> ## 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.

# LST Overview

> All LST and yield vault protocols available on Monad through the Rampart

<Info>
  Rampart provides a unified interface to all LST protocols on Monad, covering native liquid staking, restaking vaults, yield-optimized wrappers, and multi-protocol yield aggregators.
</Info>

## Overview

Monad's liquid staking ecosystem lets holders earn staking rewards while keeping their MON liquid. Each LST protocol takes a different approach - from simple 1:1 staking to complex restaking vaults and yield aggregation. Rampart normalizes access to all of them through consistent TypeScript functions.

## Protocol Directory

| Token             | Protocol           | Type                 | APR    | TVL      | Key Function         |
| ----------------- | ------------------ | -------------------- | ------ | -------- | -------------------- |
| [aprMON](apriori) | aPriori            | Liquid Staking       | \~8%   | \~\$48M  | `getAPrioriLST()`    |
| [sMON](staking)   | Magma              | Liquid Staking       | \~7%   | \~\$30M  | `getAllLSTStats()`   |
| [gMON](staking)   | Kintsu             | Liquid Staking       | \~7.5% | \~\$25M  | `getAllLSTStats()`   |
| [shMON](staking)  | FastLane / Shmonad | Liquid Staking       | \~6.5% | \~\$15M  | `getAllLSTStats()`   |
| [vshMON](mellow)  | Mellow Finance     | Restaking Vault      | \~9%   | \~\$19M  | `getMellowVaults()`  |
| [lagMON](lagoon)  | Lagoon             | Yield Vault          | -      | \~\$2M   | `getLagoonVaults()`  |
| [upMON](upshift)  | Upshift            | Yield Aggregator     | -      | \~\$3M   | `getUpshiftVaults()` |
| -                 | Beefy              | Multi-Protocol Yield | -      | \~\$2M   | `getBeefyVaults()`   |
| [ezMON](renzo)    | Renzo              | Restaking Vault      | -      | \~\$500K | `getRenzoStats()`    |

## Aggregated Access

Pull stats from all LSTs in a single call using the LST aggregator:

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

const sdk = new Rampart()

// All 5 LSTs sorted by APR
const all = await sdk.compareLSTs()
// → [{ token: 'vshMON', apr: 0.09, protocol: 'mellow', ... }, ...]

// Highest APR LST right now
const best = await sdk.getBestLST()
// → { token: 'vshMON', apr: 0.09, protocol: 'mellow', tvl: 19000000, ... }

// Total MON staked across the entire ecosystem
const total = await sdk.getTotalStakedMON()
// → 137000000 (in MON)
```

## Architecture Notes

<Note>
  All LST functions are available both as standalone imports and as methods on the `Rampart` class. The `RampartAgent` exposes them as AI tools for use with the Vercel AI SDK.
</Note>

* **aprMON** - aPriori's ERC4626 vault; exchange rate increases as staking rewards accrue
* **gMON** - Kintsu uses a `uint96` rate stored on-chain; APR derived from 500k-block delta
* **shMON** - FastLane's validator MEV-boosted staking token; wrapped as vshMON by Mellow
* **vshMON** - Mellow vault holding shMON; adds a second yield layer on top of FastLane rewards
* **sMON** - Magma's straightforward liquid staking with competitive base APR