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# Oracle deviation

## Oracle deviation

### Two prices for the same token

Every tracked stock token has:

* a **Chainlink oracle price** — authoritative, but frozen outside NASDAQ hours
* a **Uniswap pool price** — live 24/7, but only as good as the pool's liquidity

Otto reads both every \~5 minutes and publishes the difference:

```
dev_bps = (pool_px / chainlink_px − 1) × 10 000
```

```json
{
  "ticker": "NVDA",
  "pool": "0xb944cec30bd4175855215d767adc81f39e5f7e2b",
  "version": "v3",
  "quote": "USDG",
  "pool_px": 209.65,
  "chainlink_px": 209.68,
  "liquidity_usd": 46752.38,
  "dev_bps": -1.71
}
```

### Status thresholds

[`GET /v1/risk/oracle-deviation`](https://ottodata.gitbook.io/ottodata-docs/api-reference/pools-and-risk) attaches a status to each pool:

| Status    | Absolute deviation |
| --------- | ------------------ |
| `ok`      | < 100 bps          |
| `warning` | 100 – 500 bps      |
| `alert`   | > 500 bps          |

{% hint style="warning" %}
Always read `dev_bps` together with `liquidity_usd`. A 900 bps deviation in a $2k pool is noise — one small trade moves it. The same deviation in a deep pool is a real dislocation (or a genuinely stale oracle).
{% endhint %}

### When deviation is expected

* **Off-hours**: the oracle freezes, the pool keeps pricing news. Deviation here *is* the basis trade, seen from the DEX side.
* **Low liquidity**: thin pools drift on tiny volume.
* **Oracle pause**: if a token's `oracle_paused` flag is set (visible in the basis feed), the Chainlink leg is explicitly not updating.

Pool discovery covers Uniswap v3 `PoolCreated` and v2 `PairCreated` events since genesis, filtered to pools pairing a tracked stock token with a USD stablecoin.


---

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