Gasless Transactions

Gasless transactions allow certain swaps on Swap.io to be executed without the user needing to hold native gas tokens (for example SOL on Solana).

Instead of requiring the user to pay network fees directly, the transaction can be sponsored and submitted through Swap.io infrastructure, allowing the swap to proceed even if the wallet does not have the native token required for fees.

This improves accessibility and removes one of the most common friction points for new users.

Why Gasless Transactions?

Gasless execution helps solve a common problem in on-chain trading:

• Users may hold tokens but lack the native token required for transaction fees

• New users may not yet know they need to acquire gas tokens

• Wallet balances can become fragmented across tokens

Gasless transactions allow these swaps to proceed without requiring an additional step to acquire gas tokens first.

How It Works (High Level)

When a gasless transaction is available:

1. Swap.io prepares the swap transaction.

2. The transaction fees are sponsored by Swap.io infrastructure.

3. The user signs the transaction normally in their wallet.

4. The transaction is submitted to the network by the sponsor.

From the user's perspective, the swap proceeds normally without needing to hold the native gas token.

Availability

Gasless execution is not available for all swaps and may depend on several factors, including:

• supported networks

• supported tokens

• transaction size and complexity

• current infrastructure capacity

When available, the interface will indicate that a transaction can be executed gaslessly.

Basic Conditions for Gasless Execution

Gasless execution is available only when the following conditions are met:

• Gasless mode is enabled in the Swap.io interface.

• The wallet’s SOL balance is below 0.01 SOL.

• The swap size is at least $2 equivalent.

• A gas sponsorship fee equal to approximately 2× the network gas cost is deducted from the output token.

These conditions ensure that gasless transactions are used primarily when users cannot pay network fees directly, while still covering the cost of transaction sponsorship.

Additional rules, limits, and technical details will be documented as the feature evolves.

Notes

• Gasless swaps still execute fully on-chain.

• Users always sign transactions themselves — Swap.io never takes custody of funds.

• Certain limits or conditions may apply.

Full technical documentation will be published once the feature is fully released.