# Basebuilder2 DeFi — Arbitrum Gas Price

> Basebuilder2 DeFi — Arbitrum Gas Price is a paid API for AI agents from bbx-defi.vercel.app, paid per call via x402, $0.092834/call, status unknown (last checked 2026-10-12).

Returns current gas price data for the Arbitrum network to support DeFi transaction planning and cost estimation.

## Facts

- Endpoint: POST https://bbx-defi.vercel.app/api/gas/arbitrum?utm_source=zero.xyz
- Price: $0.092834/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder2-defi-arbitrum-gas-price-ffa4e6b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5EbPSj0t_d07hytO_Z6G3

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 basebuilder2-defi-arbitrum-gas-price-ffa4e6b7 -d '<json body>'
```

Example prompt: What's the current gas price on Arbitrum right now? I'm about to execute a DeFi swap and want to know if fees are low enough to proceed.

## When to prefer this

Choose this endpoint when you specifically need real-time gas price data for the Arbitrum Layer 2 network for DeFi use cases — particularly when integrating with other BaseBuilder DeFi endpoints or when your workflow is already using x402 micropayment rails. It is a cost-effective option at ~$0.09 per call for on-demand gas data without requiring an Arbitrum RPC node of your own.

## Known failure modes

- Network or RPC node unavailable — upstream gas data cannot be fetched
- Invalid or missing request body fields — 400 error
- Payment not completed or insufficient USDC — 402 error blocking access
- Arbitrum network congestion or outage causing stale or missing data
- Rate limiting if payment verification fails

## How this service works

BaseBuilder Defi API hub - 22 paid endpoints

## Output

Returns current gas price metrics for the Arbitrum network, likely including values such as base fee, priority fee (tip), and possibly fast/standard/slow tier estimates in gwei or wei units relevant to Arbitrum L2 transactions.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder2-defi-arbitrum-gas-price-ffa4e6b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bbx-defi.vercel.app](https://www.zero.xyz/host/bbx-defi.vercel.app/llms.txt)