Direct Route Linking
Link users directly to a pre-filled bridge route on the Across UI.
Across's frontend supports direct route linking — construct a URL with query parameters to drop users directly into a pre-filled bridge route. No API calls, no wallet connection required upfront.
How It Works
Append query parameters to the base URL to pre-select the origin chain, destination chain, and tokens:
https://app.across.to/bridge-and-swap?from=8453&to=42161&inputToken=BAL&outputToken=USDC
This opens the Across bridge with Base → Arbitrum selected and BAL → USDC as the token pair.
| Parameter | Description | Example |
|---|---|---|
from | Origin chain ID | 8453 |
to | Destination chain ID | 42161 |
inputToken | Input token symbol | BAL |
outputToken | Output token symbol | USDC |
All parameters are optional — use any combination.
For the full parameter reference, examples, chain ID table, and use cases, see the complete guide.