### Install x402 packages

Source: https://nodeflare.app/docs/x402

Install the required packages for the x402 quick start: @x402/fetch, @x402/evm, and viem.

```bash
npm install @x402/fetch @x402/evm viem
```

--------------------------------

### Install web3.py

Source: https://nodeflare.app/docs/examples/web3py

Install the web3.py library using pip.

```bash
pip install web3
```

--------------------------------

### Install viem

Source: https://nodeflare.app/docs/examples/viem

Install the viem package with npm.

```terminal
npm install viem
```

--------------------------------

### WebSocket Subscription Example

Source: https://nodeflare.app/docs/endpoints/optimism

JavaScript example for connecting to the WebSocket endpoint and subscribing to newHeads. Replace YOUR_KEY with your actual key.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/op/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
```

--------------------------------

### WebSocket Subscription Example (JavaScript)

Source: https://nodeflare.app/docs/endpoints/hyperliquid

JavaScript example to connect to the WebSocket endpoint and subscribe to newHeads. Replace YOUR_KEY with your actual key.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/hl/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
ws.onmessage = (e) => console.log(JSON.parse(e.data));
```

--------------------------------

### WebSocket Subscription Example

Source: https://nodeflare.app/docs/endpoints/ethereum

JavaScript example for connecting to the WebSocket endpoint and subscribing to newHeads. Replace YOUR_KEY with your API key.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/eth/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
ws.onmessage = (e) => console.log(JSON.parse(e.data));
```

--------------------------------

### WebSocket Subscription Example (JavaScript)

Source: https://nodeflare.app/docs/endpoints/bnb

JavaScript example to connect to the WebSocket endpoint and subscribe to new block headers using eth_subscribe.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/bnb/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
```

--------------------------------

### WebSocket Subscription Example (JavaScript)

Source: https://nodeflare.app/docs/endpoints/base

JavaScript example to connect to the WebSocket endpoint and subscribe to newHeads. Replace YOUR_KEY with your API key.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/base/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
ws.onmessage = (e) => console.log(JSON.parse(e.data));
```

--------------------------------

### Install ethers.js v6

Source: https://nodeflare.app/docs/examples/ethers

Installs ethers.js v6, the current stable release of the Ethereum JavaScript library.

```bash
npm install ethers
```

--------------------------------

### WebSocket Subscription Example in JavaScript

Source: https://nodeflare.app/docs/endpoints/arbitrum

Connects to the authenticated WebSocket endpoint and subscribes to new block headers using eth_subscribe.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/arb/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
```

--------------------------------

### GET https://x402.nodeflare.app/

Source: https://nodeflare.app/docs/x402

Returns a machine-readable list of chains supported by the x402 endpoint.

```APIDOC
## [GET] https://x402.nodeflare.app/

### Description
Returns a machine-readable list of chains supported by the x402 endpoint.

### Method
GET

### Endpoint
https://x402.nodeflare.app/

### Response
#### Success Response (200)
- **body** (object) - Machine-readable chain list.

### Notes
- No authentication required.
```

--------------------------------

### WebSocket Subscription Example (JavaScript)

Source: https://nodeflare.app/docs/endpoints/avalanche

Connects to the authenticated WebSocket endpoint and subscribes to new block headers using eth_subscribe. Replace YOUR_KEY with your API key.

```javascript
const ws = new WebSocket("wss://rpc.nodeflare.app/avax/ws/v1/YOUR_KEY");
ws.onopen = () => ws.send(JSON.stringify({
  jsonrpc: "2.0", id: 1, method: "eth_subscribe", params: ["newHeads"]
}));
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/hyperliquid

Example curl command to test the endpoint by calling eth_blockNumber. Replace YOUR_KEY with your actual key.

```bash
curl https://rpc.nodeflare.app/hl/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/robinhood

Example curl command to test the endpoint by calling eth_blockNumber. Replace YOUR_KEY with your actual API key.

```bash
curl https://rpc.nodeflare.app/robinhood/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/soneium

Example curl command to test the Soneium RPC endpoint by fetching the current block number.

