Aquarium
Aquarium is an account abstraction protocol on Cardano built by Fluid Tokens.
It enables gasless transactions through Babel Fees: users sign transactions and pay fees in native tokens, while sponsor pools ("Fee Tanks") cover on-chain ADA fees.
Outcomes
- Lower effective fees than direct wallet swaps (up to 2-5x according to the documentation)
- One-time and recurring programmable payments
- Conditional execution policies (time locks, NFT ownership checks, and multi-signature rules)
