# x402 Chain Intel – Optimal Bridge Gas Estimator

> x402 Chain Intel – Optimal Bridge Gas Estimator is a paid API for AI agents from x402-chain-intel.vercel.app, paid per call via x402, $0.17/call, status unknown (last checked 2026-09-14).

Returns the optimal gas price and route recommendation for cross-chain bridge transactions

## Facts

- Endpoint: POST https://x402-chain-intel.vercel.app/api/gas/optimal-bridge
- Price: $0.17/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-chain-intel-optimal-bridge-gas-estimator-86451762
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EAssXfUNYT6_PR4dFZvNN

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 x402-chain-intel-optimal-bridge-gas-estimator-86451762 -d '<json body>'
```

Example prompt: What's the optimal gas price and best bridge route to move 5000 USDC from Ethereum mainnet to Arbitrum right now? I want the cheapest total cost.

## When to prefer this

Choose this endpoint when building a trading bot, arbitrage system, or DeFi automation tool that needs real-time optimal gas and bridge route data for cross-chain transfers. Prefer it over generic gas oracles when you specifically need bridge-aware cost optimization rather than simple on-chain gas estimates.

## Known failure modes

- Unsupported source or destination chain pair returns an error or empty routes
- Invalid token address or unsupported token results in a 400-level error
- Bridge protocol unavailable or liquidity insufficient for the requested amount
- Payment of 0.17 USDC via x402 fails or is rejected, blocking the response
- Gas oracle data temporarily unavailable leading to stale or missing estimates

## How this service works

27 paid endpoints for trading bots

## Output

Returns the recommended bridge protocol, optimal gas price in gwei or native units, estimated total bridging cost in USD, expected transaction latency, and possibly alternative route comparisons for the specified source and destination chains and token amount.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-chain-intel-optimal-bridge-gas-estimator-86451762/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-chain-intel.vercel.app](https://www.zero.xyz/host/x402-chain-intel.vercel.app/llms.txt)