```bash
curl https://rpc.nodeflare.app/soneium/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### HTTP header authentication with curl

Source: https://nodeflare.app/docs/authentication

Send an authenticated request using the X-API-Key header. This example posts a JSON-RPC request to get the latest block number.

```bash
curl https://rpc.nodeflare.app/eth/v1/ \
  -H "X-API-Key: nf_live_YOUR_KEY" \
  -X POST \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Fetch Portfolio with curl

Source: https://nodeflare.app/docs/data

POST to /data/portfolio to get native-coin USD valuation and a totalUsd, with a per-chain breakdown sorted by value. This endpoint adds USD valuation to the balances data.

```bash
curl -X POST https://rpc.nodeflare.app/data/portfolio \
  -H 'Content-Type: application/json' \
  -d '{ "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045" }'
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/bnb

Example curl command to test the BNB Chain RPC endpoint by calling eth_blockNumber. Replace YOUR_KEY with your actual key.

```bash
curl https://rpc.nodeflare.app/bnb/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Switch chains with web3.py

Source: https://nodeflare.app/docs/examples/web3py

Switch chains by changing the chain slug in the RPC URL path. Examples for Base, Arbitrum, and BNB are shown.

```python
base_w3 = Web3(Web3.HTTPProvider("https://rpc.nodeflare.app/base/v1/YOUR_KEY"))
arb_w3  = Web3(Web3.HTTPProvider("https://rpc.nodeflare.app/arb/v1/YOUR_KEY"))
bnb_w3  = Web3(Web3.HTTPProvider("https://rpc.nodeflare.app/bnb/v1/YOUR_KEY"))
```

--------------------------------

### Get account balance

Source: https://nodeflare.app/docs/examples/web3py

Get the ETH balance of an address and convert from wei to ether.

```python
address = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
balance_wei = w3.eth.get_balance(address)
balance_eth = w3.from_wei(balance_wei, "ether")
print(f"{balance_eth} ETH")
```

--------------------------------

### Token Discovery with x402 in JavaScript

Source: https://nodeflare.app/docs/data

Set discover: true to find holdings without passing contract addresses. Discovery scans incoming Transfer logs (eth_getLogs) and is a paid method using /x402 endpoints. This example uses @x402/fetch and @x402/evm to pay for the request. Discovered tokens are USD-priced via DefiLlama; junk-symbol spam is filtered on well-covered chains and near-worthless tokens are dropped by default, while legitimate tokens without a market price are still returned.

```javascript
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY); // USDC on Base
const pay = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

const res = await pay("https://rpc.nodeflare.app/data/portfolio/x402", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ address: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", discover: true }),
});
```

--------------------------------

### Get an account balance with viem

Source: https://nodeflare.app/docs/examples/viem

Fetches the balance of a specified address using the public client. The balance is returned as a BigInt in wei.

```typescript
const balance = await client.getBalance({
  address: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
});
console.log(balance); // BigInt in wei
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/base

Example curl command to test the Base RPC endpoint. Sends a JSON-RPC request to eth_blockNumber. Replace YOUR_KEY with your API key.

```bash
curl https://rpc.nodeflare.app/base/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Connect to Ethereum with ethers.js

Source: https://nodeflare.app/docs/quick-start

Connect to NodeFlare's Ethereum endpoint using ethers.js. Replace YOUR_KEY with your API key. The example fetches the latest block number and logs it.

```javascript
import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider(
  `https://rpc.nodeflare.app/eth/v1/${YOUR_KEY}`
);

const block = await provider.getBlockNumber();
console.log(block); // 19842301
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/mode

Run this curl command in a terminal to test the endpoint. Replace YOUR_KEY with your actual API key. It sends a JSON-RPC request to get the current block number.

```bash
curl https://rpc.nodeflare.app/mode/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/xlayer

Quick test to verify connectivity to the XLayer RPC endpoint. Sends a JSON-RPC request to get the latest block number. Replace YOUR_KEY with your API key.

