# Fomo Perps Supply-side fees Methodology

## 1. Overview

The share of transaction fees generated by Fomo Perps that is distributed to external service providers and underlying infrastructure operators, rather than being retained by the protocol, is measured by supply-side fees. For Fomo Perps, the portion of gross execution fees kept by the Hyperliquid L1 protocol as its protocol take, alongside any fee cuts allocated to market deployers on HIP-3 markets, is represented by this metric. The fee-sharing dynamics between the Fomo front-end interface and its underlying execution venue, Hyperliquid, are analyzed using this metric. Net revenue retained by Fomo is evaluated by isolating these supply-side costs.

## 2. Data sources

- **Blockchain events**: `node_fills` events from Hypercore, covering Hyperliquid

## 3. Step-by-step calculation

### Component A: Gross fee extraction

- **Purpose**: Capture of the total transaction fees generated by trades routed through Fomo Perps
- **Logic**: `node_fills` events from Hypercore are parsed where the builder address matches the Fomo builder address. Spot, outcome, and prediction markets are excluded by filtering out assets prefixed with `@` or `#`, or containing `/`. The gross `fee` field is summed for all fills settled in the USDC asset to calculate total fees.
- **Key fields**: `fee`, `builder`, `coin`, `fee_token`

### Component B: Protocol revenue extraction

- **Purpose**: Capture of the portion of fees retained by Fomo as protocol revenue
- **Logic**: The same filtered `node_fills` events from Hypercore are parsed. The `builder_fee` field, which represents the fee paid to the Fomo builder address, is summed for all fills settled in the USDC asset to calculate protocol revenue.
- **Key fields**: `builder_fee`, `builder`, `coin`, `fee_token`

### Component C: Supply-side fee calculation

- **Purpose**: Determination of the net fees distributed to the underlying infrastructure and market deployers
- **Logic**: Daily protocol revenue is subtracted from daily gross fees to determine the supply-side fees. This remaining amount, representing the Hyperliquid protocol take and deployer fees, is aggregated daily using UTC day boundaries.
- **Key fields**: `fees`, `revenue`

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Portion of fees distributed to service providers or supply-side participants.

Supply-side fees

DEX aggregators

Fomo earns a fee on every trade placed through the app. On perpetuals it acts as a Hyperliquid builder: each order placed from the app carries Fomo's builder code, and Hyperliquid routes a 0.05% builder fee per side to Fomo's builder address at trade time, on top of the venue's own fee and any HIP-3 deployer share. On spot swaps Fomo charges a platform fee collected in its own fee wallets; on cross-chain swaps routed through Relay, Relay collects Fomo's app fee and settles it as USDC to Fomo's fee collector on Base.

Fomo offers perpetual contracts on crypto, US equities, pre-IPO companies, indices and commodities through Hyperliquid's native markets and HIP-3 markets such as trade.xyz, alongside spot trading of memecoins and other tokens. The app is available on iOS, Android and the web at fomo.family.

Fomo is a mobile-first social trading app built by FOMO Labs, Inc., founded in 2025 by former dYdX employees. It combines a social feed, leaderboards and copy trading with self-custodial, gasless token swaps on Solana, Robinhood Chain, Base, BNB Chain and Monad, and since June 2026 perpetual futures executed on Hyperliquid. Fomo is operated as a private company; no token has been issued.

Fomo Perps

Supply-side fees

Supply-side fees

Chain breakdown