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Exchange Demo

The Nexus Exchange demo is live at exchange.nexus.xyz.

The exchange is live and usable on testnet — authenticate via API, place orders, and trade across 32 perpetual futures markets.

The frontend displays live exchange state in read-only mode. All trading is conducted via the REST and WebSocket APIs.

Full API documentation is hosted at exchange.nexus.xyz/api-docs.

Getting Started

1. Authenticate

Sign in with your Ethereum wallet using an EIP-191 personal signature:

POST /auth/login

Sign the message "Sign in to Nexus Exchange" to receive a session token (24-hour TTL). Your account is created automatically on first sign-in.

2. Create an API Key

POST /keys

Returns an HMAC key pair (key_id + secret). The secret is shown once — store it immediately.

Manage keys with GET /keys (list) and DELETE /keys/{key_id} (revoke).

3. Deposit USDX

Fund your exchange account by depositing USDX:

POST /account/deposit

You need a USDX balance before you can place orders. Check your balance at any time via GET /account.

Each user can fund their account with 10,000 test USDX per day on the Exchange.

4. Place an Order

Authenticate all trading requests with three headers: X-API-Key, X-Timestamp, X-Signature.

See the API documentation for complete authentication examples and all available endpoints.

Markets

31 perpetual futures market pairs with USDX exist across crypto, FX and commodities.

Category
Assets
Max Leverage

Major Crypto

  • BTC / USDX

  • ETH / USDX

  • SOL / USDX

10x

Altcoins

  • AVAX / USDX

  • DOT / USDX

  • ADA / USDX

  • ATOM / USDX

  • NEAR / USDX

  • SUI / USDX

  • APT / USDX

  • TIA / USDX

  • SEI / USDX

  • INJ / USDX

  • LINK / USDX

  • UNI / USDX

  • AAVE / USDX

  • MKR / USDX

  • SNX / USDX

  • CRV / USDX

  • FIL / USDX

  • WIF / USDX

  • DOGE / USDX

  • ARB / USDX

  • OP / USDX

  • POL / USDX

10x

FX

  • EUR / USDX

  • GBP / USDX

  • JPY / USDX

10x

Commodities

  • GOLD / USDX

  • OIL / USDX

10x

Indices

  • SPX / USDX

  • NDQ / USDX

10x

All markets are denominated in USDX. Query all available markets via GET /markets/summary.

Analytics Dashboard

Real-time exchange telemetry exists at exchange.nexus.xyz/analytics:

  • Engine — fills/second, throughput, HTTP latency, resource utilization

  • Microstructure — cross-market spread, depth, imbalance, order book heatmap

  • Risk — account risk distribution, insurance fund flow, liquidation monitoring

  • Oracle — mark price divergence per market, feed status

  • Invariants — continuous correctness monitoring (fund conservation, OI symmetry)

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