API reference, Holders & tokens
Token transfers stream
- Elysium: The ERC-20 transfers of one token on Elysium, pushed as each block is indexed; min_usd or min_amount for whale alerts.
- HyperEVM: The ERC-20 transfers of one token on HyperEVM, pushed as each block is indexed; min_usd or min_amount for whale alerts.
- Not on HyperCore: HyperCore has no ERC-20 Transfer logs: an account’s transfers are in the wallet and hc.ledger streams
WebSocket channel elysium.transfers on wss://api.femtos.xyz/v1/ws | WebSocket channel hyperevm.transfers on wss://api.femtos.xyz/v1/ws
Parameters
| Param | In | Example or values | Meaning |
|---|---|---|---|
token | filter | 0xedb963ed6efe231f6327c87a42ed49abe2447afa (Elysium); 0x5555555555555555555555555555555555555555 (HyperEVM) | ERC-20 token address, any case. Native HYPE moves emit no Transfer log: follow WHYPE |
min_usd | filter | (optional) | Smallest USD value: amount × the token's current pool price (GET /v1/transfers' `usd`); unpriced transfers left out |
min_amount | filter | (optional) | Smallest amount, token units; transfers of unknown decimals left out |
Subscribe
Elysium
{"op":"subscribe","channel":"elysium.transfers","filter":{"token":"0xedb963ed6efe231f6327c87a42ed49abe2447afa"}}HyperEVM
{"op":"subscribe","channel":"hyperevm.transfers","filter":{"token":"0x5555555555555555555555555555555555555555"}}Key: Authorization: Bearer $FEMTOS_KEY. Get a free key, or with no browser through agent onboarding.
Response fields
| Field | Type | Meaning |
|---|---|---|
snapshot: true | TokenTransfer[] | the last 50 transfers of the token the filter shows (with min_usd / min_amount: among its last 1000), within the last 20,000 blocks, oldest first |
data | TokenTransfer | one transfer of the token (amount exact, `usd` at its current pool price, spam flag), pushed when the indexer commits its block; `"batch": "block"`: the transfers of one block in one frame: {block, t, tx, logIndex, token, symbol, decimals, from, to, amount, amountRaw, usd, …} |
data.usd | decimal | null | amount × the token's current pool price (not at the transfer); null unpriced |
data.amount | decimal | null | Token units |
Related: Holders & tokens
- Token registry GET /v1/coins Elysium, HyperCore, HyperEVM
HyperCore tokens with their HyperEVM contract and price. - Coin detail GET /v1/coins/{layer}/{id} Elysium, HyperCore, HyperEVM
One token: its links across layers, the markets it trades on, its 5 largest holders. - Token metadata GET /v1/tokens Elysium, HyperCore, HyperEVM
Metadata of up to 100 tokens: supply, creator, logo and socials when indexed, family, spam. Also POST with a JSON body. - Token overview GET /v1/tokens/{address} Elysium, HyperEVM
One token across all its pools: price, FDV, market cap, liquidity, windows, holders, top pools. - Token across layers GET /v1/tokens/{address}/lifecycle Elysium, HyperCore, HyperEVM
One token from its Elysium launch to its HyperEVM mirror, HyperCore spot and perps, each link proven or marked inferred. - Holders GET /v1/holders Elysium, HyperCore, HyperEVM
Spot balances of a HyperCore token, largest first. - Holders stream WS elysium.holders | hyperevm.holders Elysium, HyperEVM
The largest holders and holder count of a HyperEVM token (GET /v1/holders), pushed on subscribe and in the block that moves one of its balances. - Perp holders GET /v1/holders HyperCore
Largest open positions of a perp, long and short. - Holders history GET /v1/holders/history Elysium, HyperEVM
Holder count of an ERC-20 per day, and now. - Token families GET /v1/token-families Elysium, HyperEVM
Tokens whose balance moves without Transfer logs: Aave aTokens and debt tokens, stHYPE, xStocks. - Family token holders GET /v1/token-families/{token} Elysium, HyperEVM
Holders of one family token with balanceOf at the indexed head. - Token transfers GET /v1/transfers Elysium, HyperEVM
ERC-20 Transfer events of one token, newest first. - Token security GET /v1/tokens/{address}/security Elysium, HyperEVM
Honeypot check: a buy, a transfer and a sell simulated on our node, taxes, owner powers, holders and LP, with a verdict. - Top traders GET /v1/tokens/{address}/traders Elysium, HyperEVM
The wallets that traded a token over the last 1h, 6h or 24h, ranked by PnL or volume, with average prices and realized / unrealized PnL. - Spam tokens GET /v1/tokens/spam Elysium, HyperEVM
Tokens the indexer flags as spam, left out of every list, and the latest flag changes.
More
- This page as Markdown
- The whole API reference
- What Elysium serves
- What HyperEVM serves
- The whole API in one Markdown file
- OpenAPI 3.1 document
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