API reference · Market data
Forming candle
The forming candle, pushed once per block where it changes.
WebSocket channel elysium.candles on wss://api.femtos.xyz/v1/ws · WebSocket channel hc.candles on wss://api.femtos.xyz/v1/ws · WebSocket channel hyperevm.candles on wss://api.femtos.xyz/v1/ws
Parameters
| Param | In | Example or values | Meaning |
|---|---|---|---|
pair | filter | <pair> (Elysium); <evmPair> (HyperEVM) | Pool key: the pool address, or <PoolManager>:<PoolId> (V4, PancakeSwap Infinity); any case (Elysium, HyperEVM) |
tf | filter | 1s, 15s, 1m, 5m, 15m, 1h, 4h, 1d | Candle unit |
coin | filter | BTC | HyperCore market: BTC, @107 (spot), xyz:TSLA (HIP-3) (HyperCore) |
Subscribe
Elysium
{"op":"subscribe","channel":"elysium.candles","filter":{"pair":"<pair>","tf":"1m"}}HyperCore
{"op":"subscribe","channel":"hc.candles","filter":{"coin":"BTC","tf":"1s"}}HyperEVM
{"op":"subscribe","channel":"hyperevm.candles","filter":{"pair":"<evmPair>","tf":"1m"}}Key: Authorization: Bearer $FEMTOS_KEY. Get a free key, or with no browser through agent onboarding.
Response fields
| Field | Type | Meaning |
|---|---|---|
snapshot: true | Candle[] | last 300 candles at subscribe (Elysium, HyperEVM) |
data | WsCandle | the forming candle, once per block where it changes: {t, o, h, l, c, v, vq, n, vUsd, mcUsd, usd, mcap, …} (Elysium, HyperCore) |
snapshot: true | WsCandle[] | last 300 candles at subscribe (HyperCore) |
data | WsCandle | the forming candle: each candle that changed (while syncing: up to 50 per poll): {t, o, h, l, c, v, vq, n, vUsd, mcUsd, usd, mcap, …} (HyperEVM) |
Related: Market data
- Markets GET /v1/markets Elysium, HyperCore, HyperEVM
Every tradable perp, spot, HIP-3 and outcome market with 24 h stats. - Candles GET /v1/candles Elysium, HyperCore, HyperEVM
OHLCV of any HyperCore market down to 1 s, ascending, UTC-aligned. - Token candles GET /v1/candles Elysium, HyperCore, HyperEVM
OHLCV of a token through its USDC market (a perp coin: the perp). - Trades GET /v1/trades Elysium, HyperCore, HyperEVM
Latest fills of one market, newest first. - Trades stream WS elysium.trades · hc.trades · hyperevm.trades Elysium, HyperCore, HyperEVM
All trades of one market as they happen: raced between our node and Hyperliquid's public feed, first copy sent, the other dropped. - Order book GET /v1/book HyperCore
L2 book of one market with order counts, from our node. - Book stream WS hc.book HyperCore
Full-depth book, then the levels each block changes. - Best bid / offer WS hc.bbo HyperCore
Top of book of one market each block: raced between Hyperliquid's public feed and our node (newest block wins, our node corrects the same block). - Order updates WS hc.orders HyperCore
Every order status change, filterable by coin, user and status. - Token prices GET /v1/prices Elysium, HyperCore, HyperEVM
USD price of up to 100 tokens in one call, each with its source and provenance. - Price history GET /v1/prices/history Elysium, HyperCore, HyperEVM
USD closes per unit of up to 25 tokens over a window, or the price of 100 tokens at one time (at=). - HYPE price WS prices.hype HyperCore
HYPE from the Hyperliquid oracle, perp mark and exchanges. - Pool detail GET /v1/pools/{address} Elysium, HyperEVM
One pool: dex, fee, tokens, liquidity in USD, depth, 5m to 24h activity, top LPs. - Liquidity events GET /v1/liquidity Elysium, HyperEVM
Liquidity added to and removed from one pool, newest first. - Daily token volume GET /v1/volume Elysium, HyperEVM
USD swap volume of a token per UTC day, both sides of every priced swap.
More
- This page as Markdown
- The whole API reference
- What Elysium serves
- What HyperCore 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