> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Lighter is a ZK-powered perpetuals DEX with verifiable on-chain order matching and liquidations.

Allium provides historical data for Lighter. The data is indexed directly from on-chain sources.

## Data Delivery & Interfaces

We offer the following delivery methods for historical data for Lighter.

<CardGroup cols="3">
  <Card title="Explorer" icon="crosshairs-simple" href="/app/overview">
    Via the Allium App or Explorer APIs (Historical Data)
  </Card>

  <Card title="Datashares" icon="server" href="/datashares/overview">
    Via Snowflake, Databricks, Google Cloud (Historical Data)
  </Card>

  <Card title="Datastreams" icon="arrow-progress" href="/datashares/overview">
    Via Kafka, Pub/Sub (Near Realtime Data)
  </Card>
</CardGroup>

<Note>
  **Historical Data Caveats**

  Lighter data is **not fully backfilled**. Raw (and derived DEX/Assets) data is available from the dates we started ingesting. See [Dataset Completeness (Earliest data available)](/historical-data/supported-blockchains/lighter/dataset-earliest) for the minimum timestamp per table.
</Note>

## Data Schemas

| Table Name                                     | Description                                                           |
| ---------------------------------------------- | --------------------------------------------------------------------- |
| `lighter.metrics.overview`                     | Daily metrics including volume, fees, open interest, and liquidations |
| `lighter.dex.trades`                           | All trades including voluntary trades, liquidations, and deleverages  |
| `lighter.dex.liquidations`                     | Liquidation events only                                               |
| `lighter.dex.order_books`                      | Flattened order book updates with bid/ask levels                      |
| `lighter.assets.perpetual_market_stats`        | Hourly perpetual market snapshots with prices, OI, and funding        |
| `lighter.assets.perpetual_market_stats_latest` | Latest snapshot per market                                            |
| `lighter.raw.trades`                           | Raw trade data                                                        |
| `lighter.raw.markets`                          | Market metadata                                                       |
| `lighter.raw.order_books`                      | Raw order book snapshots                                              |
| `lighter.raw.market_stats`                     | Hourly market stats                                                   |
| `lighter.raw.public_pool_data`                 | Public pool data                                                      |
| `lighter.raw.public_pool_info`                 | Public pool info                                                      |
| `lighter.raw.l1_mapping`                       | Account-to-wallet address mapping                                     |