Get Fee Recommendations

Through this endpoint customers can obtain fee recommendations. Our fees recommendations are based on Mempool data which makes them much more accurate than fees based on already mined blocks. Calculations are done in real time live. Using this endpoint customers can get gas price for Ethereum, fee per byte for Bitcoin, etc.

Single Result - This endpoint returns only one single result. GET /blockchain-data/{blockchain}/{network}/mempool/fees

Path Parameters

Required
blockchain string

Represents the specific blockchain protocol name, e.g. Ethereum, Bitcoin, etc.

Example : bitcoin

Possible Values : bitcoin ethereum ethereum-classic bitcoin-cash dogecoin dash litecoin binance-smart-chain zcash xrp
Required
network string

Represents the name of the blockchain network used; blockchain networks are usually identical as technology and software, but they differ in data, e.g. - "mainnet" is the live network with actual data while networks like "testnet", "goerli" are test networks.

Example : testnet

Possible Values : mainnet testnet mordor sepolia

Query parameters

Optional
context string

In batch situations the user can use the context to correlate responses with requests. This property is present regardless of whether the response was successful or returned as an error. context is specified by the user.

Example : yourExampleString

Response schema

200 400 401 402 403 404 409 415 422 429 500

HTTP Status Code: 200
Content-Type: application/json

The request has been successful.

Object :
Required
apiVersion string

Specifies the version of the API that incorporates this endpoint.

Example : 2023-04-25
Required
requestId string

Defines the ID of the request. The requestId is generated by Crypto APIs and it's unique for every request.

Example : 601c1710034ed6d407996b30
Optional
context string

In batch situations the user can use the context to correlate responses with requests. This property is present regardless of whether the response was successful or returned as an error. context is specified by the user.

Example : yourExampleString
Required
data
object
- Required
  item object
  
  Required
  unit string
  
  Currency unit
  
  Example : BTC
  
  Required
  fast string
  
  Fast fee per byte calculated from unconfirmed transactions
  
  Example : 0.000025
  
  Required
  slow string
  
  Slow fee per byte calculated from unconfirmed transactions
  
  Example : 0.000010
  
  Required
  standard string
  
  Standard fee per byte calculated from unconfirmed transactions
  
  Example : 0.000015
  
  Required
  feeCushionMultiplier string
  
  Fee cushion multiplier used to multiply the base fee
  
  Example : 1.2

Credits Cost : 500 Credits For 1 Result(s)

Try it out

Request Example

Http Java C# PHP Python Ruby Node.js Go

GET

https://rest.cryptoapis.io/blockchain-data/bitcoin/testnet/mempool/fees?context=yourExampleString

Headers

Content-Type: application/json

X-API-Key: my-api-key

OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder()
  .url("https://rest.cryptoapis.io/blockchain-data/bitcoin/testnet/mempool/fees?context=yourExampleString")
  .get()
  .addHeader("Content-Type", "application/json")
  .addHeader("X-API-Key", "my-api-key")
  .build();

Response response = client.newCall(request).execute();

var client = new RestClient("https://rest.cryptoapis.io/blockchain-data/bitcoin/testnet/mempool/fees?context=yourExampleString");
var request = new RestRequest(Method.GET);
request.AddHeader("X-API-Key", "my-api-key");
IRestResponse response = client.Execute(request);

$request = new HttpRequest();
$request->setUrl('https://rest.cryptoapis.io/blockchain-data/bitcoin/testnet/mempool/fees?context=yourExampleString');
$request->setMethod(HTTP_METH_GET);

$request->setHeaders(array(
    'Content-Type' => 'application/json',
    'X-API-Key' => 'my-api-key'
));

try {
    $response = $request->send();

    echo $response->getBody();
} catch (HttpException $ex) {
    echo $ex;
}

import http.client

conn = http.client.HTTPConnection("https://rest.cryptoapis.io")
querystring = {"context":"yourExampleString"}
headers = {
  'Content-Type': "application/json",
  'X-API-Key': "my-api-key"
}

conn.request("GET", "blockchain-data,bitcoin,testnet,mempool,fees", headers=headers  , params=querystring )

