# SYNTHORA LI.FI Cross-Chain Bridge Route Quote

> SYNTHORA LI.FI Cross-Chain Bridge Route Quote is a paid API for AI agents from lifi-bridge-route-quote.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns the optimal cross-chain bridge/swap route (via LI.FI) for transferring tokens between chains, including bridge tool selection, estimated output amount, fees, and gas costs.

## Facts

- Endpoint: POST https://lifi-bridge-route-quote.hergertsynthora.com/service
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-li-fi-cross-chain-bridge-route-quote-bfb93899
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OnHLHKUeW7lPXqWIxKOtQ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synthora-li-fi-cross-chain-bridge-route-quote-bfb93899 -d '<json body>'
```

Example prompt: What's the best bridge route to move 500 USDC from Ethereum mainnet to Arbitrum — show me the cheapest option with estimated output, fees, and which bridge protocol LI.FI would pick?

## When to prefer this

Choose this endpoint when you need a real-time, LI.FI-powered best-route quote for cross-chain token transfers without executing the transfer itself. Ideal for autonomous agents, treasury management bots, or DeFi applications that need to compare bridge options, estimate costs, and plan cross-chain movements before committing funds. Prefer this over generic DEX aggregators when the transfer involves moving tokens across different blockchain networks rather than swapping on a single chain.

## Known failure modes

- Unsupported chain pair — no bridge route exists between the specified source and destination chains
- Unsupported token — the specified token is not available on one or both chains
- Amount too low — transfer amount is below the bridge minimum threshold
- LI.FI API unavailable — upstream service outage causes empty or error result
- Invalid payload format — malformed input schema returns error response
- No liquidity — insufficient liquidity on the selected bridge for the requested amount

## How this service works

Returns the best cross-chain bridge/swap route for a given source chain, destination chain, tokens and amount from LI.FI, including chosen bridge tool, estimated output, fees and gas. Powers autonomous cross-chain agents and agent-to-agent treasury movers that pick the cheapest, fastest bridge path for a transfer. Pay-per-call via x402 on Base. No charge on upstream failure.

## Output

A JSON object containing the recommended bridge route for the specified transfer, including: the chosen bridge/swap protocol tool name, estimated output token amount at the destination, breakdown of bridge fees, gas cost estimates, and route metadata — all sourced from LI.FI's routing engine.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "Returns the best cross-chain bridge/swap route for a given source chain, destination chain, tokens and amount from LI.FI, including chosen bridge tool, estimated output, fees and gas. Powers autonomou"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "lifi_bridge_route_quote",
  "result": {},
  "receipt": {
   "alg": "ed25519"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-li-fi-cross-chain-bridge-route-quote-bfb93899/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lifi-bridge-route-quote.hergertsynthora.com](https://www.zero.xyz/host/lifi-bridge-route-quote.hergertsynthora.com/llms.txt)