Get fixed-rate exchanges

Discover the World of NFTs: Retrieving a List of Fixed-rate exchanges

Having gained knowledge about fetching lists of data NFTs and datatokens and extracting specific information about each, let's now explore the process of retrieving the information of fixed-rate exchanges. A fixed-rate exchange refers to a mechanism where data assets can be traded at a predetermined rate or price. These exchanges offer stability and predictability in data transactions, enabling users to securely and reliably exchange data assets based on fixed rates. If you need a refresher on fixed-rate exchanges, visit the asset pricing page.

PS: In this example, the query is executed on the Ocean subgraph deployed on the mainnet. If you want to change the network, please refer to this table.

Javascript

The javascript below can be used to run the query and fetch a list of fixed-rate exchanges. If you wish to change the network, replace the variable's value network as needed.

Python

The Python script below can be used to run the query and retrieve a list of fixed-rate exchanges. If you wish to change the network, then replace the value of the variable base_url as needed.

Create script

list_fixed_rate_exchanges.py

import requests
import json


query = """
{
  fixedRateExchanges(skip:0, first:2, subgraphError:deny){
    id
    contract
    exchangeId
    owner{id}
    datatoken{
      id
      name
      symbol
    }
    price
    datatokenBalance
    active
    totalSwapValue
    swaps(skip:0, first:1){
      tx
      by {
        id
      }
      baseTokenAmount
      dataTokenAmount
      createdTimestamp
    }
    updates(skip:0, first:1){
      oldPrice
      newPrice
      newActive
      createdTimestamp
      tx
    }
  }
}"""


base_url = "https://v4.subgraph.mainnet.oceanprotocol.com"
route = "/subgraphs/name/oceanprotocol/ocean-subgraph"

url = base_url + route

headers = {"Content-Type": "application/json"}
payload = json.dumps({"query": query})
response = requests.request("POST", url, headers=headers, data=payload)
result = json.loads(response.text)

print(json.dumps(result, indent=4, sort_keys=True))

Execute script

python list_fixed_rate_exchanges.py

Query

Copy the query to fetch a list of fixed-rate exchanges in the Ocean Subgraph GraphiQL interface.

{
  fixedRateExchanges(skip:0, first:2, subgraphError:deny){
    id
    contract
    exchangeId
    owner{id}
    datatoken{
      id
      name
      symbol
    }
    price
    datatokenBalance
    active
    totalSwapValue
    swaps(skip:0, first:1){
      tx
      by {
        id
      }
      baseTokenAmount
      dataTokenAmount
      createdTimestamp
    }
    updates(skip:0, first:1){
      oldPrice
      newPrice
      newActive
      createdTimestamp
      tx
    }
  }
}

Sample response

{
  "data": {
    "fixedRateExchanges": [
      {
        "active": true,
        "contract": "0xfa48673a7c36a2a768f89ac1ee8c355d5c367b02",
        "datatoken": {
          "id": "0x9b39a17cc72c8be4813d890172eff746470994ac",
          "name": "Delightful Pelican Token",
          "symbol": "DELPEL-79"
        },
        "datatokenBalance": "0",
        "exchangeId": "0x06284c39b48afe5f01a04d56f1aae45dbb29793b190ee11e93a4a77215383d44",
        "id": "0xfa48673a7c36a2a768f89ac1ee8c355d5c367b02-0x06284c39b48afe5f01a04d56f1aae45dbb29793b190ee11e93a4a77215383d44",
        "owner": {
          "id": "0x03ef3f422d429bcbd4ee5f77da2917a699f237ed"
        },
        "price": "33",
        "swaps": [
          {
            "baseTokenAmount": "33.033",
            "by": {
              "id": "0x9b39a17cc72c8be4813d890172eff746470994ac"
            },
            "createdTimestamp": 1656563684,
            "dataTokenAmount": "1",
            "tx": "0x0b55482f69169c103563062e109f9d71afa01d18f201c425b24b1c74d3c282a3"
          }
        ],
        "totalSwapValue": "0",
        "updates": []
      },
      {
        "active": true,
        "contract": "0xfa48673a7c36a2a768f89ac1ee8c355d5c367b02",
        "datatoken": {
          "id": "0x2cf074e36a802241f2f8ddb35f4a4557b8f1179b",
          "name": "Arcadian Eel Token",
          "symbol": "ARCEEL-17"
        },
        "datatokenBalance": "0",
        "exchangeId": "0x2719862ebc4ed253f09088c878e00ef8ee2a792e1c5c765fac35dc18d7ef4deb",
        "id": "0xfa48673a7c36a2a768f89ac1ee8c355d5c367b02-0x2719862ebc4ed253f09088c878e00ef8ee2a792e1c5c765fac35dc18d7ef4deb",
        "owner": {
          "id": "0x87b5606fba13529e1812319d25c6c2cd5c3f3cbc"
        },
        "price": "35",
        "swaps": [],
        "totalSwapValue": "0",
        "updates": []
      }
    ]
  }
}