MCP Tools Reference
y0 MCP server exposes 10 tools — 6 read-only and 4 write tools. All tools are available on every tier, including Free.
Read Tools
| Tool | Description |
|---|---|
get_balance | Native + ERC-20 token balances |
get_portfolio | Aggregated portfolio with USD values |
get_price | Real-time token prices via CoinGecko |
get_quote | Swap quote with routing preview |
get_gas | Gas prices with USD estimates |
get_history | Transaction history with classification |
Write Tools
| Tool | Description |
|---|---|
swap | Build unsigned swap tx via 0x/1inch |
send | Build unsigned transfer tx |
bridge | Build unsigned bridge tx via LI.FI |
approve | Build unsigned ERC-20 approve tx |
All write tools are non-custodial — they build unsigned transactions that get queued for user approval. y0 never signs transactions or holds private keys.