bridge
Build an unsigned cross-chain bridge transaction via LI.FI.
Tier: Free
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
fromToken | string | Yes | Source token symbol or address |
toToken | string | Yes | Destination token symbol or address |
amount | string | Yes | Amount in human-readable units |
fromChainId | number | Yes | Source chain ID |
toChainId | number | Yes | Destination chain ID |
walletAddress | string | Yes | User’s wallet address |
Example
"Bridge 500 USDC from Ethereum to Arbitrum"Signing Flow
- MCP server calls signing service
/api/build/bridge - Signing service fetches bridge route from LI.FI
- Unsigned tx queued with bridge metadata
- User reviews source/destination chains, amounts, and signs
Notes
- Uses LI.FI aggregator for best bridge route
- Supports all chain combinations between the 5 supported EVM chains