```bash
curl https://rpc.nodeflare.app/xlayer/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Get an Account Balance

Source: https://nodeflare.app/docs/examples/ethers

Gets the ETH balance of a specified address and formats it using ethers.formatEther.

```javascript
const balance = await provider.getBalance("0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045");
console.log(ethers.formatEther(balance), "ETH");
```

--------------------------------

### viem client configuration

Source: https://nodeflare.app/docs/rpc-for-ai-agents

Create a viem public client using the base chain and NodeFlare RPC URL with your free key.

```TypeScript
import { createPublicClient, http } from "viem";
import { base } from "viem/chains";

const client = createPublicClient({
  chain: base,
  transport: http("https://rpc.nodeflare.app/base/v1/YOUR_KEY"),
});
```

--------------------------------

### Create a public client with viem

Source: https://nodeflare.app/docs/examples/viem

Create a public client using the mainnet chain and the NodeFlare HTTP RPC endpoint.

```typescript
import { createPublicClient, http } from "viem";
import { mainnet } from "viem/chains";

const client = createPublicClient({
  chain: mainnet,
  transport: http("https://rpc.nodeflare.app/eth/v1/YOUR_KEY"),
});
```

--------------------------------

### Send a transaction with viem

Source: https://nodeflare.app/docs/examples/viem

Creates a wallet client using a private key and sends a transaction. Then waits for the transaction receipt and logs the block number.

```typescript
import { createWalletClient } from "viem";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount("0xYOUR_PRIVATE_KEY");

const walletClient = createWalletClient({
  account,
  chain: mainnet,
  transport: http("https://rpc.nodeflare.app/eth/v1/YOUR_KEY"),
});

const hash = await walletClient.sendTransaction({
  to: "0xRecipientAddress",
  value: 10000000000000000n, // 0.01 ETH
});

const receipt = await client.waitForTransactionReceipt({ hash });
console.log("Block:", receipt.blockNumber);
```

--------------------------------

### web3.py HTTP provider configuration

Source: https://nodeflare.app/docs/rpc-for-ai-agents

Create a web3.py Web3 instance using an HTTP provider with NodeFlare's RPC URL.

```Python
from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.nodeflare.app/base/v1/YOUR_KEY"))
```

--------------------------------

### Read the latest block with viem

Source: https://nodeflare.app/docs/examples/viem

Uses the public client to get the latest block number and logs it to the console.

```typescript
const block = await client.getBlockNumber();
console.log("Block:", block);
```

--------------------------------

### Switch chains with viem

Source: https://nodeflare.app/docs/examples/viem

Create a public client for Base, Arbitrum, BSC, or Optimism by importing the corresponding chain and using the NodeFlare RPC endpoint.

```typescript
import { base, arbitrum, bsc, optimism } from "viem/chains";

const baseClient = createPublicClient({
  chain: base,
  transport: http("https://rpc.nodeflare.app/base/v1/YOUR_KEY"),
});
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/avalanche

Sends a JSON-RPC request to the authenticated endpoint to get the current block number. Replace YOUR_KEY with your API key.

```bash
curl https://rpc.nodeflare.app/avax/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### Connect a Provider with ethers.JsonRpcProvider

Source: https://nodeflare.app/docs/examples/ethers

Creates a JsonRpcProvider for the Ethereum mainnet endpoint. Replace YOUR_KEY with your API key from the dashboard.

```javascript
import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider(
  "https://rpc.nodeflare.app/eth/v1/YOUR_KEY"
);
```

