fomoscan vs fomoapi: Which FOMO Data API Fits Your Build

If you are building on fomo.family data, there is no official API, so you are choosing between independent data layers. fomoscan and fomoapi.io are the two most complete. Both read fomo.family and resell it over an API key. This is an honest look at what each is for and where each fits.

What fomoscan is

fomoscan is a real, established product built around identity resolution as its centerpiece. Its documented surface has three lines: an identity resolver (handle to wallet to userId, in both directions), a thesis feed of the written reasoning traders post, and leaderboards plus token boards sampled on a short cadence. It is a REST API with Bearer keys, and it is metered by compute units, with identity lookups being the most expensive call. If your build is mostly "given this handle or wallet, tell me who this is," fomoscan is squarely aimed at that job.

What fomoapi.io is

fomoapi.io covers the same identity, thesis, and leaderboard ground, and then extends past it into a fuller trading-data API. It resolves a handle to both wallets at once (Solana and EVM), returns PnL across four windows, and adds endpoints most builds end up needing: per-trader trade history, live balances (including perp PnL), token holders, unified search, a notifications feed, and a realtime WebSocket. It is metered by request rather than by compute unit, and it starts on a free tier.

Side by side

The rows marked "not documented" reflect what is absent from fomoscan's published API surface, not an assumed weakness. If fomoscan exposes more than its spec shows, treat those cells as unverified.

Where fomoapi.io wins for most builds

Four differences tend to decide it:

• Realtime. fomoscan's documented endpoints are polled (its leaderboards are sampled on a fixed cadence). fomoapi.io gives you a WebSocket at wss://api.fomoapi.io/ws/alerts so a copy-trading or alert bot reacts the moment a trade lands, not on your next poll.
• Breadth. Trades, balances, holders, search, and notifications are all first-class endpoints, so you rarely have to stitch a second source in. See the full picture in The FOMO Family API.
• Dual-chain in one call. GET /v2/users/{handle} returns both wallets.solana and wallets.evm, and the EVM address covers Robinhood Chain, Base, BNB Chain, and Ethereum.
• A free tier. A free key unlocks every endpoint plus 7 days of realtime, so you can validate the data against your own eyes before paying anything.

curl "https://api.fomoapi.io/v2/users/<handle>" \
  -H "authorization: Bearer YOUR_API_KEY"

When fomoscan may be the better fit

If your entire need is high-volume identity resolution and you are already invested in fomoscan's tooling, staying put is reasonable. Pick the tool that matches your build, not the loudest one.

If you want a full REST API with realtime streaming and a free key to start, that is what fomoapi.io is. Get a key at /dashboard, read the reference at /docs, and compare limits at /pricing.

FOMO API is an independent, unofficial data layer for fomo.family. It is not affiliated with, endorsed by, or sponsored by fomo.family, fomoscan, or Robinhood.