# Services from bbx-defi.vercel.app on Zero

> bbx-defi.vercel.app serves 12 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/bbx-defi.vercel.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/bbx-defi.vercel.app/health.json

## Services

- [BaseBuilder DeFi Price Impact Calculator](https://www.zero.xyz/c/basebuilder-defi-price-impact-calculator-543c68aa/llms.txt): $0.068717/call via x402. Calculates the price impact of a token swap on a decentralized exchange (DEX) given a trade size and token pair
- [Basebuilder2 DeFi — Arbitrum Gas Price](https://www.zero.xyz/c/basebuilder2-defi-arbitrum-gas-price-ffa4e6b7/llms.txt): $0.092834/call via x402. Returns current gas price data for the Arbitrum network to support DeFi transaction planning and cost estimation.
- [BaseBuilder DeFi DEX Pool Liquidity](https://www.zero.xyz/c/basebuilder-defi-dex-pool-liquidity-fc9b1541/llms.txt): $0.119986/call via x402. Fetches liquidity data for a specific decentralized exchange (DEX) pool on-chain
- [BaseBuilder DeFi Best Yield Pools](https://www.zero.xyz/c/basebuilder-defi-best-yield-pools-f5f2726e/llms.txt): $0.135008/call via x402. Returns the highest-yielding liquidity pools across DeFi protocols, ranked and filtered for optimal yield opportunities
- [BaseBuilder DeFi Bridge Fees](https://www.zero.xyz/c/basebuilder-defi-bridge-fees-93d7b33f/llms.txt): $0.122869/call via x402. Returns estimated bridge fees for cross-chain token transfers in DeFi
- [BaseBuilder DeFi Token Pairs Lookup](https://www.zero.xyz/c/basebuilder-defi-token-pairs-lookup-b69d8897/llms.txt): $0.094862/call via x402. Retrieves trading pairs for tokens on decentralized exchanges (DEX) given input token identifiers
- [BaseBuilder DeFi Bridge Swap Rate](https://www.zero.xyz/c/basebuilder-defi-bridge-swap-rate-a4407303/llms.txt): $0.145638/call via x402. Returns the exchange rate for swapping tokens across blockchain bridges in DeFi protocols
- [BaseBuilder DeFi Bridge Routes](https://www.zero.xyz/c/basebuilder-defi-bridge-routes-58273702/llms.txt): $0.168858/call via x402. Returns available cross-chain bridge routes for a given token transfer request in DeFi
- [BaseBuilder DeFi Stablecoin Yield API](https://www.zero.xyz/c/basebuilder-defi-stablecoin-yield-api-598198f1/llms.txt): $0.110043/call via x402. Returns current stablecoin yield opportunities and APY data across DeFi protocols on Base
- [BaseBuilder DeFi TVL Rankings](https://www.zero.xyz/c/basebuilder-defi-tvl-rankings-f0a3a6de/llms.txt): $0.14704/call via x402. Returns ranked list of DeFi protocols by Total Value Locked (TVL) on Base and other chains
- [BaseBuilder DeFi DEX Trending Endpoint](https://www.zero.xyz/c/basebuilder-defi-dex-trending-endpoint-7792559b/llms.txt): $0.114175/call via x402. Returns trending tokens or pairs on decentralized exchanges (DEX), surfacing what is currently popular or gaining volume on-chain
- [BaseBuilder DeFi Gas Price Predictor](https://www.zero.xyz/c/basebuilder-defi-gas-price-predictor-eb293346/llms.txt): $0.10757/call via x402. Predicts gas prices for Ethereum/EVM transactions using machine learning or heuristic models

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)