--------------------------------

### POST https://rpc.nodeflare.app/eth/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/ethereum

Authenticated Ethereum mainnet RPC endpoint. Replace YOUR_KEY with your API key. Supports all standard eth_ methods over JSON-RPC 2.0.

```APIDOC
## POST https://rpc.nodeflare.app/eth/v1/{YOUR_KEY}

### Description
Authenticated Ethereum mainnet RPC endpoint. Replace YOUR_KEY with your API key. Supports all standard eth_ methods over JSON-RPC 2.0.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/eth/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key.

#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version, e.g., "2.0".
- **method** (string) - Required - The Ethereum JSON-RPC method, e.g., "eth_blockNumber".
- **params** (array) - Required - Array of parameters for the method.
- **id** (number) - Required - Request identifier.

### Request Example
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **result** (string) - The result, typically a hexadecimal block number.
- **id** (number) - Request identifier.

#### Response Example
{
  "jsonrpc": "2.0",
  "result": "0x4b7",
  "id": 1
}

```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/arbitrum

Sends a JSON-RPC request to the Arbitrum One endpoint to get the current block number. Replace YOUR_KEY with your actual API key.

```bash
curl https://rpc.nodeflare.app/arb/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### POST /robinhood/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/robinhood

Main RPC endpoint for Robinhood Chain. Requires an API key for full access, including heavy methods like eth_getLogs. Use this endpoint for authenticated requests.

```APIDOC
## [POST] /robinhood/v1/{YOUR_KEY}

### Description
Main RPC endpoint for Robinhood Chain. Requires an API key for full access, including heavy methods like eth_getLogs. Use this endpoint for authenticated requests.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/robinhood/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key for authentication.

### Request Example
```json
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
```

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request ID.
- **result** (string) - The result of the method call, e.g., block number in hex.

#### Response Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x1"
}
```

```

--------------------------------

### curl eth_chainId request to Arc RPC

Source: https://nodeflare.app/docs/endpoints/arc

Sends a JSON-RPC request to the public Arc endpoint to get the chain ID. Expected result is 0x13b2 (5042).

```bash
curl https://rpc.nodeflare.app/arc/public \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
```

--------------------------------

### Send a transaction

Source: https://nodeflare.app/docs/examples/web3py

Send a transaction using web3.py. Replace YOUR_PRIVATE_KEY and RecipientAddress. The example sends 0.01 ETH with a gas limit of 21000 and chainId 1 (Ethereum mainnet).

```python
from eth_account import Account

private_key = "0xYOUR_PRIVATE_KEY"
account = Account.from_key(private_key)

tx = {
    "to": "0xRecipientAddress",
    "value": w3.to_wei(0.01, "ether"),
    "gas": 21000,
    "gasPrice": w3.eth.gas_price,
    "nonce": w3.eth.get_transaction_count(account.address),
    "chainId": 1,
}

signed = w3.eth.account.sign_transaction(tx, private_key)
tx_hash = w3.eth.send_raw_transaction(signed.raw_transaction)
receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
print(f"Confirmed in block {receipt['blockNumber']}")
```

--------------------------------

### POST /bob/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/bob

The main RPC endpoint for BOB mainnet. Requires an API key for full access, including heavy methods. Use this endpoint for production workloads with higher rate limits.

```APIDOC
## [POST] /bob/v1/{YOUR_KEY}

### Description
Main RPC endpoint for BOB mainnet. Requires an API key for full access, including heavy methods. Use this endpoint for production workloads with higher rate limits.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/bob/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key for authentication and higher rate limits.

#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version, e.g., "2.0".
- **method** (string) - Required - The RPC method to call, e.g., "eth_blockNumber".
- **params** (array) - Required - Parameters for the method, can be empty.
- **id** (number) - Required - Request identifier.

### Request Example
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (string) - The result of the method call, e.g., a hex block number.

#### Response Example
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x4b7"
}
```

--------------------------------

### WS wss://rpc.nodeflare.app/hl/ws/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/hyperliquid

Connects to the HyperEVM WebSocket endpoint for real-time subscriptions. Requires an API key.

```APIDOC
## [WS] wss://rpc.nodeflare.app/hl/ws/v1/{YOUR_KEY}

### Description
Connects to the HyperEVM WebSocket endpoint for real-time subscriptions. Requires an API key.

### Method
WebSocket

### Endpoint
wss://rpc.nodeflare.app/hl/ws/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key.

### Request Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_subscribe",
  "params": ["newHeads"]
}
```

### Response
#### Success Response
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (string) - Subscription identifier.

