Reliable cross-chain swaps with one integration

Let users move assets between chains directly from your app — no external bridges, wrapped tokens, or custodial risk.

Omniston is a bridge-free cross-chain execution layer by STON.fi. Integrate once to add native cross-chain swaps with built-in resolver liquidity, atomic settlement, and configurable partner fees.

Cross-chain swaps, without the bridge friction

Moving assets between chains still means routing users through bridges, asking them to manage wrapped tokens, or maintaining liquidity pools across networks. Every bridge adds custody risk. Every extra step loses users.

Omniston replaces that with a single execution layer — one integration that handles routing, settlement, and liquidity across all supported chains.

What you get with one integration

Native asset execution

Assets remain native, with no wrapped tokens or custodial bridge pools.

Trustless settlement

Assets are not held by a centralized intermediary during execution.

One integration across chains transactions

No need to combine separate bridge, routing, and settlement infrastructure.

Liquidity on demand

Resolvers supply destination liquidity per order. You don’t pre-fund balances or manage inventory across chains.

Built-in monetization

Set your own fee per transaction via RFQ — from 0.01 to 100 bps. Collected automatically in the destination asset by smart contracts.

How Omniston executes a cross-chain swap

User requests a cross-chain swap inside your app.

Omniston sends an RFQ to resolvers.

Resolvers return executable quotes.

Funds are locked in linked HTLC contracts across chains.

The swap settles atomically — or every party is refunded.

Built for wallets, exchanges, aggregators, and DeFi apps

Wallets

Let users swap across chains directly inside the wallet, with fewer steps and less bridge-related friction.

Aggregators & routing

Expand cross-chain coverage without building separate infrastructure.

Exchanges

Offer new cross-chain trading flows without pre-funding balances across multiple networks.

DeFi apps

Let users access assets from other chains without leaving your app.

Monetize every swap

You set your integrator fee via RFQ — from 0.01 to 100 bps per transaction.

Embedded in the quoted execution price. Users see one final output amount.

Collected in the destination asset.

Distributed automatically by smart contracts — no additional billing logic.

The protocol fee is set per asset pair. Your integrator fee is set by you. Both enforced at contract level.

Supported chains and integration paths

Live on:
TON · TRON· Ethereum · Base · BNB Chain · Polygon · Arbitrum · Avalanche · Robinhood
More chains rolling out in phases.

Your team gets

Quote and routing infrastructure

Resolver-provided liquidity

Cross-chain settlement logic

Configurable integrator fees

Technical support from the STON.fi team

SDK · API / RFQ endpoint · Widget · Infrastructure providers

Proven at scale

Omniston powers every swap on STON.fi — tens of millions of swaps representing billions in volume. Cross-chain runs on the same protocol.

Add cross-chain execution to your app

One integration. Native assets.
No bridge infrastructure to manage.

Got questions?

Fill cross-chain orders. Earn on execution.

Resolvers supply destination-side liquidity for Omniston swaps and compete on pricing and execution to win order flow. One integration, multiple chains.

Why become a resolver

All order flow, one integration

Serve every Omniston swap from a single resolver setup.

You set the price

Quote against RFQs; win the flow when your quote is best.

No bridge risk

Atomic settlement via HTLC — no half-completed swaps.

Capital where demand is

Provide destination liquidity on the chains you choose.

How it works

Omniston broadcasts an RFQ for an incoming swap.

You return a quote.

If yours wins, you lock destination liquidity in an HTLC.

The swap settles atomically — or every party is refunded.

Economics

Two-layer fee: protocol fee + integrator fee, configurable from 0.01−100 bps.

Embedded in the quote, distributed automatically at settlement.

Collected in the destination ("ask") asset.