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Swaps runs a dedicated stableswap protocol: stable-pair liquidity with pricing far tighter than general-purpose AMMs, live on Solana and five EVM chains. The Protocol Reference documents how to integrate it at the contract level — no API in the loop. This integration pattern is ideal for DEX aggregators, solvers, and routing infrastructure that route over on-chain liquidity directly rather than integrating via APIs: you quote and execute against the contracts yourself, keep full control of transaction construction, and plug the stableswap venues into your own routing graph like any other source. If you want quotes, routing, transaction construction, and tracking handled for you, use the Swap API instead — it routes through the stableswap protocol automatically (see the Stableswaps guide).

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Why route over the stableswap venues

  • Tighter stable pricing. Fees are set per pair, per direction, and refreshed continuously by an off-chain pricing keeper — not by a static curve.
  • Gas-free quoting. Read on-chain fee state (Solana) or call view quote functions (EVM) — quoting costs nothing and slots into any pricing loop.
  • Permissionless at default rates. No allowlist, no API key — integrate and route today.
  • Custom pricing for partners. Negotiated rates are delivered through Swaps-signed data: an Ed25519 router proof on Solana, per-recipient fee lookup on EVM. Reach out to us to get set up.
  • One protocol, both VMs. The same liquidity model on Solana and EVM, so one integration story covers six chains.

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API vs protocol integration

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Integrate the venues

Stableswap on Solana

The on-chain program: swap instruction, pair-state fees, and router proofs for custom pricing.

Stableswap on EVM

The GhostExchange contract: a quote-and-swap interface over cross-collateral pools on Ethereum, Arbitrum, Base, Polygon, and Binance.