[ SUPANODE ]by hightower
// robinhood · rpc

Robinhood Chain RPC & WebSocket

Standard Ethereum JSON-RPC against Robinhood Chain, an Arbitrum Layer 2 with chain ID 4663, without the ceiling of the shared public endpoint.

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Robinhood · rpc● live
chain ID
4663
transports
HTTP + WS
01.WHAT'S INCLUDED// Robinhood · rpc
  • Standard Ethereum JSON-RPC methods
  • eth_subscribe: newHeads · logs · pending
  • Archive access for historical state
  • No shared public rate ceiling
  • Shared or single-tenant deployment
// factsSPEC
Interface
Ethereum JSON-RPC over HTTP and WebSocket
Subscriptions
newHeads · logs · newPendingTransactions
Chain ID
4663
Stack
Arbitrum Orbit rollup
Gas token
ETH
Archive
available
Auth
token, provisioned per subscription
Rate limits
quoted per subscription
Free trial
up to 24h, no card
02.HOW IT WORKS// request path
// HOW IT WORKS
Standard Ethereum JSON-RPC over HTTPS, so ethers, viem, web3.py, Foundry and Hardhat work on Robinhood after swapping the URL. Authenticated by your token at the gateway.
// BLOCK TAGS
Query against latest, safe, finalizedor an explicit block number — archive access covers state older than the node's recent window.
// NAMESPACES
The eth, net and web3 namespaces are on by default; debug and trace are enabled on request, since tracing is expensive to serve.
// DELIVERY PATH
your app
↓
x-token header
↓
robinhood.supanode.xyz
↓
Robinhood node
◆Rate limits are quoted per subscription rather than tiered. The endpoint host above is illustrative — the region is chosen when your node is provisioned.
03.FAQ// 5 questions
Is WebSocket billed separately?

No. It is the same node and the same credentials, approached from the other side - RPC is you asking, WebSocket is the node telling you - so it is one subscription, not two line items. A backend polling eth_getLogs every second is doing by hand what one logs subscription does by itself, at a fraction of the request budget.

Why pay for RPC when Robinhood publishes a free endpoint?

The public endpoint is rate limited and meant for wallet connectivity and testing. It is the right tool until a backend starts polling it, at which point the ceiling becomes the bottleneck. A provisioned endpoint removes the shared ceiling and adds archive access.

Do my existing Ethereum tools work?

Yes. Robinhood Chain is an Arbitrum Orbit rollup and fully EVM compatible, so ethers, viem, web3.py, Foundry and Hardhat work after swapping the endpoint URL and setting chain ID 4663. Gas is paid in ETH.

Can I query historical state?

Yes, archive access is available. For decoded history - Uniswap swaps and pools, token metadata, launchpad activity - the Robinhood Historical Data Indexer answers in SQL what would otherwise be thousands of RPC calls.

How is Robinhood Chain RPC priced and provisioned?

It is not on sale yet - shared Robinhood Chain RPC is in build. What is available today is the decoded-history indexer, which is live, and a dedicated node deployed to order. Tell us on Telegram what you need. Billing, when it opens, is the same as everything else here: crypto-only, monthly and prepaid.

Get Robinhood Chain RPC & WebSocket.

Set up over Telegram with an engineer — endpoint, token, tuning.

[ talk to us ]◀ Robinhood services