Ethereum JSON-RPC endpoint

curl --request POST \
  --url https://api.blockscout.com/{chain_id}/json-rpc \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
'

import requests

url = "https://api.blockscout.com/{chain_id}/json-rpc"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": [],
    "id": 1
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({jsonrpc: '2.0', method: 'eth_blockNumber', params: [], id: 1})
};

fetch('https://api.blockscout.com/{chain_id}/json-rpc', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.blockscout.com/{chain_id}/json-rpc",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'jsonrpc' => '2.0',
    'method' => 'eth_blockNumber',
    'params' => [
        
    ],
    'id' => 1
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.blockscout.com/{chain_id}/json-rpc"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": [],\n  \"id\": 1\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.blockscout.com/{chain_id}/json-rpc")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": [],\n  \"id\": 1\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.blockscout.com/{chain_id}/json-rpc")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": [],\n  \"id\": 1\n}"

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

{
  "jsonrpc": "2.0",
  "result": "0x1234567",
  "id": 1
}

ETH RPC

Ethereum JSON-RPC endpoint

Single endpoint for all standard Ethereum JSON-RPC 2.0 methods. Send a POST request with a JSON body specifying the method and params.

Supported methods: eth_blockNumber, eth_getBalance, eth_getLogs, eth_gasPrice, eth_getTransactionByHash, eth_getTransactionReceipt, eth_chainId, eth_maxPriorityFeePerGas, eth_getTransactionCount, eth_getCode, eth_getStorageAt, eth_estimateGas, eth_getBlockByNumber, eth_getBlockByHash, eth_sendRawTransaction, eth_call

Example:

curl -H "content-type: application/json" -H "Authorization: Bearer YOUR_KEY" -X POST \
  --data '{"id":0,"jsonrpc":"2.0","method":"eth_blockNumber","params":[]}' \
  https://api.blockscout.com/1/json-rpc

POST

{chain_id}

json-rpc

Ethereum JSON-RPC endpoint

curl --request POST \
  --url https://api.blockscout.com/{chain_id}/json-rpc \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
'

import requests

url = "https://api.blockscout.com/{chain_id}/json-rpc"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": [],
    "id": 1
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({jsonrpc: '2.0', method: 'eth_blockNumber', params: [], id: 1})
};

fetch('https://api.blockscout.com/{chain_id}/json-rpc', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.blockscout.com/{chain_id}/json-rpc",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'jsonrpc' => '2.0',
    'method' => 'eth_blockNumber',
    'params' => [
        
    ],
    'id' => 1
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.blockscout.com/{chain_id}/json-rpc"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": [],\n  \"id\": 1\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.blockscout.com/{chain_id}/json-rpc")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": [],\n  \"id\": 1\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.blockscout.com/{chain_id}/json-rpc")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": [],\n  \"id\": 1\n}"

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

{
  "jsonrpc": "2.0",
  "result": "0x1234567",
  "id": 1
}

Authorizations

Authorization

string

header

required

API key passed as a Bearer token in the Authorization header.

Path Parameters

chain_id

string

required

The ID of the blockchain

Body

application/json

Returns the latest block number in the chain in hexadecimal format.

JSON-RPC Method: eth_blockNumber

This endpoint uses the standard Ethereum JSON-RPC 2.0 format.

jsonrpc

string

default:2.0

required

JSON-RPC version

Example:

"2.0"

method

enum<string>

required

Must be "eth_blockNumber"

Available options:

eth_blockNumber

Example:

"eth_blockNumber"

params

array

required

No parameters required

required

A client-defined identifier for this request. The server echoes it back unchanged in the response, so you can match responses to requests. This is especially useful when sending multiple calls in a batch. For single requests any value works — use any integer (e.g. 1) or string (e.g. "my-request"). Set to null if you do not need to correlate the response.

Example:

1

Response

200 - application/json

Successful JSON-RPC 2.0 response

jsonrpc

string

Example:

"2.0"

result

any

Method result (type varies by method)

error

object

Present only on error

Show child attributes

Example:

1

Blockscout APIs

PRO API Endpoints

PRO RPC & ETH RPC

Additional Service APIs

Ethereum JSON-RPC endpoint

Authorizations

Path Parameters

Body

Response