y0.exchange
AI interface to your existing wallets

AI proposes. You sign.

Connect your AI agent to your MetaMask, Phantom, or any wallet. Swap, bridge, and manage your portfolio with natural language. You approve every transaction in your own wallet.

Get StartedFor Developers

Works with your AI

Windsurf
Cursor
Cursor
ChatGPT
ChatGPT
Claude
Claude

Plus LangChain, custom agents, and any MCP-compatible tool

The first MCP server for crypto wallets

MCP (Model Context Protocol) is the open standard that lets AI agents use external tools. y0 is the first MCP server that connects AI agents — Claude, ChatGPT, Cursor, Windsurf, LangChain — to real crypto wallets. Your AI can check balances, find the best swap routes across DEX aggregators, estimate gas fees, and propose transactions — all through natural language. The MCP server is open-source (MIT), free to use, and supports 10 tools across 15 blockchains. Install it with a single command. No API key required for read-only tools. Add your key to unlock swaps, bridges, and sends — all non-custodial, all signed in your own wallet.

MCP Tools

🖥️

get_balance

Check token balances across all chains

🔄

swap

Find best route and build unsigned swap tx

🌐

bridge

Cross-chain transfers via LI.FI

👛

send

Transfer tokens to any address

⚡

get_gas

Real-time gas estimates in USD

+ 5 more tools: get_portfolio, get_price, get_history, get_quote, approve. Full reference →

Add y0 Connector

Settings → Connectors → Add custom connector

Name: y0
URL:  https://mcp.y0.exchange/mcp?key=y0_your_key_here

Works on Claude Desktop, claude.ai, Claude Mobile, and ChatGPT. No install needed.

How it works

From your existing wallet to AI-powered trading in 3 steps

1

Connect your wallets

Link your MetaMask, Phantom, Trust Wallet, or any WalletConnect wallet. Add as many wallets as you want. Your keys stay with you — y0 never touches them.

2

Add connector to your AI

Generate an API key and add y0 as a connector in Claude, ChatGPT, or any AI app. Settings → Connectors → done. For developer IDEs (Cursor, Windsurf), add to your MCP config.

3

AI proposes, you sign

Tell your AI "swap 100 USDC to ETH". It finds the best route and sends it to your wallet. You review and approve.

Works with your wallets

M
MetaMask
P
Phantom
T
Trust Wallet
C
Coinbase Wallet
L
Ledger
W
WalletConnect

+100 more via WalletConnect

The Hub

A full-featured multi-wallet, multi-chain app — web and mobile, powered by AI.

📊

Portfolio Dashboard

Multi-chain balances, real-time prices, token breakdown — all your wallets in one view across Ethereum, BNB, Arbitrum, Base, Polygon, and more.

🔄

Best-Rate Swaps

Swap tokens with optimal routing via 0x aggregator. Compare quotes, set slippage, and approve in your wallet. No middleman fees.

🌉

Cross-Chain Bridge

Move tokens across chains in one click via LI.FI. Automatic route finding, real-time status tracking, and transparent fee breakdown.

⏳

Real-Time Approvals

Pending transactions from your AI agent appear instantly via WebSocket. Review details, check risk level, approve or reject — all in the Hub.

📜

Smart History

Full transaction history with filters by network, type, and date. Search by address or tx hash. Infinite scroll. Repeat any transaction as a Quick Action.

⚡

Quick Actions

Save frequent operations — send, swap, bridge — as one-tap templates. Create from scratch or from transaction history. Synced across all your devices.

More in the Hub

📇

Address Book

Save contacts with labels and notes. Auto-suggest when sending. Shared across Hub, Mobile, and Telegram.

🔑

API Key Management

Generate keys with granular permissions (read, swap, send, bridge). Monitor usage, revoke instantly. Setup guides for Claude, Cursor, and CLI.

🛡️

Security Controls

Set default slippage for all swaps. Maintain an address whitelist for trusted recipients. Every transaction requires your explicit review and approval.

🎨

Themes & Preferences

Dark mode, light mode, or system default. All preferences persisted locally — instant, no account needed.

All features are free. No signup required — just connect your wallet.

Try the Hub

Connect your wallet and start trading in seconds. Web and mobile. Free, non-custodial, no signup.

Open HubSee How It Works

Why y0

The only AI-to-crypto interface that is MCP-native, non-custodial, wallet-agnostic, and open-core

🤖

Any AI Agent

Works with Claude, ChatGPT, Cursor, Windsurf, LangChain, and any MCP-compatible AI. Your AI can check balances, find swap routes, and propose trades.

