# Liquidations · API reference · Femtos

> Perp liquidations, newest first, one row per account, coin and block. GET /v1/liquidations on HyperCore: parameters, response fields and a live call per layer.

- 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`. Free key: https://femtos.xyz/account/new (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/reference/liquidations

## Liquidations — GET `/v1/liquidations`

Perp liquidations, newest first, one row per account, coin and block.

Layers: HyperCore. Not on Elysium or HyperEVM: served on HyperCore only.
Page with live calls: https://femtos.xyz/reference/liquidations?layer=hypercore

| Param | In | Example or values | Meaning |
|---|---|---|---|
| `coin` | query | (optional) | One coin |
| `minNotional` | query | (optional) | Smallest notional (USD, decimal string) |
| `limit` | query | `50` | Rows |

```bash
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/liquidations?limit=50"
```

| Field | Type | Meaning |
|---|---|---|
| `events[]` | object | Newest first: {block, time, coin, user, side, method, trades, sz, notional, avgPx, markPx, entity} |
| `events[].side` | long \| short | Side of the liquidated position |
| `events[].method` | string | Liquidation path: market or backstop |
| `from` | ms | Start of the window read |

## Related (Liquidations & positions)

- [Liquidations stream](https://femtos.xyz/reference/ws/liquidations.md) `WS hc.liquidations`: Each liquidation fill, the block it happens. (HyperCore)
- [Liquidation stats](https://femtos.xyz/reference/liquidation-stats.md) `GET /v1/liquidations/stats`: Totals, per coin, per time bucket and the largest, over a window. (HyperCore)
- [Positions](https://femtos.xyz/reference/positions.md) `GET /v1/positions`: Open positions of one perp with leverage and liquidation price. (HyperCore)
- [Position changes](https://femtos.xyz/reference/ws/positions.md) `WS hc.positions`: Each perp position change, one per block, account and coin. (HyperCore)
- [Open interest](https://femtos.xyz/reference/positions-overview.md) `GET /v1/positions/overview`: Open interest, accounts and unrealized PnL per perp. (HyperCore)
- [Liquidation map](https://femtos.xyz/reference/liqmap.md) `GET /v1/positions/liqmap`: Notional that would be liquidated at each price around the mark. (HyperCore)

Every page: https://femtos.xyz/reference.md