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

# Purps

> Fully on-chain perpetuals DEX on Monad with factory-deployed markets

<Info>
  **Type:** Perpetuals DEX | **Docs:** [purps.xyz](https://purps.xyz)
</Info>

## Overview

Purps is a fully on-chain perpetuals DEX on Monad. Markets are deployed individually through a central factory contract, with each market being its own smart contract holding liquidity and position state. A shared `Router` contract handles trade execution and routing across markets.

Each Purps market supports long and short positions with on-chain funding rates that adjust based on the open interest imbalance between longs and shorts.

## Types

```typescript theme={null}
type PurpsMarket = {
  address: `0x${string}`
  asset: string              // index asset symbol, e.g. 'MON', 'ETH'
  openInterest: number       // total OI in USD
  fundingRate: number        // current hourly funding rate
  tvlUSD: number             // liquidity available in the market
  protocol: 'purps'
}
```

## Functions

### getPurpsMarkets()

Returns all active Purps markets by iterating the factory.

```typescript theme={null}
import { Rampart } from 'rampart-monad'

const sdk = new Rampart()
const markets = await sdk.getPurpsMarkets()
// → PurpsMarket[]

markets.forEach(m => {
  console.log(
    `${m.asset}: OI $${(m.openInterest / 1e6).toFixed(1)}M  ` +
    `TVL $${(m.tvlUSD / 1e6).toFixed(1)}M  ` +
    `Funding ${(m.fundingRate * 100).toFixed(4)}%/hr`
  )
})
```

### getPurpsTVL()

Returns the total liquidity across all Purps markets in USD.

```typescript theme={null}
const tvl = await sdk.getPurpsTVL()
// → number (USD)

console.log(`Purps total TVL: $${(tvl / 1e6).toFixed(1)}M`)
```

## Contract Addresses

| Contract | Address                                      |
| -------- | -------------------------------------------- |
| Factory  | `0xAfE4d3eB898591ACe6285176b26f0F5BEb894447` |
| Router   | `0x22aDf91b491abc7a50895Cd5c5c194EcCC93f5E2` |