The quickest way to start building on Fuel with Quicknode is by sending a GraphQL request to your endpoint. In this quickstart, you'll create an endpoint, copy its provider URL, and make your first request. Code samples are available in cURL as well as other popular programming languages.

Get Your Fuel Endpoint

1

创建一个 Quicknode 账户

如果您尚未注册，请在此注册。

2

前往您的仪表盘

从左侧边栏菜单中打开“端点”仪表板，以管理您所有的区块链端点

3

创建一个新的端点

Click Create an Endpoint in the top-right corner, select Fuel as your blockchain, then select your preferred network

4

复制您的服务商 URL

请将该 HTTP URL 备好。您将在下文的请求中用到它。

了解有关仪表板的更多信息

如需了解 Quicknode 仪表盘的详细操作指南，请参阅我们的 指南

发送您的第一个请求

Your endpoint is ready. Now, let's make your first call to the Fuel blockchain. We'll use the getChainName query, which retrieves the name of the blockchain network. Select your preferred language and follow the steps below to send your first request.

cURL

1

检查 cURL 的安装情况

大多数基于 *nix 的系统默认都支持 cURL。打开终端，运行以下命令检查 cURL 的版本：

curl --version

2

Get chain name

Retrieve the chain name using the getChainName query:

curl --location 'YOUR_QUICKNODE_ENDPOINT_URL/v1/graphql' \
--header 'Accept: application/json' \
--header 'Content-Type: application/json' \
--data '{"query": "{ chain { name } }"}'

Node.js

1

设置您的项目

Create a directory and initialize a Node.js project:

mkdir fuel-js-quickstart
cd fuel-js-quickstart
npm init -y

2

Create app.js

Create a file named app.js to call the getChainName query:

const https = require('https');

const data = JSON.stringify({
  "query": "{ chain { name } }"
});

const options = {
  hostname: '{your-endpoint-name}.quiknode.pro',
  path: '/{your-token}/v1/graphql',
  method: 'POST',
  headers: {
    'Accept': 'application/json',
    'Content-Type': 'application/json',
    'Content-Length': data.length
  }
};

const req = https.request(options, (res) => {
  let result = '';
  res.on('data', (chunk) => {
    result += chunk;
  });
  res.on('end', () => {
    console.log('Chain name:', result);
  });
});

req.on('error', (error) => {
  console.error('Error:', error);
});

req.write(data);
req.end();

3

运行

Execute your script:

node app.js

Python

1

设置您的项目

为您的 Python 项目创建一个新目录：

mkdir fuel-python-quickstart
cd fuel-python-quickstart

2

创建并激活虚拟环境

创建一个虚拟环境来管理依赖项：

python3 -m venv venv
source venv/bin/activate

3

安装请求

安装 requests 库以进行 HTTP 请求：

pip 安装 requests

4

编写一个 Python 脚本（app.py）

Create a Python file to call the getChainName query:

import requests
import json

url = "YOUR_QUICKNODE_ENDPOINT_URL/v1/graphql"

payload = json.dumps({
  "query": "{ chain { name } }"
})

headers = {
  'Accept': 'application/json',
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print('Chain name:')
print(response.text)

5

运行

Execute your script:

python app.py

TypeScript

1

设置您的项目

Create a directory and initialize a TypeScript project:

mkdir fuel-ts-quickstart
cd fuel-ts-quickstart
npm init -y
npm install typescript @types/node tsx
npx tsc --init

2

Create app.ts

Create a file named app.ts to call the getChainName query:

import https from 'https';

interface GraphQLResponse {
  data: {
    chain: {
      name: string;
    };
  };
}

const data = JSON.stringify({
  query: "{ chain { name } }"
});

const options: https.RequestOptions = {
  hostname: '{your-endpoint-name}.quiknode.pro',
  path: '/{your-token}/v1/graphql',
  method: 'POST',
  headers: {
    'Accept': 'application/json',
    'Content-Type': 'application/json',
    'Content-Length': data.length
  }
};

const req = https.request(options, (res) => {
  let result = '';
  res.on('data', (chunk: Buffer) => {
    result += chunk.toString();
  });
  res.on('end', () => {
    const response: GraphQLResponse = JSON.parse(result);
    console.log('Chain name:', response.data.chain.name);
  });
});

req.on('error', (error: Error) => {
  console.error('Error:', error);
});

req.write(data);
req.end();

3

运行

Execute your script:

npx tsx app.ts

Apollo Client

1

设置您的项目

Create a directory and install Apollo Client:

mkdir fuel-apollo-quickstart
cd fuel-apollo-quickstart
npm init -y
npm install @apollo/client graphql cross-fetch

2

Create app.js

Create a file named app.js to query using Apollo Client:

const { ApolloClient, InMemoryCache, gql, HttpLink } = require('@apollo/client');
const fetch = require('cross-fetch');

const client = new ApolloClient({
  link: new HttpLink({
    uri: 'YOUR_QUICKNODE_ENDPOINT_URL/v1/graphql',
    fetch,
  }),
  cache: new InMemoryCache(),
});

const GET_CHAIN_NAME = gql`
  query GetChainName {
    chain {
      name
    }
  }
`;

client
  .query({
    query: GET_CHAIN_NAME,
  })
  .then((result) => {
    console.log('Chain name:', result.data.chain.name);
  })
  .catch((error) => {
    console.error('Error:', error);
  });

3

运行

Execute your script:

node app.js

Ruby

1

设置您的项目

为您的 Ruby 项目创建一个新目录：

mkdir fuel-ruby-quickstart
cd fuel-ruby-quickstart

2

检查 Ruby 安装情况

请确认您的系统上已安装 Ruby。如果尚未安装，请从 https://ruby-lang.org 安装：

ruby --version

3

Create a Ruby script (app.rb)

Create an app.rb file to call the getChainName query:

require "uri"
require "json"
require "net/http"

url = URI("YOUR_QUICKNODE_ENDPOINT_URL/v1/graphql")

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

request = Net::HTTP::Post.new(url)
request["Accept"] = "application/json"
request["Content-Type"] = "application/json"
request.body = JSON.dump({
  "query": "{ chain { name } }"
})

response = https.request(request)
result = JSON.parse(response.read_body)
puts "Chain name:"
puts result["data"]["chain"]["name"]

4

运行该脚本

Execute your Ruby script:

ruby app.rb

如果您想进一步了解如何发送 API 请求，请查看我们的指南和示例应用。

API 概述

Discover Supported Fuel APIs, Networks, Chain Configurations, and compatible Quicknode Products

提供商端点

Learn how to set up and configure your Fuel RPC endpoints for development and production use

终端安全

通过令牌认证、速率限制、白名单、JWT 以及最佳安全实践来保护您的终端

Marketplace 扩展程序

Discover powerful add-ons and extensions to enhance your Fuel development workflow

我们 ❤️ 您的反馈！

如果您对本文档有任何反馈或疑问，请告诉我们。我们非常期待您的反馈！