FETCH402
← Protocol index

Resource / 159

healthy

JustaName ENS Reverse Resolver.

GET https://api.justaname.id/ens/v2/reverse ↗

Resolves an address into its ENS reverse record on a given chain, with batch support up to 50 addresses and per-address chain scoping via interop addresses.

Eligibility
probeable
Failures
0
Last quote
2026-08-12 22:00:01 UTC
Last probe
2026-08-12 22:00:01 UTC
Payment requirements / accepts[] 1 options
State Network Scheme Atomic amount Asset payTo / untrusted
active eip155:8453 exact 1000 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 0xc529edd6d47c60923902514c7c0b3993ae42c2ec

All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.

Probe evidence 1 recent
healthy 2026-08-12 22:00:01 UTC GET · HTTP 402 · 98ms · accepts 1 · base 1 ok
Request
GET https://api.justaname.id/ens/v2/reverse
Robots
error
Note
robots_error:{:robots_http_status, 404};http_402;accepts=1;base=1
Accepts fingerprint
4e7397e8fe5167ca41ac7745516f14735ad27eec30647b7e6bf02a2dc026911c

Accepts snapshot

[
  {
    "amount": "1000",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "assetTransferMethod": null,
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "maxTimeoutSeconds": 60,
    "network": "eip155:8453",
    "payTo": "0xc529edd6d47c60923902514c7c0b3993ae42c2ec",
    "paymentFlow": null,
    "raw": {
      "amount": "1000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 60,
      "max_timeout_seconds": 60,
      "network": "eip155:8453",
      "payTo": "0xc529edd6d47c60923902514c7c0b3993ae42c2ec",
      "pay_to": "0xc529edd6d47c60923902514c7c0b3993ae42c2ec",
      "scheme": "exact"
    },
    "scheme": "exact"
  }
]

PaymentRequired raw 

{
  "accepts": [
    {
      "amount": "1000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 60,
      "network": "eip155:8453",
      "payTo": "0xc529edd6d47c60923902514c7c0b3993ae42c2ec",
      "scheme": "exact"
    }
  ],
  "error": "PAYMENT-SIGNATURE header is required",
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
            "coinType": "60"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
            "name": "vitalik.eth",
            "viaUniversalResolver": true
          },
          "type": "json"
        }
      },
      "input": {
        "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
        "coinType": "60"
      },
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "address": {
            "type": "string"
          },
          "coinType": {
            "type": "string"
          }
        },
        "title": "Input",
        "type": "object"
      },
      "output": {
        "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
        "name": "vitalik.eth",
        "viaUniversalResolver": true
      },
      "outputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "address": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "viaUniversalResolver": {
            "type": "boolean"
          }
        },
        "title": "Output",
        "type": "object"
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {},
              "bodyType": {
                "type": "string"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE",
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object"
              },
              "type": {
                "const": "http"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "additionalProperties": false,
            "properties": {
              "example": {},
              "format": {
                "type": "string"
              },
              "type": {
                "enum": [
                  "json",
                  "text"
                ]
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "resource": {
    "description": "Resolves an address into its ENS reverse record on a given chain, with batch support up to 50 addresses and per-address chain scoping via interop addresses.",
    "mimeType": "application/json",
    "serviceName": "JustaName ENS Reverse Resolver",
    "tags": [
      "ens",
      "identity",
      "reverse-resolution",
      "primary-name"
    ],
    "url": "https://api.justaname.id/ens/v2/reverse"
  },
  "x402Version": 2
}

Response headers

{
  "access-control-expose-headers": "PAYMENT-REQUIRED,WWW-Authenticate,PAYMENT-RESPONSE,Payment-Receipt",
  "connection": "keep-alive",
  "content-length": "2",
  "content-type": "application/json; charset=utf-8",
  "date": "Wed, 12 Aug 2026 22:00:01 GMT",
  "etag": "W/\"2-vyGp6PvFo4RvsFtPoIWeCReyIC8\"",
  "payment-required": "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",
  "vary": "Origin",
  "www-authenticate": "Payment id=\"8b57b6dc-f330-4802-8864-96eda97ce450.1786572061.7spw5kbs4ouANj5IMCAM3CN0vx5H41e9YHWyHJ_ZoQ0\", realm=\"api.justaname.id\", method=\"evm\", intent=\"charge\", request=\"eyJhbW91bnQiOiIxMDAwIiwiYXNzZXQiOiIweDgzMzU4OWZDRDZlRGI2RTA4ZjRjN0MzMkQ0ZjcxYjU0YmRBMDI5MTMiLCJjcmVkZW50aWFsVHlwZXMiOlsiZWlwMzAwOSJdLCJjdXJyZW5jeSI6IjB4ODMzNTg5ZkNENmVEYjZFMDhmNGM3QzMyRDRmNzFiNTRiZEEwMjkxMyIsIm1ldGhvZERldGFpbHMiOnsiY2hhaW5JZCI6ODQ1MywiY3JlZGVudGlhbFR5cGVzIjpbImVpcDMwMDkiXX0sIm5ldHdvcmsiOiJlaXAxNTU6ODQ1MyIsInJlY2lwaWVudCI6IjB4QzUyOUVERDZENDdDNjA5MjM5MDI1MTRDN0MwQjM5OTNhZTQyQzJlYyJ9\", expires=\"2026-08-12T22:01:01Z\"",
  "x-powered-by": "Express"
}

Response body 

{}

Request headers

{
  "accept": "*/*",
  "user-agent": "Fetch402Bot/0.1 (+https://fetch402.com/crawler; contact: crawler@fetch402.com)"
}

Machine contract

Schemas.

InputJSON
{
  "method": "GET",
  "queryParams": {
    "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
    "coinType": "60"
  },
  "type": "http"
}
OutputJSON
{
  "example": {
    "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
    "name": "vitalik.eth",
    "viaUniversalResolver": true
  },
  "type": "json"
}