Market · Ref Finance · constant product
$MUT / wNEAR
$MUT is the mutation fuel. It trades in a live Ref Finance simple pool. Drag the trade size below to move along the x · y = k curve; the quote is read from Ref's on-chain get_return. You can buy or sell right here: the native swap calls the Ref exchange contract directly, so it does not depend on Ref's frontend or its public RPC.
Pool #2946
0.25% FEEAMM curve playground
Trade the curve
Slider capped at 5% of the reserve for a readable curve. Type any amount.
Needs testnet NEAR for the swap amount, gas and one-time storage. About 0.030 NEAR of Ref storage is refundable; token storage is ~0.002 NEAR each. Your wallet asks for approval at each transaction.
The marker uses the fee-adjusted quote. The native swap asks your wallet for each step, then withdraws the output to your wallet. Pool details ↓
Live testnet DEX
The Ref market
The native swap above is the primary path: your wallet signs the Ref exchange calls directly, and our API only reads pool/account state. Ref Finance's own swap app is an optional external view; it has its own public-testnet notice and RPC status, and is not required for anything on this page.
How to get $MUT
The native swap wraps, deposits, swaps and withdraws for you. The pool is a real Ref simple pool — no custom adapter — and the first swap also registers your Ref account.
Where the mutation fee goes
Each roll costs 0 MUT. That is ≈ — wNEAR at the current spot. The burn and the vault royalty are verifiable on-chain.
Try the resting curve
A constant-product pool gets cheaper for buyers and more expensive for sellers as the reserve moves. The curve above is the whole market maker — no order book, no hidden inventory.