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.

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
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", "ropsten", "rinkeby" are test networks.

Example : testnet

Possible Values : mainnet testnet rinkeby ropsten mordor

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 : 2.0
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 : You can add any text here
Required
data
object
- Required
  item object
  
  Required
  unit string
  
  Defines the unit of the fee, e.g. BTC.
  
  Example : BTC
  
  Required
  fast string
  
  Defines the fee priority as "FAST". It works per byte, for UTXO-based protocols like Bitcoin, or per gas price, for account-based protocols like Ethereum. These are calculated based on Mempool.
  
  Example : 0.00000476
  
  Required
  slow string
  
  Defines the fee priority as "SLOW". It works per byte, for UTXO-based protocols like Bitcoin, or per gas price, for account-based protocols like Ethereum. These are calculated based on Mempool.
  
  Example : 0.00000049
  
  Required
  standard string
  
  Defines the fee priority as "STANDARD". It works per byte, for UTXO-based protocols like Bitcoin, or per gas price, for account-based protocols like Ethereum. These are calculated based on Mempool.
  
  Example : 0.00000178

Try it out

Request Example

Http Java C# PHP Python Ruby Node.js Go

GET

https://rest.cryptoapis.io/v2/blockchain-data/bitcoin/testnet/mempool/fees

Headers

Host: https://rest.cryptoapis.io/v2

Content-Type: application/json

X-API-Key: my-api-key

OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder()
  .url("https://rest.cryptoapis.io/v2/blockchain-data/bitcoin/testnet/mempool/fees")
  .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/v2/blockchain-data/bitcoin/testnet/mempool/fees");
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/v2/blockchain-data/bitcoin/testnet/mempool/fees');
$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/v2")
headers = {
  'Content-Type': "application/json",
  'X-API-Key': "my-api-key"
}

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

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

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

require 'uri'
require 'net/http'

url = URI("https://rest.cryptoapis.io/v2/blockchain-data/bitcoin/testnet/mempool/fees")

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": [],
  "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/v2/blockchain-data/bitcoin/testnet/mempool/fees"

  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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "data": {
        "item": {
            "unit": "BTC",
            "fast": "0.00000476",
            "slow": "0.00000049",
            "standard": "0.00000178"
        }
    }
}

{
    "apiVersion": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "error": {
        "code": "resource_not_found",
        "message": "Resource not found",
        "details": [
            {
                "attribute": "attribute which content caused the error",
                "message": "message describing the error"
            }
        ]
    }
}

{
    "apiVersion": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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": "2.0",
    "requestId": "601c1710034ed6d407996b30",
    "context": "You can add any text here",
    "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

Response schema

Object :

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Request Example

Response Example

Try It Out API Endpoint