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))
}

require 'uri'
require 'net/http'

url = URI("https://rest.cryptoapis.io/blockchain-data/bitcoin/testnet/mempool/fees?context=yourExampleString")

http = Net::HTTP.new(url.host, url.port)

request = Net::HTTP::Get.new(url)
request["Content-Type"] = 'application/json'
request["X-API-Key"] = 'my-api-key'

response = http.request(request)
puts response.read_body

var https = require("https");

var options = {
  "method": "GET",
  "hostname": "rest.cryptoapis.io",
  "path": "/v2/blockchain-data/bitcoin/testnet/mempool/fees",
  "qs": {"context":"yourExampleString"},
  "headers": {
    "Content-Type": "application/json",
    "X-API-Key": "my-api-key"
  }
};

var req = https.request(options, function (res) {
  var chunks = [];

  res.on("data", function (chunk) {
    chunks.push(chunk);
  });

  res.on("end", function () {
    var body = Buffer.concat(chunks);
    console.log(body.toString());
  });
});

req.end();

package main

import (
  "fmt"
  "net/http"
  "io/ioutil"
)

func main() {

  url := "https://rest.cryptoapis.io/blockchain-data/bitcoin/testnet/mempool/fees?context=yourExampleString"

  req, _ := http.NewRequest("GET", url, nil)

  req.Header.Add("Content-Type", "application/json")
  req.Header.Add("X-API-Key", "my-api-key")

  res, _ := http.DefaultClient.Do(req)

  defer res.Body.Close()
  body, _ := ioutil.ReadAll(res.Body)

  fmt.Println(res)
  fmt.Println(string(body))

}

200 400 401 402 403 404 409 415 422 429 500

Response Example

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "unit": "BTC",
            "fast": "0.000025",
            "slow": "0.000010",
            "standard": "0.000015",
            "feeCushionMultiplier": "1.2"
        }
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "uri_not_found",
        "message": "The specified URI has not been found. Check the URI and try again.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "limit_greater_than_allowed",
        "message": "You have reached the allowed limit. The maximum number of items for this endpoint is {limit}, please use the specific pagination attributes to get the items in portions.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "invalid_pagination",
        "message": "The pagination attributes that have been used are invalid. Please check the Documentation to see details on pagination.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "missing_api_key",
        "message": "The specific authorization header (API Key) is missing, please check our Authorization section in our Documentation.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "invalid_api_key",
        "message": "The provided API key is invalid. Please, generate a new one from your Dashboard.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "insufficient_credits",
        "message": "You have insufficient credits. Please upgrade your plan from your Dashboard or contact our team via email.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "banned_ip_address",
        "message": "This IP address has been banned. To check the reason for that, please contact our team via email.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "endpoint_not_allowed_for_plan",
        "message": "This endpoint is not available for your current subscription plan, please upgrade your plan to be able to use it.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "endpoint_not_allowed_for_api_key",
        "message": "This endpoint is not available for your API key.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "feature_mainnets_not_allowed_for_plan",
        "message": "Mainnets access is not available for your current subscription plan, please upgrade your plan to be able to use it.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "resource_not_found",
        "message": "Resource not found",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "invalid_data",
        "message": "The data provided seems to be invalid.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "unsupported_media_type",
        "message": "The selected Media Type is unavailable. The Content-Type header should be 'application/json'.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "invalid_request_body_structure",
        "message": "Your request body for POST requests must have a structure of { data: { item: [...properties] } }",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "request_limit_reached",
        "message": "The request limit has been reached. There can be maximum {requests} requests per {seconds} second(s) made. Please contact our team via email if you need more or upgrade your plan.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2023-04-25",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "error": {
        "code": "unexpected_server_error",
        "message": "An unexpected server error has occurred, we are working to fix this. Please try again later and in case it occurs again please report it to our team via email.",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

Key	Value

Get Fee Recommendations

Path Parameters

Query parameters

Response schema

Object :

Object :

Object :

Object :

Object :

Object :

Object :

Object :

Object :

Object :

Object :

Credits Cost : 500 Credits For 1 Result(s)

Request Example

Response Example

Try It Out API Endpoint