🔑

Your Wallet, Your Keys

y0 never stores or accesses private keys. All signing happens in your own wallet — MetaMask, Phantom, Trust Wallet, Ledger, or any WalletConnect wallet.

🌐

15 Chains

Ethereum, BNB, Arbitrum, Base, Polygon, Avalanche, Optimism, zkSync, Linea, Scroll, Blast, Gnosis, Mantle, Celo, and Solana. Best swap rates from 0x. Cross-chain bridges via LI.FI.

🔒

You Approve Everything

Every transaction requires your explicit review and approval. No transaction is ever executed without your confirmation. Full control, always.

📖

Open Source

MCP server and signing UI are MIT-licensed. Verify exactly what gets signed. No hidden code, no backdoors.

⚡

Zero Fees

Free for users and developers. No subscription, no swap markup. y0 earns from affiliate programs — not from you.

Security Architecture

Non-custodial by design

Private keysYour wallet only
Transaction signingYour wallet only
AI agent accessRead + propose
AI agent signingNever
y0 key accessNever
Platform fees$0

Frequently Asked Questions

Everything you need to know about y0

What is y0.exchange?
y0 is an AI interface layer for your existing crypto wallets. It connects AI agents (Claude, ChatGPT, Cursor, Windsurf) to your MetaMask, Phantom, Trust Wallet, or any WalletConnect-compatible wallet. Multi-wallet, multi-chain. The AI proposes transactions — you review and sign them in your own wallet. y0 never touches your private keys.
Is it a new wallet? Do I need to move my crypto?
No. y0 is NOT a wallet and does NOT compete with MetaMask, Phantom, or Trust Wallet. You keep using your existing wallets — connect as many as you want. y0 just adds an AI brain on top. Think of it as a unified dashboard for all your wallets, operated by AI.
How does it work?
You connect your wallet at app.y0.exchange, generate an API key, and add y0 as a connector in your AI app (Claude, ChatGPT) — just go to Settings → Connectors → Add custom connector. Now you can say "swap 100 USDC to ETH" in your AI tool — y0 finds the best route, builds an unsigned transaction, and sends it to the y0 app for your review. You approve — and the app calls your wallet to sign.
Is it safe? Who controls the keys?
You do. y0 never stores, accesses, or manages private keys. All signing happens in your own wallet on your own device. The MCP server and signing UI are open-source (MIT) so anyone can audit the code. y0 only builds unsigned transactions — it physically cannot move your funds.
Which wallets are supported?
Any wallet that supports WalletConnect: MetaMask, Phantom, Trust Wallet, Coinbase Wallet, Ledger, and hundreds more. If your wallet has WalletConnect, y0 works with it.
Which blockchains are supported?
Ethereum, BNB Smart Chain, Arbitrum, Base, Polygon, Avalanche, Optimism, zkSync, Linea, Scroll, Blast, Gnosis, Mantle, Celo, and Solana — 15 chains in total. The architecture supports adding any EVM-compatible chain.
What does it cost?
Everything is free — for users and developers. y0 earns through affiliate kickbacks from DEX aggregators and bridge protocols when you swap or bridge. You pay the same price you would going directly to the DEX. No subscription, no premium tier, no swap markup.
Is the code open-source?
Yes. The MCP server, SDKs, and signing UI are MIT-licensed and fully auditable. You can verify exactly what gets signed. Backend services (signing service, notifications) are proprietary.
What is MCP and how does y0 use it?
MCP (Model Context Protocol) is the open standard created by Anthropic that lets AI agents use external tools. y0 implements an MCP server that exposes 10 crypto tools — get_balance, swap, send, bridge, get_portfolio, get_price, get_gas, get_quote, get_history, and approve. When you install the y0 MCP server, your AI can interact with blockchains through natural language while you keep full control of signing.
What does non-custodial mean?
Non-custodial means y0 never holds, stores, or has access to your private keys or seed phrases. There is no wallet on our servers. All signing happens in your own wallet (MetaMask, Phantom, Trust Wallet, Ledger) on your own device. y0 only builds unsigned transactions and sends them to you for review. This is an architectural guarantee, not a policy — the system is physically unable to move your funds.
Can I use y0 with Claude Desktop?
Yes. Open Claude Desktop → Settings → Connectors → Add custom connector. Enter your y0 URL with API key and you are ready. You can ask Claude to check balances, find swap routes, send tokens, and bridge across chains — all through natural conversation. This also works on claude.ai and Claude Mobile.

Ready to try?

Connect your wallet, add a key to your AI, and start trading with natural language. Free, non-custodial, takes 2 minutes.

Open the HubRead the Docs