What Is vfat.io? DeFi Yield Aggregator, Sickle Wallet and Fees

vfat sits on top of existing decentralized exchanges. It does not run pools itself; it routes your money into pools on DEXs such as Aerodrome, Uniswap, PancakeSwap or Curve and stakes the resulting position in the pool's reward gauge ¹⁹. Background: yield farming and automated market makers.

The key piece is the Sickle. The first time you open a position on a chain, a factory contract deploys a Sickle smart wallet for your address on that chain ². Each later action runs through it as one batched transaction: swap your token into the two pool tokens, add liquidity, stake. The batching function only accepts calls from strategy contracts on vfat's on-chain registry, and those can only touch registered contracts ². That design limits what can run through your Sickle, but it also means you rely on vfat's registry and strategy code being correct.

Typical flow, based on vfat's docs ²⁹¹:

1. Connect a wallet at vfat.io (or paste an address to view a portfolio read-only).
2. Open Yield, filter pools by chain or protocol, and compare TVL and APR.
3. Deposit with the pool's tokens or with any other token; a swap is added if needed.
4. Track the position under Deposits, where you can harvest, compound, rebalance, withdraw or move it to another pool.

APR figures are estimates. Reward APR follows the pool's emission rate, which protocols such as Aerodrome reset weekly; fee APR is extrapolated from the previous seven days of swap fees, so it can change sharply ¹¹.

vfat offers four automations, enabled per position after a one-time "Automation" approval on each chain ⁴⁶:

• Auto-harvest: claims rewards when they exceed about $50, optionally converting them to another token ⁴.
• Auto-compound: reinvests rewards at a frequency vfat simulates from position size, APR and gas cost. You can't run it and auto-harvest on the same position ⁴.
• Auto-rebalance: for concentrated-liquidity positions that drift out of range, withdraws, swaps and re-opens a position of the same width. It is skipped when fees would not cover gas, which vfat says can mean positions under roughly $1,000 on layer-2s or $10,000 on Ethereum won't rebalance ⁵.
• Auto-exit: closes a position when price crosses a lower or upper trigger you set, working like a stop-loss or take-profit ⁶.

Automated actions can run without a new signature from you, inside the permissions you granted. You can switch Automation off per chain from the Sickle settings ².

vfat charges strategy fees on top of gas, DEX swap fees and slippage. As of October 2026 the docs list ³:

Part of the automation fee pays the gas for automated runs ⁴. An optional prepaid gas balance can cover runs when fee revenue is too low; it does not waive the fees ⁷. Some tokens also tax their own transfers, and a single zap can trigger that tax several times; vfat shows a warning but cannot detect every case ³. See gas fees and slippage.

Your assets sit in a Sickle you own, not in a pooled vault controlled by vfat ². Smart-contract risk still applies at two levels: vfat's Sickle and strategy contracts, and the DEX and gauge contracts your money goes into.

vfat publishes audit reports from yAudit (ten reports, June 2023 to May 2026), Ackee Blockchain (two, 2025) and Omniscia (January 2025) ⁸. The docs note that each audit covers only the code version in its scope, and that contracts carry risk regardless of audits ⁸⁹.

For selected protocols, vfat sells Bundled Protocol Cover: protection against protocol hacks for one specific Sickle position, priced at purchase, for 30, 60, 90 or 180 days, paid in USDC on Base, Arbitrum or Optimism ¹⁰. It does not cover other positions, and this profile did not review the policy wording.

Other risks are not fixable by vfat: impermanent loss, reward-token price falls, and pools or gauges that a DEX winds down.

vfat's docs carry a recovery notice for Velodrome users: bridges for xVELO on eight chains, including Mode, Lisk, Metal, Unichain, Fraxtal, Celo and Soneium, were scheduled for deprecation on October 15, 2026, with Lisk Velodrome positions also affected ¹³. The app shows a banner to wallets holding affected assets. The deadline came from Velodrome, not vfat, and later recovery is not guaranteed ¹³. Holders should check Velodrome's own notices.

Support runs on tickets opened inside an action pane and tied to the wallet that signed them; closed tickets are deleted after about 30 days ¹². Legitimate support never needs your seed phrase (phishing). Other features include a meta-aggregator swap and bridge page ¹⁶, a Telegram alert bot, a referral program that pays a share of referred users' fees ¹⁴, and an MCP server that lets AI assistants look up yields and prepare transactions ¹⁵.

vfat.tools is the older, text-based farming dashboard from the same brand. It lists pools and farms on dozens of chains as plain tables and links to vfat.io ¹⁸. vfat.io is the newer app, where Sickle-based deposits, automation and cover live ¹.