#### Response Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x9cef"
}
```
```

--------------------------------

### Fetch Balances with curl

Source: https://nodeflare.app/docs/data

POST to /data/balances to retrieve native and token balances for an address across specified chains. Each chain returns native balance and token entries with symbol, decimals, human-readable balance, raw, and USD price/value when available. If decimals() cannot be read, balance is null and raw is preserved.

```bash
curl -X POST https://rpc.nodeflare.app/data/balances \
  -H 'Content-Type: application/json' \
  -d '{
    "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
    "chains": ["base", "eth", "robinhood"],
    "tokens": { "base": ["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"] }
  }'
```

--------------------------------

### POST /data/portfolio

Source: https://nodeflare.app/docs/data

Returns a portfolio summary with total USD value and per-chain breakdown.

```APIDOC
## POST /data/portfolio

### Description
Adds native-coin USD valuation and rolls everything into a `totalUsd`, with a per-chain breakdown sorted by value.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/data/portfolio

### Parameters
#### Request Body
- **address** (string) - Required - The wallet address to query.

### Request Example
{
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}

### Response
#### Success Response (200)
- **totalUsd** - Total portfolio value in USD.
- **per-chain breakdown** - Each chain's holdings with USD valuation, sorted by value.

#### Response Example
{
  "totalUsd": 1234.56,
  "chains": [
    { "chain": "base", "usdValue": 1000.0, "tokens": [...] }
  ]
}
```

--------------------------------

### Quick Test with curl

Source: https://nodeflare.app/docs/endpoints/optimism

Quick test to verify connectivity to the Optimism RPC endpoint. Sends a JSON-RPC request for eth_blockNumber. Replace YOUR_KEY with your actual key.

```bash
curl https://rpc.nodeflare.app/op/v1/YOUR_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

--------------------------------

### WS wss://rpc.nodeflare.app/hl/ws/public

Source: https://nodeflare.app/docs/endpoints/hyperliquid

Connects to the public HyperEVM WebSocket endpoint for real-time subscriptions. No API key required, but rate-limited to 2 req/s.

```APIDOC
## [WS] wss://rpc.nodeflare.app/hl/ws/public

### Description
Connects to the public HyperEVM WebSocket endpoint for real-time subscriptions. No API key required, but rate-limited to 2 req/s.

### Method
WebSocket

### Endpoint
wss://rpc.nodeflare.app/hl/ws/public

### Request Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_subscribe",
  "params": ["newHeads"]
}
```

### Response
#### Success Response
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (string) - Subscription identifier.

#### Response Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x9cef"
}
```
```

--------------------------------

### BOB Public RPC Endpoint (No API Key)

Source: https://nodeflare.app/docs/endpoints/bob

Public endpoint for BOB mainnet RPC. No API key required, but rate-limited to 2 req/s per IP. Heavy methods (eth_getLogs, trace_*, debug_*) are restricted.

```text
https://rpc.nodeflare.app/bob/public
```

--------------------------------

### URL path authentication

Source: https://nodeflare.app/docs/authentication

Use the recommended URL path authentication by appending your API key to the endpoint. Replace YOUR_KEY with your actual key.

```text
https://rpc.nodeflare.app/eth/v1/nf_live_YOUR_KEY
```

--------------------------------

### WebSocket transport for mainnet with viem

Source: https://nodeflare.app/docs/examples/viem

Create a public client using WebSocket transport for real-time subscriptions and lower latency.

```typescript
import { createPublicClient, webSocket } from "viem";
import { mainnet } from "viem/chains";

const client = createPublicClient({
  chain: mainnet,
  transport: webSocket("wss://rpc.nodeflare.app/eth/ws/v1/YOUR_KEY"),
});
```

--------------------------------

### WebSocket transport for Base with viem

Source: https://nodeflare.app/docs/examples/viem

Create a public client using WebSocket transport for the Base chain.

