net_version — Ethereum JSON-RPC

Status: Available

Returns the current network ID as a decimal string (for example "1" for Ethereum mainnet).

POSThttps://triport.io/eth

Network: Ethereum
Scope: eth_read_rpc
Auth: x-token: $TRIPORT_API_KEY (or Authorization: Bearer)
Rate limit: free — 10 RPS sustained · up to 20 burst · basic — 20 RPS sustained · up to 40 burst · pro — 100 RPS sustained · up to 200 burst · business — 250 RPS sustained · up to 500 burst; Burst capacity

Endpoint and plans: Ethereum RPC endpoint. Chain check: expected Ethereum value and how to check it.

Request

cURLJavaScriptPython

curl https://triport.io/eth \
  -H "Authorization: Bearer $TRIPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "net_version",
    "params": []
  }'

const res = await fetch("https://triport.io/eth", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.TRIPORT_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "jsonrpc": "2.0",
    "id": 1,
    "method": "net_version",
    "params": []
  }),
});
const data = await res.json();
console.log(data);

import os


import requests


resp = requests.post(
    "https://triport.io/eth",
    headers={
        "Authorization": f"Bearer {os.environ['TRIPORT_API_KEY']}",
        "Content-Type": "application/json",
    },
    json={
        "jsonrpc": "2.0",
        "id": 1,
        "method": "net_version",
        "params": [],
    },
)
data = resp.json()
print(data)

Response

JSON

Example

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

net_version returns the network ID of the network the node is connected to, encoded as a decimal string. For Ethereum mainnet this is "1".

Use this method for a quick connectivity check or to detect which network your RPC connection is pointed at. Note that it is distinct from eth_chainId: net_version returns the legacy network ID as a decimal string, while eth_chainId returns the EIP-155 chain ID as a hex quantity. The two values happen to coincide on mainnet but are not guaranteed to match on every network. When you need the chain ID for replay-protected transaction signing, prefer eth_chainId.

This method takes no parameters and is available on every tier.

Parameters

This method takes no parameters.

——optional

Pass an empty array [] as params.

Response

Response fields

Field	Type	Description
`result`	string	The network ID as a decimal string. `"1"` is Ethereum mainnet.

Errors

Code	Meaning	When it happens
`401`	`trial_expired`	The API key's trial period has ended; upgrade to a paid tier to continue.
`429`	`rate_limited`	You exceeded the requests-per-second limit for your tier. Back off and retry.

Errors are returned in the standard JSON-RPC envelope. See the shared errors reference for the full error object shape and handling guidance.

Examples

JavaScript (fetch)

JavaScript

const res = await fetch("https://triport.io/eth", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.TRIPORT_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    jsonrpc: "2.0",
    id: 1,
    method: "net_version",
    params: [],
  }),
});


const { result } = await res.json();
console.log(result);              // "1"
console.log(parseInt(result, 10)); // 1

Notes

The result is a decimal string — parse it with parseInt(result, 10) (JS) or int(result) (Python), not base 16.
The network ID is stable for the lifetime of a network, so the value is safe to cache for the duration of a session.
Related: use eth_chainId for the EIP-155 chain ID as a hex quantity (the value you need when signing transactions), and eth_blockNumber to read the current head once you have confirmed the network.