API reference, Bridges & wallets
Portfolio value history
- Elysium: Any address on Elysium: its total USD value per 5 min (1d), hour (7d) or day (30d, all).
- HyperEVM: Any address on HyperEVM: its total USD value per 5 min (1d), hour (7d) or day (30d, all).
- Not on HyperCore: HyperCore's perp account value over time is at GET /v1/hypercore/wallet/{address}/pnl (accountValue per hour or day)
GET https://api.femtos.xyz/v1/wallet/{address}/value
Parameters
| Param | In | Example or values | Meaning |
|---|---|---|---|
address | path | 0x876f1301aaa8452ceb98201cd4407fa9510a8181 (Elysium); 0x5a69a60ca8a4d189855b33bd9f1bbe71095c1039 (HyperEVM) | The address: 0x address, or a named wallet's handle |
layer | query | elysium (Elysium); hyperevm (HyperEVM) | EVM layer |
window | query | (empty), 1d, 7d, 30d, all | 1d (5 min points), 7d (hourly), 30d (daily) or all (daily, from the first balance) |
Example
Elysium
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/wallet/0x876f1301aaa8452ceb98201cd4407fa9510a8181/value?layer=elysium&window=7d"HyperEVM
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/wallet/0x5a69a60ca8a4d189855b33bd9f1bbe71095c1039/value?layer=hyperevm&window=7d"Key: Authorization: Bearer $FEMTOS_KEY. Get a free key, or with no browser through agent onboarding.
Response fields
| Field | Type | Meaning |
|---|---|---|
points[] | object | Oldest first: every bucket end of the window, then the indexed head: {t, block, usd, unpriced} |
points[].usd | decimal | null | USD value of the priced tokens held at that block, at the close of the bucket ending at `t`; null when a node read failed |
points[].block | int | Block the balances are read at: the last one before `t` (the head block for the last point) |
tokens[] | object | The tokens valued: {token, symbol, decimals, source, read} |
unpriced[] | object | Tokens held or moved in the window with no USD price history: never in `usd` (the first 50): {token, symbol} |
complete | boolean | false: points left out (see `from`), a token left out (`leftOut`) or a node read failed |
from | ms | null | First point |
billing | heavy | heavy with window all, else medium |
Related: Bridges & wallets
- Cross-layer wallet GET /v1/wallet/{address} Elysium, HyperCore, HyperEVM
One address (or a named wallet's handle) on HyperCore, HyperEVM and Elysium, plus its latest events. - Wallet stream WS wallet Elysium, HyperCore, HyperEVM
Every event of the three layers touching one address. - Wallet list stream WS wallets Elysium, HyperCore, HyperEVM
Every event of the three layers touching any of up to 100 addresses, in one subscription, each event tagged with its address. - HyperCore account GET /v1/hypercore/wallet/{address} HyperCore
One address's HyperCore account: perp value and margin, positions, spot balances. - Wallet open orders GET /v1/hypercore/wallet/{address}/orders HyperCore
One wallet's open orders: resting limit orders and trigger orders, on the main dex and every HIP-3 dex. - Wallet order history GET /v1/hypercore/wallet/{address}/orders/history HyperCore
One wallet's orders that left the book, newest first: how (filled, canceled, rejected) and why, the size filled and its average price. - Wallet fills GET /v1/hypercore/wallet/{address}/fills HyperCore
One wallet's HyperCore fills, newest first, with closed PnL, fees and the position before each. - Wallet fills per bar GET /v1/hypercore/wallet/{address}/fills/bars HyperCore
One wallet's fills on one market summed per bar: buys and sells with their average price, and the position after each bar. - Wallet funding GET /v1/hypercore/wallet/{address}/funding HyperCore
One wallet's funding payments, newest first: paid or received per perp and hour, with the position and the rate. - Swaps by wallet GET /v1/trades Elysium, HyperEVM
Every swap a wallet sent (or a pool’s, a token’s), newest first, filterable by token, side, size and time. - Transfers by wallet GET /v1/transfers Elysium, HyperEVM
ERC-20 transfers sent and received by a wallet, newest first, filterable by token, direction, size and time. - Wallet PnL GET /v1/wallet/{address}/pnl Elysium, HyperEVM
Any wallet on HyperEVM: per token balance, cost basis, realized and unrealized PnL, with 1d / 7d / 30d / all totals and win rate. - Wallet PnL curve GET /v1/hypercore/wallet/{address}/pnl HyperCore
One HyperCore wallet's PnL per hour or day: realized, fees, funding, net and cumulative, and its account value. - Wallet PnL stream WS pnl Elysium, HyperEVM
A wallet's positions and PnL on HyperEVM (GET /v1/wallet/{address}/pnl), pushed on subscribe, then the positions each block changes. - Was I sandwiched? GET /v1/wallet/{address}/mev Elysium
Every sandwich of a wallet’s swaps on Elysium: the bot, its two transactions, what the wallet lost. Free, no key. - Ledger stream WS hc.ledger HyperCore
Deposits, withdrawals, transfers and other non-trade balance moves. - Bridge movements GET /v1/bridges Elysium, HyperCore, HyperEVM
Matched HyperCore ↔ HyperEVM transfers with 24 h stats. - Bridge stream WS elysium.bridge | bridge.transfers Elysium, HyperCore, HyperEVM
Each HyperCore ↔ HyperEVM transfer, initiated then completed. - Bridge movements stream WS bridges.recent Elysium, HyperCore, HyperEVM
The GET /v1/bridges answer (movements newest first, 24 h stats), pushed on subscribe, then when a movement of the route changes state. - Bridge coverage GET /v1/bridges/coverage HyperCore, HyperEVM
Every HyperCore ↔ HyperEVM leg since our data starts, paired with its other leg: matched share per direction and token, why the others are not, latency.
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
Agent guide (agents.md)llms.txtOpenAPIMCP serverGet an API keyChangelog