Manage wallets, launch and trade tokens in the Nuxus app, trade from the sites you already use with the browser extension, and build your own product on the same engine. Nuxus prepares every transaction; users sign in their own wallets.
Secured by
Solana
BNB Chain
Ethereum
Base
Robinhood ChainStep 1 of 4Pick a network to see what the engine can build on it.
// network "solana:mainnet-beta", sent on every solana.* call
// engine wss://engine.nuxus.io/ws
// signing in your user's wallet, never on the engine
// Build methods on this network
// solana.transfer
// solana.associatedTokenAccount.createIdempotent
// solana.pump.swap
// solana.pump.createToken01 Platform
Use the Nuxus app, trade from the browser extension, or build your own product on the engine that runs both.
Nuxus app
Create or import wallets, follow live balances, launch tokens and trade from one place. Nuxus prepares each transaction and your browser signs it.
Browser extension
Pair the extension with your Nuxus account and trade Pump.fun tokens straight from Axiom and GMGN token pages with the Instant Trade panel.
For builders
The app and the extension run on the same platform your product can use.
02 Developers
The Transaction Engine that powers the app and the extension is yours to integrate, with Live Data for everything your product needs in real time.
Transaction Engine
One WebSocket endpoint, engine.nuxus.io/ws. Send JSON-RPC 2.0, get back unsigned v0 transactions, and hand them to whatever wallet your users already trust. The engine never holds their keys.
solana.solana.solana.solana.solana.solana.solana.solana.solana.solana.solana.market.solana.Live Data
Stream balances, confirmations, prices, wallet activity and social sources to your app over one connection. Live Data runs on its own capacity, separate from the engine.
| Day | Credits |
|---|---|
| Day 1 | 820 |
| Day 2 | 910 |
| Day 3 | 760 |
| Day 4 | 1,040 |
| Day 5 | 1,180 |
| Day 6 | 990 |
| Day 7 | 870 |
| Day 8 | 1,210 |
| Day 9 | 1,330 |
| Day 10 | 1,150 |
| Day 11 | 1,260 |
| Day 12 | 1,420 |
| Day 13 | 1,380 |
| Day 14 | 1,510 |
03 Pricing
Two meters, kept apart: transactions pay a percentage of volume, and live data is paid for in credits.
Engine
Live Data
USD equivalent of fee-bearing transactions.
Minimum 0.25%, the fixed Nuxus fee.
| Component | Rate | Amount |
|---|---|---|
| Nuxus fee, fixed | 0.25% | $2,500 |
| Your markup, all yours | 0.25% | $2,500 |
| Total fee paid by users | 0.50% | $5,000 |
Data creditsBilled separately for Live Data · not included above
How credits workTransaction fees only. Network fees and rent are chain costs, not Nuxus fees.
04 SDK
The TypeScript SDK wraps the engine’s JSON-RPC methods with typed requests, subscriptions and automatic reconnection. It has no runtime dependencies.
import { createClient } from '@nuxus/engine-sdk';
// Your signer, not part of the SDK: base64 unsigned v0 transaction
// in, { signedTransaction (base64), signature } out.
import { signWithYourWallet } from './your-signer';
const client = createClient({
url: 'wss://engine.nuxus.io/ws',
});
// 1. Build: the engine returns unsigned v0 transactions.
const plan = await client.solana.transfer({
network: 'solana:mainnet-beta',
sourceAddresses: [userAddress],
destinationAddresses: [recipient],
amountLamports: '50000000',
});
// 2. Sign on the user's device. Keys never reach the engine.
const signed = await Promise.all(
plan.transactions.map((tx) => signWithYourWallet(tx.unsignedTransaction)),
);
// 3. Broadcast the signed bytes.
const result = await client.solana.broadcastTransaction({
network: plan.network,
transactions: signed.map((s) => s.signedTransaction),
});The docs cover the architecture, a connection example and every engine method.