# The dealer levels as JSON, for your own code.

> One read-only token opens FirmTape's levels to any script: the zero-gamma flip, the call wall, the put wall and net gamma of the volume book, with the open-interest book alongside, for SPX, the futures views and 123 tickers. The same numbers the terminal and the platform plugins draw.

Source: https://firmtape.com/features/live/levels-api

LIVE.

![An integration token created on the account page, masked, with the tokens list below it](https://archive.firmtape.com/press/features/data/tokens.0c320af6.webp)

**Why:** the levels as data, with their book and time, for a bot, a sheet or a dashboard of your own. **Where:** a token from Account, Integrations; the requests are on the [reference page](https://firmtape.com/docs/developers/live).

## How to use it

1. Create an integration token under Account, Integrations.
2. Send it as a bearer header with each request, as the reference shows.
3. Ask for up to twenty symbols at once: SPX, ES, NQ, RTY or any ticker on Symbols.
4. Add gamma by strike when you need the ladder, or the day's levels as a series.

## How to read it

- Each answer names the book and the time of the reading; a future also names its contract and basis.
- An unchanged reading answers with no body, so polling every few seconds costs little.

## What it measures

The volume book's zero-gamma flip, call wall, put wall and net gamma, with the open-interest book alongside. SPX's book is rebuilt every second; a ticker's every five minutes; ES, NQ and RTY are the index books moved by the day's basis.

## Limits

120 requests a minute per token. A revoked token or an ended plan stops working within a minute. Every field and error is on the [reference page](https://firmtape.com/docs/developers/live), with an OpenAPI document.

## Related

- [LIVE](https://firmtape.com/features/live)
- [LIVE: Integration tokens](https://firmtape.com/docs/live#integration-tokens)
- [LIVE: Platform integrations](https://firmtape.com/docs/live#integrations)
- [LIVE: Webhooks](https://firmtape.com/features/live/webhooks)

## Questions

**What does a request need?**

An integration token from Account, Integrations, sent as a bearer header. A tool that cannot set headers can pass it in the address, as the reference explains.

**How often can I call it?**

120 requests a minute per token. An unchanged reading answers with no body and does not count against the limit.

**Which symbols are covered?**

SPX, the ES, NQ and RTY views, and every ticker on Symbols, up to twenty in one request.

**Does it carry the measured book?**

No. The API carries the volume and open-interest books; the measured book stays in the terminal.

**Where are the field names and errors?**

On the reference page, /docs/developers/live, with an OpenAPI document a client can generate itself from.