```typescript
import { base } from "viem/chains";

const baseClient = createPublicClient({
  chain: base,
  transport: webSocket("wss://rpc.nodeflare.app/base/ws/v1/YOUR_KEY"),
});
```

--------------------------------

### POST https://rpc.nodeflare.app/hl/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/hyperliquid

Sends a JSON-RPC request to the HyperEVM RPC endpoint. Requires an API key for full access.

```APIDOC
## [POST] https://rpc.nodeflare.app/hl/v1/{YOUR_KEY}

### Description
Sends a JSON-RPC request to the HyperEVM RPC endpoint. Requires an API key for full access.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/hl/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key.

#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version (e.g., "2.0").
- **method** (string) - Required - The JSON-RPC method to call (e.g., "eth_blockNumber").
- **params** (array) - Required - Parameters for the method.
- **id** (number) - Required - Request identifier.

### Request Example
```json
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
```

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (string) - The result of the method call.

#### Response Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x4b7"
}
```
```

--------------------------------

### POST /bob/public

Source: https://nodeflare.app/docs/endpoints/bob

Public RPC endpoint for BOB mainnet. No API key required, but rate-limited to 2 requests per second per IP. Heavy methods are restricted.

```APIDOC
## [POST] /bob/public

### Description
Public RPC endpoint for BOB mainnet. No API key required, but rate-limited to 2 requests per second per IP. Heavy methods are restricted.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/bob/public

### Parameters
#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version, e.g., "2.0".
- **method** (string) - Required - The RPC method to call, e.g., "eth_blockNumber".
- **params** (array) - Required - Parameters for the method, can be empty.
- **id** (number) - Required - Request identifier.

### Request Example
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (string) - The result of the method call, e.g., a hex block number.

#### Response Example
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x4b7"
}
```

--------------------------------

### POST /data/balances/x402

Source: https://nodeflare.app/docs/data

Token discovery and higher limits for balance queries, running over x402 without an account.

```APIDOC
## POST /data/balances/x402

### Description
Token discovery and higher limits for balance queries, running over x402 without an account.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/data/balances/x402

### Parameters
#### Request Body
- **address** (string) - Required - The 0x address to look up.
- **chains** (string[]) - Optional - Chains to include — slug (base), name (ethereum), or numeric ID (8453). Defaults to every supported chain.
- **tokens** (object) - Optional - ERC-20 contracts per chain, e.g. { "base": ["0x833589…"] }.
- **discover** (boolean) - Optional - Auto-find every ERC-20 the address holds (paid; x402 endpoints only).
- **fromBlock** (string) - Optional - Discovery start block (hex or "earliest").
- **minUsd** (number) - Optional - Discovery: drop priced tokens worth less than this USD (default 0.01).
- **includeSpam** (boolean) - Optional - Discovery: keep junk-symbol tokens (default off).
- **includeDust** (boolean) - Optional - Discovery: keep sub-1e-9 balances (default off).

### Response
#### Success Response (200)
Returns native and ERC-20 token balances for the specified address across the requested chains, with token discovery and higher limits.

```

--------------------------------

### POST https://rpc.nodeflare.app/xlayer/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/xlayer

Authenticated JSON-RPC endpoint for XLayer mainnet. Requires an API key in the URL path. Supports all documented methods.

```APIDOC
## [POST] https://rpc.nodeflare.app/xlayer/v1/{YOUR_KEY}

### Description
Sends a JSON-RPC request to the XLayer mainnet. Requires an API key in the URL path. Supports all documented methods.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/xlayer/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key.

#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version, e.g., "2.0".
- **method** (string) - Required - The JSON-RPC method to call.
- **params** (array) - Required - Parameters for the method.
- **id** (number) - Required - Request identifier.

### Request Example
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (any) - The result of the method call.

#### Response Example
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x..."
}
```

