> For the complete documentation index, see [llms.txt](https://ottodata.gitbook.io/ottodata-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ottodata.gitbook.io/ottodata-docs/what-is-otto.md).

# What is Otto?

## What is Otto?

Otto is the **machine-readable data layer for Robinhood Chain** ("Hood") — the Arbitrum Orbit L2 where tokenized stocks trade around the clock.

Deterministic collectors watch the chain and reference markets every minute. No LLM sits in the data path: every number is computed, not generated. The results are served three ways:

| Surface              | For       | URL                            |
| -------------------- | --------- | ------------------------------ |
| Web terminal         | Humans    | The Otto terminal              |
| REST + WebSocket API | Builders  | `https://api.ottodata.app`     |
| Hosted MCP server    | AI agents | `https://api.ottodata.app/mcp` |

### The flagship: Hood Basis

Tokenized stocks on Robinhood Chain trade 24/7. NASDAQ doesn't. Chainlink stock feeds **freeze outside market hours** while the tokens keep trading — so the on-chain price and the "real" stock price drift apart every night and every weekend.

Otto measures that drift, every minute, for 32 tickers:

* **`basis_bps`** — on-chain Chainlink price vs live NASDAQ reference (+ means the token trades at a premium)
* **`overnight_bps`** — on-chain price vs the last NASDAQ close (the overnight/weekend gap)

Nobody else publishes this dataset.

### Everything in the catalog

* **Basis feed** — 1-minute basis + overnight gap for 32 tokenized stocks ([concepts](https://ottodata.gitbook.io/ottodata-docs/concepts/basis-on-chain-vs-nasdaq))
* **Gap statistics** — per-ticker overnight and weekend premium/discount history
* **Pools & oracle deviation** — Uniswap (Hood) pool prices vs Chainlink, in bps
* **Whale flows** — large on-chain transfers, mints and burns of stock tokens + USDG
* **Reddit intel** — ticker alpha signals and market regime, joined against live basis
* **News events** — keyword-classified, importance-scored market news
* **Ottoscan** — every contract deployed on Hood since genesis
* **Risk feeds** — stablecoin depeg monitor, oracle-pause flags
* **Otto AI** — a chat endpoint that answers questions using the live data as tools

### Free during beta

No account, no API key. Just call it:

```bash
curl https://api.ottodata.app/v1/basis/snapshot
```

→ Continue to the [Quickstart](https://ottodata.gitbook.io/ottodata-docs/getting-started/quickstart).

{% hint style="info" %}
Otto is an independent project — not affiliated with, endorsed by, or sponsored by Robinhood Markets, Inc., Chainlink, or Uniswap. Nothing here is financial advice.
{% endhint %}


---

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