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

# Introduction

Overview of mStable, its mission, and the **Stacked Yield** product.

#### What is mStable?

mStable is a protocol that delivers simple, tokenized yield products built on leading DeFi primitives. The goal is to make advanced yield strategies accessible through single ERC20 tokens that compound value automatically.

#### Mission

* Abstract DeFi complexity into easy-to-hold tokens.
* Provide stablecoin holders with enhanced yield.
* Build on proven, liquid systems and rotate between them as opportunities change.
* Enable scalability for everyday DeFi users, both large and small.

### Stacked Yield

**Stacked Yield** is mStable's flagship product. It is a single vault, actively managed by mStable, that deploys capital across supported yield markets to earn yield and uses leverage when profitable. Positions shift as opportunities change, so the docs describe what the vault is built to do rather than what it is holding at any given moment.

The current Stacked Yield token is **mPT-sUSDe**. For current positions, allocations, leverage, and APY, see the [vault page on mstable.com](https://www.mstable.com/vault/0xfec2adfa296fe189f53089fd5ccd8c28dd559cf2).

### Quick Start

#### Using Stacked Yield in 3 steps

1. **Acquire the token.** Buy **mPT-sUSDe** via the mStable app.
2. **Hold.** The token represents a position in the Stacked Yield strategy. No manual management required.
3. **Compound automatically.** The vault deploys capital into supported yield markets and rolls positions as needed. The token's value increases as yields are realized.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.mstable.org/docs/introduction.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.