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Hyperliquid HyperEVM DEX

This is separate from Hyperliquid's main perp / HIP-3 / HIP-4 surfaces. It targets HyperEVM (chain ID 999), where Permit2 + ERC-20 routers power AMM-style swaps.

Endpoints

Artery	Returns
`GET /v1/hyperliquid/dex/chain-info`	chain ID, RPC URL, native HYPE token
`GET /v1/hyperliquid/dex/tokens`	curated HyperEVM token list

Planned additions:

GET  /v1/hyperliquid/dex/quote       → quote + Permit2 typed data + router calldata
POST /v1/hyperliquid/dex/swap        → user signs Permit2 + tx, Artery relays to RPC
GET  /v1/hyperliquid/dex/status/:tx  → poll confirmation

Why Permit2 (not approveAgent)?

Note

HyperEVM is a separate EVM chain. approveAgent is HL Core only — it delegates trading authority on the order-book exchange but does nothing for ERC-20 swaps. HyperEVM uses standard ERC-20 + Uniswap-style Permit2.

Architecture: routing through HyperSwap V3

Artery's HL DEX adapter targets HyperSwap V3 directly:

mermaidsequenceDiagram
  Client->>Artery: GET /quote (from, to, amount)
  Artery->>HyperSwap: read quoter / pool fees
  Artery-->>Client: { quote, permit2: {domain,types,message}, transaction }
  Client->>Wallet: sign Permit2 + tx
  Client->>Artery: POST /swap (sigs)
  Artery->>HyperEVM RPC: eth_sendRawTransaction
  Artery-->>Client: { txHash }
  Client->>Artery: GET /status/:tx (poll)

Aggregator integration (LiquidSwap, OKX DEX) is on the roadmap — when OKX adds chain 999 support we'll add it as a fallback route.

Slippage + deadline

Default 0.5% (50 bps) max slippage and 30-minute quote expiry. Override via ?slippage_bps= and the deadline encoded in the quote payload.

Warning

MEV protection — Artery does not route through Flashbots / private mempools. For large swaps, configure your client wallet to use a private RPC or wait for the planned MEV-Protect integration.

Bridge between HyperCore and HyperEVM

Artery currently assumes you already have HyperEVM balances. The Core ↔ EVM bridge (per-token system addresses 0x20...<tokenIndex>, HYPE special-cased to 0x2222...2222) is planned.

Edit this page on GitHubLast updated 2 days ago

Hyperliquid HyperEVM DEX#

Endpoints#

Why Permit2 (not approveAgent)?#

Architecture: routing through HyperSwap V3#

Slippage + deadline#