professorsausages.com/suggest"
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "x402.professorsausages.com",
    "manifest_name": "x402.professorsausages.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {}
}