Overview
Every on-chain transaction pays a network fee in the chain’s native asset, such as ETH on Ethereum or SOL on Solana. By default, the source vault account pays that fee, so it must hold the native asset alongside the tokens it sends. Funding many vault accounts with gas by hand is slow and error-prone. Fireblocks gives you two ways to remove that work.Which should you use?
For most use cases, use gasless transactions. Vault accounts send tokens without holding the native asset, so there is nothing to pre-fund. Use Gas Station for chains gasless does not cover, such as TRON, and for vault accounts that send the native asset itself.How they differ
They differ in whether the native asset ever reaches the source vault account.
You can use both: gasless transactions for token transfers, and Gas Station for the vault accounts that also send the native asset.
Scale the account that pays
A gasless relay and a Gas Station tank are each a single vault account that pays for many others. On EVM, each vault account has one nonce stream, so that account becomes a bottleneck during traffic spikes. To spread the load, select a Wallet Pool as the relay or as the Gas Station tank.In this section
- Gasless Transactions Overview: how gasless works and which mechanism each chain uses.
- EVM Gasless (Universal Gasless): set up a relay and Policy rules, then send gasless on EVM chains.
- Solana Gasless: set a fee payer and send SPL tokens without SOL.
- Work with Fireblocks Gas Station: how Gas Station fuels vault accounts, and its use cases.
Related
- Estimate Transaction Fee: estimate fees and set custom fees through the API.
- Boost Transactions: speed up a transaction that is stuck because its fee is too low.