# One entity · HyperCore API · Femtos

> One named entity: its wallets on the three layers and 30 days of HyperCore trading.

- Base URL: `https://api.femtos.xyz/v1` (REST) · `wss://api.femtos.xyz/v1/ws` (WebSocket) · MCP: `https://api.femtos.xyz/mcp`
- Auth: `Authorization: Bearer $FEMTOS_KEY` (or `X-API-KEY: $FEMTOS_KEY`). Free key: https://femtos.xyz/accounts/ (browser), or with
  no browser: `GET https://femtos.xyz/accounts/agent/challenge`, solve its proof of work, then `POST https://femtos.xyz/accounts/agent/signup`
  (https://femtos.xyz/agents.md#agent-onboarding)
- Decimals are exact strings, times Unix milliseconds, addresses lowercase `0x`
- Whole API in one file: https://femtos.xyz/agents.md · OpenAPI: https://api.femtos.xyz/v1/openapi.json · Index: https://femtos.xyz/llms.txt
- Page with live calls: https://femtos.xyz/hypercore/entity

## One entity — GET `/v1/entities/{id}`

One named entity: its wallets on the three layers and 30 days of HyperCore trading.

| Param | In | Example or values |
|---|---|---|
| `id` | path | `abraxascapital` |

```bash
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/entities/abraxascapital"
```

| Field | Type | Meaning |
|---|---|---|
| `totals` | object | account value, open perps, spot and HyperEVM balances |
| `hypercore30d` | object | {fills, volume, realizedPnl, fees, netPnl, winRate} |
| `wallets[]` | object | each wallet: HyperCore account, HyperEVM / Elysium balances, recent moves |

## Related (Named wallets)

- [KOL leaderboard](https://femtos.xyz/hypercore/kols.md): KOLs, traders and funds ranked by their HyperCore PnL, volume and open positions.
- [KOL trades](https://femtos.xyz/hypercore/kol-activity.md): The latest fills of the named wallets, newest first, with who traded.
- [KOL stream](https://femtos.xyz/hypercore/ws-kols.md): Every fill, liquidation, EVM swap, transfer and bridge leg of a named wallet, live.
- [Named wallets](https://femtos.xyz/hypercore/entities.md): Every named entity, its X account, kinds, sources and wallets.

All HyperCore endpoints: https://femtos.xyz/hypercore.md