> For the complete documentation index, see [llms.txt](https://peanutprotocol.gitbook.io/peanut-protocol-docs-1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://peanutprotocol.gitbook.io/peanut-protocol-docs-1/learn/what-is-peanut.md). # What is Peanut? The Peanut App is the simplest way to send and receive crypto or fiat. Peanut lets you request, send, offramp and cash out digital dollars using links, QR codes, Peanut Protocol It uses secret-protected vault smart contracts. Secret-protected vault smart contracts hold the deposited token from the sender and can only be unlocked by a secret. It has a simple workflow. First, the sender deposits tokens to the vault smart contract, then they send the URL to their recipient, and finally the recipient withdraws the funds with the secret within the URL. You can use Peanut in the following ways: * The [SDK](/peanut-protocol-docs-1/integrate/using-the-sdk.md) * [Peanut App](https://peanut.to/send) * [Peanut Smart Contracts](/peanut-protocol-docs-1/integrate/integrate-directly-in-smart-contracts.md) It supports any token types. Including: native, ERC-20s, NFTs (ERC-721s and ERC-1155)! We also support 20+ different EVMs (ping us if you need us to add support for a new one). Some of Peanut Protocol's core features include: * [Multi-Token Links](/peanut-protocol-docs-1/integrate/using-the-sdk/create-claimlinks/create-multi-token-link.md) * [Raffles Links](/peanut-protocol-docs-1/integrate/using-the-sdk/create-claimlinks/create-raffle-links.md) * [Cross-Chain Links](/peanut-protocol-docs-1/integrate/using-the-sdk/claim/claim-cross-chain-link.md) * and much more! We are open source ([GNU GPLv3.0](https://github.com/peanutprotocol/peanut-contracts/blob/main/LICENSE.md)) and open to contributors.

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