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

> bb-defi.vercel.app serves 22 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/bb-defi.vercel.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/bb-defi.vercel.app/health.json

## Services

- [BaseBuilder DeFi DEX Price Impact Calculator](https://www.zero.xyz/c/basebuilder-defi-dex-price-impact-calculator-db6a871e/llms.txt): $0.068717/call via x402. Calculates the price impact of a trade on a decentralized exchange (DEX) given token pair and trade size
- [BaseBuilder DeFi Gas Price API – Polygon](https://www.zero.xyz/c/basebuilder-defi-gas-price-api-polygon-7cba59cc/llms.txt): $0.196001/call via x402. Returns current gas price data for the Polygon network to help users estimate and optimize transaction costs.
- [BaseBuilder DeFi Bridge Routes](https://www.zero.xyz/c/basebuilder-defi-bridge-routes-9fa06883/llms.txt): $0.168858/call via x402. Returns available cross-chain bridge routes for token transfers between blockchain networks
- [BaseBuilder DeFi DEX Trending Tokens](https://www.zero.xyz/c/basebuilder-defi-dex-trending-tokens-9d63d453/llms.txt): $0.114175/call via x402. Returns trending tokens or pools on decentralized exchanges (DEX) on the Base blockchain network
- [BaseBuilder DeFi Best Yield Pools Finder](https://www.zero.xyz/c/basebuilder-defi-best-yield-pools-finder-8d5518c5/llms.txt): $0.135008/call via x402. Finds and ranks the best-yielding DeFi liquidity pools based on submitted criteria
- [BaseBuilder DeFi New Pairs](https://www.zero.xyz/c/basebuilder-defi-new-pairs-0d5e446f/llms.txt): $0.104921/call via x402. Fetches newly created DEX trading pairs on Base chain, enabling discovery of fresh liquidity pools and token launches
- [BaseBuilder DeFi Ethereum Gas Price API](https://www.zero.xyz/c/basebuilder-defi-ethereum-gas-price-api-1da0ef9d/llms.txt): $0.149471/call via x402. Returns current Ethereum network gas prices (e.g., base fee, priority fee, or gas estimates) via a paid API endpoint
- [BaseBuilder DeFi Gas Price Predictor](https://www.zero.xyz/c/basebuilder-defi-gas-price-predictor-9e77c0d7/llms.txt): $0.10757/call via x402. Predicts Ethereum/Base network gas prices to help users time transactions for optimal cost
- [BaseBuilder DeFi Token Pairs](https://www.zero.xyz/c/basebuilder-defi-token-pairs-73e88af6/llms.txt): $0.094862/call via x402. Retrieves DEX token pair data for decentralized exchange analysis on Base chain
- [BaseBuilder DeFi Token Profile](https://www.zero.xyz/c/basebuilder-defi-token-profile-4acb0005/llms.txt): $0.190021/call via x402. Retrieves a detailed DeFi token profile including metadata, market data, and on-chain analytics for a given token on decentralized exchanges
- [BaseBuilder DeFi Bridge Swap Rate](https://www.zero.xyz/c/basebuilder-defi-bridge-swap-rate-de44e8f9/llms.txt): $0.145638/call via x402. Returns the current swap rate for bridging tokens across chains via the BaseBuilder DeFi bridge
- [BaseBuilder DeFi TVL Rankings](https://www.zero.xyz/c/basebuilder-defi-tvl-rankings-89130449/llms.txt): $0.14704/call via x402. Returns Total Value Locked (TVL) rankings for DeFi protocols, enabling comparison and discovery of leading DeFi platforms by locked capital
- [BaseBuilder DeFi DEX Pool Liquidity](https://www.zero.xyz/c/basebuilder-defi-dex-pool-liquidity-54fd039e/llms.txt): $0.119986/call via x402. Retrieves liquidity data for a specific DEX liquidity pool on the Base blockchain
- [BaseBuilder DeFi – Arbitrum Gas Price API](https://www.zero.xyz/c/basebuilder-defi-arbitrum-gas-price-api-68765ea5/llms.txt): $0.092834/call via x402. Returns current gas price data for the Arbitrum network
- [BaseBuilder DeFi Optimal Bridge Gas Estimator](https://www.zero.xyz/c/basebuilder-defi-optimal-bridge-gas-estimator-ab88e55e/llms.txt): $0.120765/call via x402. Returns the optimal bridging route and gas cost recommendation for cross-chain DeFi token transfers
- [BaseBuilder DeFi Gas Price API (Base Network)](https://www.zero.xyz/c/basebuilder-defi-gas-price-api-base-network-df9bc065/llms.txt): $0.171178/call via x402. Returns current gas price data for the Base network to support DeFi transaction planning
- [BaseBuilder DeFi Stablecoin Yield API](https://www.zero.xyz/c/basebuilder-defi-stablecoin-yield-api-630165f6/llms.txt): $0.110043/call via x402. Returns current stablecoin yield opportunities and APY data across DeFi protocols on Base
- [BaseBuilder DeFi Bridge Fees](https://www.zero.xyz/c/basebuilder-defi-bridge-fees-02ca515e/llms.txt): $0.122869/call via x402. Calculates cross-chain bridge fees for DeFi token transfers via the BaseBuilder DeFi API hub
- [BaseBuilder DeFi Protocol Risk Assessment](https://www.zero.xyz/c/basebuilder-defi-protocol-risk-assessment-7581d1a9/llms.txt): $0.092638/call via x402. Assesses and scores the risk profile of a DeFi protocol based on on-chain and off-chain signals
- [BaseBuilder DeFi Yield Hunting](https://www.zero.xyz/c/basebuilder-defi-yield-hunting-c5adaf3f/llms.txt): $0.143132/call via x402. Searches and ranks DeFi yield opportunities across protocols to identify the best current returns for a given asset or risk profile
- [BaseBuilder DeFi Yield Lending API](https://www.zero.xyz/c/basebuilder-defi-yield-lending-api-5c7ad00b/llms.txt): $0.064663/call via x402. Returns lending yield data and rates for DeFi protocols on the Base blockchain
- [BaseBuilder DeFi Yield Strategy](https://www.zero.xyz/c/basebuilder-defi-yield-strategy-64e8d2bc/llms.txt): $0.058414/call via x402. Generates or retrieves DeFi yield farming strategies based on user-specified parameters via a paid API endpoint.

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)