Everything is free
No paid tiers. No subscriptions. Full mainnet access for every developer. y0 earns through affiliate kickbacks on swaps and bridges.
What you get
forever
- ✓MCP Server — all 10 tools (read + write)
- ✓All supported chains (mainnet)
- ✓Unlimited wallets & transactions
- ✓Signing via web, Telegram, mobile
- ✓Full review approval for every transaction
- ✓API key + usage dashboard
- ✓60 req/min rate limit (increase on request)
- ✓Community support
How y0 makes money
Same model as MetaMask — affiliate revenue on every transaction
Swaps
Affiliate kickbacks from 0x Protocol and 1inch. Users pay 0% — y0 earns from the protocol side.
Bridges
Affiliate revenue from LI.FI integrator program on every cross-chain bridge.
Fiat On-Ramps
Referral fees from MoonPay and Transak when users buy crypto with a card.
Why developers choose y0
Non-Custodial
y0 never holds private keys. All signing happens on the user's device. No money transmitter license needed.
AI-Ready Infrastructure
MCP server + SDKs let your AI agents interact with blockchains. No custom blockchain integration needed.
Open Core
MCP server, signing UI, and SDKs are MIT-licensed. Security-critical code is auditable by anyone.
15 Chains, 10 Tools
Ethereum, BNB, Arbitrum, Base, Polygon, Avalanche, Optimism, zkSync, Linea, Scroll, Blast, Gnosis, Mantle, Celo, Solana — swaps, bridges, sends, portfolio, and more.
Get started in 3 steps
Install MCP
Run npx y0-mcp@latest. Your AI agent gets instant access to all 10 tools on all chains.
Get API Key
Sign up at portal.y0.exchange. Get a free API key with full permissions — no credit card needed.
Build
Use read tools for data, write tools for transactions. Users approve on their own device.
Need enterprise features?
Dedicated infrastructure, SOC-2, SLA, or custom integrations? Let's talk.