# Peer Docs > Peer (app.peer.xyz) is a peer-to-peer marketplace connecting everyday payment apps (Venmo, Revolut, Wise, Cash App, PayPal, Zelle, and more) with onchain crypto, built on the ZKP2P protocol on Base. Payments are verified cryptographically via TEE-backed attestations; escrow is non-custodial. ## Agent-ready guides - [Onramp integration for LLMs](https://docs.peer.xyz/onramp-llm.md): self-contained guide to integrating the Peer onramp with @zkp2p/sdk - [Build a vault for LLMs](https://docs.peer.xyz/create-a-vault-llm.md): self-contained guide to creating and operating a rate-management vault ## User guides - [What is Peer?](https://docs.peer.xyz/guides/introduction/zkp2p) - [Buying crypto with Peer](https://docs.peer.xyz/guides/for-buyers/complete-guide-to-onboarding) - [Provide liquidity and sell USDC](https://docs.peer.xyz/guides/for-sellers/provide-liquidity-sell-usdc) - [Automated Rate Management](https://docs.peer.xyz/guides/for-sellers/automated-rate-management) - [Choose an Earning Strategy](https://docs.peer.xyz/guides/for-sellers/choose-an-earning-strategy) - [Run a vault](https://docs.peer.xyz/guides/for-vault-managers/run-a-vault) - [Order sizes and fees](https://docs.peer.xyz/guides/for-buyers/tiers) ## Developer - [SDK overview (@zkp2p/sdk)](https://docs.peer.xyz/developer/sdk) - [Client reference](https://docs.peer.xyz/developer/sdk/client-reference) - [Onramp integration](https://docs.peer.xyz/developer/integrate-zkp2p/integrate-redirect-onramp) - [Offramp integration](https://docs.peer.xyz/developer/offramp) - [Peer Cash SDK (@zkp2p/cash)](https://docs.peer.xyz/developer/peer-cash) - [React hooks](https://docs.peer.xyz/developer/sdk/react-hooks) - [React Native SDK](https://docs.peer.xyz/developer/sdk/react-native) ## Protocol - [ZKP2P protocol overview](https://docs.peer.xyz/protocol/zkp2p-protocol) - [V3 overview](https://docs.peer.xyz/protocol/v3/v3-overview) - [Smart contracts](https://docs.peer.xyz/protocol/v3/v3-smart-contracts) - [Deployments (contract addresses)](https://docs.peer.xyz/protocol/v3/v3-deployments) - [Attestation service](https://docs.peer.xyz/protocol/v3/v3-attestation-service)