0x Swap API on Solana Opens in Beta, With Kamino and Titan Already Routing

0x Swap API on Solana opened to all developers in beta on August 4, 2026, giving apps and wallets one endpoint that returns Solana DEX quotes and ready-to-sign swap instructions. Solana is the first non-EVM network 0x has supported after nine years of building onchain trading tools.

Two Solana products were already running on it before the public opened. Kamino, the largest lending protocol on the network, and Titan, a meta-aggregator that routes across other Solana aggregators, both routed trades through the closed beta.

Getting an API key is free through the 0x dashboard, and swap fees are waived as an introductory offer.

What does the Solana Swap API return?

One request to POST /solana/swap-instructions comes back with a quote, the route plan behind it, and the instructions to sign. There's no separate price call and no assembling the transaction yourself.

0x built the Solana version around settled outcomes rather than quoted ones, and publishes numbers for it. The company reports a 97.8% quote survival rate in simulation and a 2.2% revert rate in production, and says its routing performs best on trades between $10,000 and $100,000.

A quote that looks good and then reverts costs a user more than a slightly worse quote that lands, and aggregation on Solana competes on exactly that gap.

The API covers standard SPL tokens, native SOL, wrapped SOL, and Token Extensions (Token-2022) assets. Token Extensions are what make it awkward to route. A mint can charge a transfer fee or run a transfer hook, so the amount that arrives isn't always the amount sent, and a router that ignores that quotes a number the trade won't hit. Native SOL is handled without a separate wrap step, and associated token account creation is folded in.

Routing and transaction control

Two routing modes ship at launch. Multi-hop chains swaps through intermediate tokens when the direct pair is thin, and multi-plex splits one trade across several venues at once. Address Lookup Tables are supported so the longer multi-hop routes still fit inside Solana's transaction size limit.

0x also leaves the surrounding transaction open instead of handing back a sealed one. What you can control:

Room for your own actions. The API will hold back space so you can bundle something else into the same transaction as the swap.
Where the tokens land. Output can go to an address other than the one signing, so a swap and a payout settle together as one transaction.
Slippage tolerance. Set how far the price can move before the trade fails. The default is 0.5%.
Transaction fees and compute limits. These stay yours to set. The API doesn't lock them in for you.
Fee capture. Take a cut on either side of the swap, split across more than one recipient if you need it.

Fee capture is the commercial hook. Wallets and apps integrating the API can route their own revenue through it, which is the same monetization model 0x has run on EVM chains.

Why does another Solana router matter?

Solana is not short of swap routing. Jupiter has been the default for years, DFlow is established, and Titan already aggregates across that layer. A new API doesn't change what's possible on the network.

What it changes is integration cost for teams already on 0x. Swap API aggregates 373-plus liquidity sources across 20-plus EVM chains, so a team that has built against it can now add Solana without a second integration path or a second set of routing assumptions. 0x describes the Solana interface as matching the EVM experience, and for a multi-chain wallet that consistency is what's being bought.

The beta is limited to Solana Mainnet Beta, and the zero-fee period is introductory rather than permanent, so long-term pricing hasn't been announced yet.