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Cross-Chain Bridge Rate Aggregator (LiFi Multi-Protocol)
x402
Cross-Chain Bridge Rate Aggregator (LiFi Multi-Protocol) is a paid API for AI agents from x402-deployer.x402-deployer.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).
Aggregates and returns best bridge rates across Across, Stargate, Hop, deBridge, Synapse, and CCTP for cross-chain token transfers
Price / call$0.03
Success—
StatusUnknown
How this service works
Cross-chain bridge rate aggregator. LiFi public quote API aggregates Across, Stargate, Hop, deBridge, Synapse, CCTP. Free, commercial-OK with attribution.
Output
Returns aggregated bridge quotes from multiple protocols (Across, Stargate, Hop, deBridge, Synapse, CCTP), including estimated output amount, fees, slippage, estimated transfer time, and the recommended best route ranked by cost or speed.
Example use cases
Cheapest USDC bridge to Avalanche
“I need to move 2000 USDC from Ethereum to Avalanche — can you check all the major bridge protocols and tell me which one has the lowest fees and what the estimated output amount will be after everything is taken out?”
Fastest ETH transfer to Polygon
“I want to bridge 1 ETH from Ethereum mainnet to Polygon as quickly as possible — compare Across, Stargate, Hop, and the others and let me know which protocol will get it there fastest and what it'll cost me in fees.”
Cheapest route from Base to Optimism
“I'm looking to move 500 USDC from Base to Optimism and I want the absolute cheapest route available — can you pull quotes from all the major bridges and rank them by total cost including fees and slippage?”
Technical details
Endpoint
POSThttps://x402-deployer.x402-deployer.workers.dev/bridge-ratesWhen to prefer
Use this endpoint when you need to compare bridge rates across multiple protocols simultaneously rather than querying each bridge API individually. Ideal for DeFi agents that need to route cross-chain transfers optimally by cost or speed, and when you want a single aggregated view covering the most popular bridge protocols including Across, Stargate, Hop, deBridge, Synapse, and CCTP.
Side effects
- Unsupported token/chain pair returns no quotes or empty results
- Invalid chain ID or token address returns a 400 error
- One or more underlying bridge protocols temporarily unavailable, resulting in partial quote set
- Amount too low for bridge minimums returns an error or filtered results
- Network congestion causes stale or delayed rate data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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