What Is RubyIO and How Do You Connect to Its RPC Endpoint?

RubyIO is a blockchain network listed in OnFinality's supported network catalog. If you arrived here after searching for "rubyio," you likely want to know one of three things: what the network is, how to connect to its RPC endpoint, or why a connection attempt is failing. This page answers those questions in order and gives you a repeatable way to verify connectivity before you build on top of it.

Start here: what do you actually need?

Before copying an endpoint into a wallet or a script, decide which of these situations matches yours. The right next step is different for each.

If you are not sure whether RubyIO is the network you want, confirm the chain ID and native currency against the supported RPC networks list before you configure anything. Chain IDs are the fastest way to catch a mismatch, because two networks can share a similar name but have completely different state.

What RubyIO is, in practical terms

RubyIO is a blockchain network that exposes a JSON-RPC interface, which is the standard way applications read state and submit transactions. In day-to-day development, you interact with it through a small set of calls: check the chain ID, read an account balance, fetch the latest block, estimate gas, and broadcast a signed transaction. Everything else is built on top of those primitives.

What matters for integration is not the marketing description of the network but its connection parameters. Those are the chain ID, the RPC transport (HTTP, WebSocket, or both), the native currency, and the block explorer. OnFinality tracks these per network so you do not have to reverse-engineer them from a block explorer or a community post.

A common mistake is assuming that every EVM-style network behaves identically. The JSON-RPC method names are usually the same, but gas semantics, finality timing, and which methods are enabled can differ. Always confirm method support against the specific network rather than assuming parity with Ethereum mainnet.

Chain settings at a glance

Use this table as a checklist when configuring a wallet, a Hardhat or Foundry project, or a backend service. Fill in the values from the RubyIO network page, which is the source of truth for current settings.

If any of these are missing from your notes, resolve them before writing code. Debugging a transaction against the wrong chain ID wastes more time than a five-minute configuration check.

Connecting: a minimal request example

Once you have the endpoint, the first call to make is a chain ID check. It is cheap, it confirms the endpoint is reachable, and it confirms you are pointed at the network you think you are.

curl -s -X POST https://your-rubyio-endpoint \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_chainId",
    "params": []
  }'

A correct response returns a hex-encoded chain ID. Compare it against the value on the network page. If it matches, move on to a balance read:

curl -s -X POST https://your-rubyio-endpoint \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 2,
    "method": "eth_getBalance",
    "params": ["0xYourAddress", "latest"]
  }'

In JavaScript, the same check looks like this with a standard provider:

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://your-rubyio-endpoint");
const network = await provider.getNetwork();
console.log("chainId:", network.chainId.toString());

const block = await provider.getBlockNumber();
console.log("latest block:", block);

If eth_chainId succeeds but eth_getBalance fails, the problem is usually the address format or a method that the endpoint does not expose, not the connection itself.

Wallet configuration walkthrough

Adding RubyIO to a browser wallet or a mobile wallet follows the same pattern as any EVM-compatible network. You need a network name, the RPC URL, the chain ID, the currency symbol, and an explorer URL.

1. Open your wallet's network settings and choose to add a custom network.
2. Enter the network name exactly as it appears on the RubyIO network page.
3. Paste the RPC URL. If you are using a managed provider, this is the URL from your dashboard.
4. Enter the chain ID and currency symbol from the same page.
5. Save, then switch to the network and confirm your address and balance load.

If the balance shows as zero on a network where you expect funds, the most likely cause is that you are on the wrong chain ID or you pasted an endpoint for a different environment. Switch networks and reload before assuming funds are missing.

When to run your own node versus use a managed endpoint

This is the decision most teams get wrong early. Running a RubyIO node gives you full control over data, method availability, and request volume. It also means you own disk growth, upgrades, monitoring, and incident response. For a small team, that operational load is often larger than the application itself.

A managed RPC API removes that burden. You get an endpoint that is maintained for you, and you pay for the request volume you use. OnFinality provides RPC API access and dedicated node infrastructure across supported networks, so you can start on a shared endpoint and move to a dedicated node when your workload justifies it.

A simple rule: if your application is the product, use a managed endpoint. If your application is infrastructure that other teams depend on, and you need control over the exact node version and data retention, a dedicated node is usually the better fit.

Production readiness checklist

Before you point real traffic at any endpoint, including a managed one, work through this list.

• Confirm the chain ID and native currency against the RubyIO network page.
• Verify that the methods you depend on are actually enabled. Test each one, do not assume.
• Decide whether you need WebSocket subscriptions. If you do, confirm the endpoint supports them.
• Add a timeout and a retry with backoff around every RPC call.
• Log the raw JSON-RPC error code and message, not just a generic failure.
• Set up a health probe that calls eth_blockNumber on a schedule and alerts on stalls.
• Plan a failover endpoint so a single provider outage does not take down your app.

A monitoring probe can be as small as this:

async function probe(url) {
  const res = await fetch(url, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({
      jsonrpc: "2.0",
      id: 1,
      method: "eth_blockNumber",
      params: [],
    }),
  });
  const json = await res.json();
  return parseInt(json.result, 16);
}

Run it on a timer and record the block height. A height that stops increasing is the earliest signal that something is wrong, often before users notice.

Common failure modes and how to read them

Most RubyIO RPC problems fall into a small number of categories. Match the symptom to the likely cause before you change anything.

When you hit an error, capture the full JSON-RPC response. The error.code and error.message fields tell you whether the problem is your request or the endpoint. That single habit resolves most integration issues faster than any other change.

Key Takeaways

• RubyIO is a blockchain network with a JSON-RPC interface; the practical work is confirming chain settings and method support.
• Always verify the chain ID first. It is the fastest way to catch a misconfigured endpoint.
• Decide early between running your own node and using a managed endpoint; the operational cost usually favors a managed option for application teams.
• Add timeouts, retries, and a health probe before production traffic, not after an incident.
• OnFinality offers RPC API and dedicated node options; see RPC pricing and the supported RPC networks list for current coverage.

Frequently Asked Questions

What is RubyIO?

RubyIO is a blockchain network tracked in OnFinality's supported network catalog. It exposes a JSON-RPC interface that applications use to read state and submit transactions.

How do I find the RubyIO RPC endpoint?

Use the RubyIO network page for current chain settings. If you need a managed endpoint, OnFinality provides RPC API access across supported networks.

Why does my RubyIO RPC call fail with method not found?

That error usually means the method is not enabled on the endpoint you are using. Confirm method support for the network, then retry against an endpoint that exposes it.

Do I need a dedicated node for RubyIO?

Not necessarily. Start with a managed RPC endpoint and move to a dedicated node when your request volume, data retention needs, or control requirements justify it.

How do I monitor a RubyIO endpoint?

Poll eth_blockNumber on a schedule and alert when the height stops increasing. Combine that with error-rate logging on your application side.

Next steps

If you are still evaluating, start with the RubyIO network page to confirm settings, then review how to choose an RPC provider for evaluation criteria. If you are ready to connect, look at RPC pricing and the full supported RPC networks list, or explore dedicated node options if you need more control.