--------------------------------

### POST /robinhood/public

Source: https://nodeflare.app/docs/endpoints/robinhood

Public RPC endpoint for Robinhood Chain. No API key required, but rate-limited to 1 request per 10 seconds per IP and only basic methods are available. Heavy methods like eth_getLogs require a key.

```APIDOC
## [POST] /robinhood/public

### Description
Public RPC endpoint for Robinhood Chain. No API key required, but rate-limited to 1 request per 10 seconds per IP and only basic methods are available. Heavy methods like eth_getLogs require a key.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/robinhood/public

### Request Example
```json
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
```

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request ID.
- **result** (string) - The result of the method call, e.g., block number in hex.

#### Response Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x1"
}
```

```

--------------------------------

### POST https://rpc.nodeflare.app/mode/v1/{YOUR_KEY}

Source: https://nodeflare.app/docs/endpoints/mode

Main RPC endpoint for Mode mainnet. Requires an API key for full access. Supports JSON-RPC methods for chain, blocks, transactions, state, gas, logs, and tracing.

```APIDOC
## POST https://rpc.nodeflare.app/mode/v1/{YOUR_KEY}

### Description
Main RPC endpoint for Mode mainnet. Requires an API key for full access. Supports JSON-RPC methods for chain, blocks, transactions, state, gas, logs, and tracing.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/mode/v1/{YOUR_KEY}

### Parameters
#### Path Parameters
- **YOUR_KEY** (string) - Required - Your API key.

#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version (e.g., "2.0").
- **method** (string) - Required - The RPC method to call (e.g., "eth_blockNumber").
- **params** (array) - Required - Parameters for the method.
- **id** (number) - Required - Request identifier.

### Request Example
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (any) - The result of the RPC call.

#### Response Example
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x..."
}
```

--------------------------------

### POST /data/portfolio/x402

Source: https://nodeflare.app/docs/data

Token discovery and higher limits for portfolio queries, running over x402 without an account.

```APIDOC
## POST /data/portfolio/x402

### Description
Token discovery and higher limits for portfolio queries, running over x402 without an account.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/data/portfolio/x402

### Parameters
#### Request Body
- **address** (string) - Required - The 0x address to look up.
- **chains** (string[]) - Optional - Chains to include — slug (base), name (ethereum), or numeric ID (8453). Defaults to every supported chain.
- **tokens** (object) - Optional - ERC-20 contracts per chain, e.g. { "base": ["0x833589…"] }.
- **discover** (boolean) - Optional - Auto-find every ERC-20 the address holds (paid; x402 endpoints only).
- **fromBlock** (string) - Optional - Discovery start block (hex or "earliest").
- **minUsd** (number) - Optional - Discovery: drop priced tokens worth less than this USD (default 0.01).
- **includeSpam** (boolean) - Optional - Discovery: keep junk-symbol tokens (default off).
- **includeDust** (boolean) - Optional - Discovery: keep sub-1e-9 balances (default off).

### Response
#### Success Response (200)
Returns balances, USD valuation, and total portfolio value for the specified address across the requested chains, with token discovery and higher limits.

```

--------------------------------

### POST https://rpc.nodeflare.app/avax/public

Source: https://nodeflare.app/docs/endpoints/avalanche

Public Avalanche C-Chain RPC endpoint. No API key required. Rate-limited to 2 req/s per IP. Heavy methods (eth_getLogs, trace_*, debug_*) are restricted.

```APIDOC
## [POST] https://rpc.nodeflare.app/avax/public

### Description
Public Avalanche C-Chain RPC endpoint. No API key required. Rate-limited to 2 req/s per IP. Heavy methods (eth_getLogs, trace_*, debug_*) are restricted.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/avax/public

### Request Example
```json
{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}
```

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request ID.
- **result** (string) - Hex-encoded block number.

#### Response Example
```json
{"jsonrpc":"2.0","id":1,"result":"0x4b7"}
```
```

--------------------------------

### AgentKit transport configuration

Source: https://nodeflare.app/docs/rpc-for-ai-agents

Create a viem HTTP transport with NodeFlare's RPC URL to supply to your AgentKit WalletProvider or viem client.

