Relay link alternative for token buys on another network
The Unigox Trade API lets your users buy a token on another network with one stablecoin transfer, and refunds a failed buy on that network. Keep Relay for routes from Bitcoin or Solana, selling tokens back and self-serve keys.
When to stay with Relay
Your users pay from Bitcoin or hold no stablecoins
Relay routes from the major EVM chains and also from Bitcoin, Solana, TRON and TON. A Trade API buy is paid with a stablecoin the user already holds. A user holding bitcoin or another coin swaps it into a stablecoin first.
Users swap both ways or pay from a deposit address
Relay swaps tokens on one chain or across chains, in either direction. A deposit address lets a user end up with a different token just by sending funds, with no wallet connection or signature. A Trade API buy goes one way, from stablecoin to token, and the user always signs the transfer from their own wallet.
You want a key and a price list today
Relay hands out API keys in its dashboard, with per-key request history and webhooks, and publishes its platform fee for each kind of swap. Trade API access starts with a request, and Unigox agrees pricing and your revenue share before your team builds.
What changes when a Relay buy moves to the Trade API
Each row describes the same purchase: a user pays with a stablecoin on one network, and your contract calls buy a token on another.
| Topic | Relay | Unigox |
|---|---|---|
| How the buy runs | Your quote request carries the destination calls, with an ERC-20 approval first when the call spends a token. The user signs the deposit steps Relay returns, and a solver runs the calls with its own capital. | Your backend requests a quote and the user signs one stablecoin transfer. Unigox delivers the stablecoin on the destination network and runs your contract calls there, in order, in one transaction. |
| Gas | From an ordinary wallet the user pays origin gas in the chain's native coin. Gasless swaps and smart accounts serve users without it. Solvers pay destination gas and charge it inside the quote, with a $0.02 flat fee. You can sponsor destination fees from a balance you fund. | From an ordinary wallet the user also pays origin gas to send the transfer. The quote states the delivered amount, the destination gas charge and a deadline. |
| If the buy fails | Refunded on the origin chain to the refund address set on the quote, minus the refund's gas. With no refund address there is no automatic refund, and an amount smaller than the gas is not sent back. | A stablecoin refund to the receiver's address on the destination network, in full unless a failed execution used gas; that deduction never exceeds the quoted gas charge. |
| Pricing | Published platform fee: 0% on token bridges, 0.01% on stablecoin swaps, 0.06% on major swaps, 0.15% on other tokens. Execution and swap costs come on top. | No published price list. Pricing is agreed with you before you start; each quote states the delivered amount and the gas charge. |
| Your revenue | An app fee you add on top of each quote in basis points, accrued in USDC. Relay shares its own platform fee on swaps, never on token bridges, once you pass KYB and exceed $10 million in 30-day volume. | A share of trading revenue, agreed with you before the first purchase. |
| Networks and direction | Major EVM chains plus Bitcoin, Solana, TRON and TON; swaps in both directions. | Buying only, paid with a stablecoin the user holds. Asset and network pairs are confirmed with you during integration. |
| Access | Self-serve keys in the Relay Dashboard. Every quote/v2 request needs a key. | On request from the Trade API page. Unigox reviews your assets and networks and runs the first purchase with your team. |
UnigoxMove Relay call buys to the Trade API
Request access
Send the tokens and networks behind your Relay call buys from the Trade API page. Unigox confirms each pair and agrees your revenue share; your Relay integration keeps running meanwhile.
Rebuild your destination calls
Rebuild the approve and buy calls you send to Relay for the Unigox executor. Approve exact amounts and send no native value. The last call must deliver the bought token to your user: a token left in the executor is lost. A proxy contract that pulls from Relay's router must pull from the Unigox executor instead. Your app shows the price, gas charge and deadline, and the user signs the stablecoin transfer.
Change where refunds land
Relay pays refunds on the origin chain; the Trade API pays them to the receiver on the destination network. Update the screen that tells users where a failed buy's stablecoin goes.
Questions about a Relay link alternative
Which Relay link alternative fits a wallet's token buys?
The Unigox Trade API lets your users buy a token on another network with a stablecoin they already hold, and refunds a failed buy on that network. Relay covers more for bridging, selling tokens back to stablecoins and routes from Bitcoin or Solana.
See the Trade APIHow does the Relay link API compare with the Trade API?
Both take a quote request with your destination calls and return what the user signs. Relay's keys come from its dashboard and its fees are on its docs site; Trade API access, pricing and the asset and network pairs are agreed with Unigox first.
What does a wallet earn on Relay bridge volume?
Only the app fee it adds to each quote, which the user pays on top of Relay's price and which accrues in USDC. Relay's platform fee on token bridges is 0%, so bridge volume earns no revenue share. On swaps, Relay shares that fee only with KYB-verified integrators over $10 million in 30-day volume. Trade API partners earn a share of trading revenue agreed before they start.
Do I keep my Relay API key once buys move to the Trade API?
Yes. The two are separate integrations, and every Relay quote/v2 request needs a key. Keep the key for bridging, selling tokens back to stablecoins and routes from Bitcoin, Solana, TRON and TON. Send token buys paid in stablecoins to the Trade API.
Move the buys, keep Relay for bridging
Send the tokens and networks your users buy through Relay calls today. Unigox confirms each pair, agrees your revenue share and runs a first purchase with your team, while your Relay key keeps serving bridges and swaps.
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