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Cross-Chain Bridge Route
x402
Cross-Chain Bridge Route is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
Returns the best cross-chain token bridge route via LiFi aggregator, including which bridge to use, estimated received amount, transfer time, fees, and a ready-to-send transaction.
Price / call$0.02
Success—
StatusUnknown
How this service works
Agents bridge across chains and get it wrong — bad route, an untrusted bridge, fees that eat the transfer. Returns the best cross-chain route via the LiFi aggregator: which bridge, how much arrives, est. time, gas + bridge fees in USD, and the ready-to-send tx. Chains: ethereum, base, arbitrum, optimism, polygon. Tokens by symbol (USDC/USDT/ETH/WETH/DAI) or a 0x address + amountUnits. A quote — re-quote with your own sender before executing; we never hold keys. Not financial advice.
Output
Returns the optimal bridge route including: the recommended bridge protocol (via LiFi aggregation), estimated amount received on the destination chain, estimated transfer time, gas fees and bridge fees in USD, and a ready-to-send transaction object. This is a quote only — the caller must re-quote with their own sender address before executing.
Example use cases
L2 arbitrage funding top-up
“I need to move 2000 USDC from my Base wallet to Arbitrum as cheaply as possible — what's the best bridge route, total fees, and how long will it take?”
DeFi yield migration
“I want to bridge 0.5 ETH from Ethereum mainnet to Optimism so I can deploy it in a yield farm there — can you find me the cheapest route with the lowest fees?”
Cross-chain gas sourcing
“I'm nearly out of MATIC on Polygon and want to bridge 100 USDC from Arbitrum over — what's the best route, how much will I actually receive after fees, and can you give me a transaction I can sign?”
Technical details
Endpoint
GEThttps://402.com.tr/api/x402/bridge-route?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to route a cross-chain token transfer across Ethereum, Base, Arbitrum, Optimism, or Polygon and wants a single aggregated best-route answer (bridge selection, fees, received amount, and a ready transaction) rather than querying multiple bridge UIs manually. Prefer this over generic DeFi routing when the goal is specifically cross-chain bridging, not same-chain swaps.
Side effects
- Unsupported chain pair — only ethereum, base, arbitrum, optimism, polygon are supported
- Unsupported token symbol — only USDC, USDT, ETH, WETH, DAI or valid 0x contract addresses accepted
- Amount too small — may fail if below minimum bridge threshold for the selected route
- No route found — LiFi aggregator finds no viable bridge path for the given pair and amount
- Missing required parameters (from, to, amount) — returns 400 error
- Stale quote — fees/amounts may change between quote and execution; always re-quote before sending
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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