```TypeScript
import { http } from "viem";
const transport = http("https://rpc.nodeflare.app/base/v1/YOUR_KEY");
// supply this transport to your AgentKit WalletProvider / viem client
```

--------------------------------

### POST /data/portfolio

Source: https://nodeflare.app/docs/data

Returns native and ERC-20 token balances with USD valuation and total portfolio value for a given address across multiple EVM chains.

```APIDOC
## POST /data/portfolio

### Description
Returns native and ERC-20 token balances with USD valuation and total portfolio value for a given address across multiple EVM chains.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/data/portfolio

### Parameters
#### Request Body
- **address** (string) - Required - The 0x address to look up.
- **chains** (string[]) - Optional - Chains to include — slug (base), name (ethereum), or numeric ID (8453). Defaults to every supported chain.
- **tokens** (object) - Optional - ERC-20 contracts per chain, e.g. { "base": ["0x833589…"] }.
- **discover** (boolean) - Optional - Auto-find every ERC-20 the address holds (paid; x402 endpoints only).
- **fromBlock** (string) - Optional - Discovery start block (hex or "earliest").
- **minUsd** (number) - Optional - Discovery: drop priced tokens worth less than this USD (default 0.01).
- **includeSpam** (boolean) - Optional - Discovery: keep junk-symbol tokens (default off).
- **includeDust** (boolean) - Optional - Discovery: keep sub-1e-9 balances (default off).

### Response
#### Success Response (200)
Returns balances, USD valuation, and total portfolio value for the specified address across the requested chains.

```

--------------------------------

### POST https://rpc.nodeflare.app/hl/public

Source: https://nodeflare.app/docs/endpoints/hyperliquid

Sends a JSON-RPC request to the public HyperEVM RPC endpoint. No API key required, but rate-limited to 2 req/s per IP. Heavy methods are restricted.

```APIDOC
## [POST] https://rpc.nodeflare.app/hl/public

### Description
Sends a JSON-RPC request to the public HyperEVM RPC endpoint. No API key required, but rate-limited to 2 req/s per IP. Heavy methods are restricted.

### Method
POST

### Endpoint
https://rpc.nodeflare.app/hl/public

### Parameters
#### Request Body
- **jsonrpc** (string) - Required - JSON-RPC version (e.g., "2.0").
- **method** (string) - Required - The JSON-RPC method to call (e.g., "eth_blockNumber").
- **params** (array) - Required - Parameters for the method.
- **id** (number) - Required - Request identifier.

### Request Example
```json
{
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": [],
  "id": 1
}
```

### Response
#### Success Response (200)
- **jsonrpc** (string) - JSON-RPC version.
- **id** (number) - Request identifier.
- **result** (string) - The result of the method call.

#### Response Example
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x4b7"
}
```
```

--------------------------------

### Public endpoint (no API key)

Source: https://nodeflare.app/docs/endpoints/robinhood

Public endpoint that does not require an API key. Rate-limited to 1 request per 10 seconds per IP, basic methods only. Heavy methods like eth_getLogs need a key.

```text
https://rpc.nodeflare.app/robinhood/public
```

--------------------------------

### Connect to NodeFlare with web3.py

Source: https://nodeflare.app/docs/examples/web3py

Connect to NodeFlare's Ethereum RPC endpoint using web3.py. Replace YOUR_KEY with your API key. The is_connected() call returns True if the connection is successful.

```python
from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.nodeflare.app/eth/v1/YOUR_KEY"))

print(w3.is_connected())  # True
```

--------------------------------

### Make a paid RPC call with ExactEvmScheme

Source: https://nodeflare.app/docs/x402

Use the exact payment scheme to make a paid RPC call to the x402 endpoint. Requires a private key with USDC on Base (network eip155:8453). The response is the JSON-RPC result.

```typescript
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPayment = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

const res = await fetchWithPayment("https://rpc.nodeflare.app/base/x402", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ jsonrpc: "2.0", id: 1, method: "eth_blockNumber", params: [] }),
});
console.log(await res.json()); // { jsonrpc: "2.0", id: 1, result: "0x..." }
```