{
  "x402Version": 2,
  "id": 14970,
  "slug": "14970",
  "resource": "https://gaming.halowerk.com/v1/nft-metadata-mutate",
  "description": "Applies ordered set/remove attribute and set name/description operations to caller-supplied metadata, then hashes canonical output. It does not mint, sign, upload, mutate an on-chain token, preserve media, or verify ownership.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "asset_id": "sword-0042",
            "metadata": {
              "attributes": [
                {
                  "key": "level",
                  "value": 3
                },
                {
                  "key": "element",
                  "value": "water"
                }
              ],
              "description": "A weathered steel blade.",
              "name": "Harbor Blade"
            },
            "operations": [
              {
                "key": "level",
                "op": "set_attribute",
                "value": 4
              },
              {
                "key": "element",
                "op": "remove_attribute"
              },
              {
                "op": "set_description",
                "value": "A reforged weathered steel blade."
              }
            ]
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "additionalProperties": false,
                "properties": {
                  "asset_id": {
                    "maxLength": 256,
                    "minLength": 1,
                    "type": "string"
                  },
                  "metadata": {
                    "additionalProperties": false,
                    "properties": {
                      "attributes": {
                        "items": {
                          "additionalProperties": false,
                          "properties": {
                            "key": {
                              "maxLength": 128,
                              "minLength": 1,
                              "type": "string"
                            },
                            "value": {
                              "type": [
                                "string",
                                "number",
                                "boolean",
                                "null"
                              ]
                            }
                          },
                          "required": [
                            "key",
                            "value"
                          ],
                          "type": "object"
                        },
                        "maxItems": 1000,
                        "type": "array"
                      },
                      "description": {
                        "maxLength": 4096,
                        "minLength": 0,
                        "type": "string"
                      },
                      "name": {
                        "maxLength": 256,
                        "minLength": 1,
                        "type": "string"
                      }
                    },
                    "required": [
                      "name",
                      "description",
                      "attributes"
                    ],
                    "type": "object"
                  },
                  "operations": {
                    "items": {
                      "additionalProperties": false,
                      "properties": {
                        "key": {
                          "maxLength": 128,
                          "minLength": 1,
                          "type": "string"
                        },
                        "op": {
                          "enum": [
                            "set_attribute",
                            "remove_attribute",
                            "set_name",
                            "set_description"
                          ],
                          "type": "string"
                        },
                        "value": {
                          "type": [
                            "string",
                            "number",
                            "boolean",
                            "null"
                          ]
                        }
                      },
                      "required": [
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                      ],
                      "type": "object"
                    },
                    "maxItems": 1000,
                    "minItems": 1,
                    "type": "array"
                  }
                },
                "required": [
                  "asset_id",
                  "metadata",
                  "operations"
                ],
                "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"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "gaming.halowerk.com",
  "lastUpdated": "2026-09-01T07:49:26.075Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-01T07:49:25.865Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "gaming.halowerk.com",
    "manifest_name": "gaming.halowerk.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"
  }
}