# Services from data.crestsystems.ai on Zero > data.crestsystems.ai 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/data.crestsystems.ai Live health (JSON, refreshed every minute): https://www.zero.xyz/host/data.crestsystems.ai/health.json ## Services - [Crest Crypto Token Prices](https://www.zero.xyz/c/data-crestsystems-ai-2083e06d/llms.txt): $0.002/call via x402, rated 5.0/5 (1 review). Fetches current prices and market stats for the top 25 cryptocurrencies by market cap, including price, 24h change, 7d change, market cap, and 24h volume. - [Crest Gas Oracle](https://www.zero.xyz/c/data-crestsystems-ai-2c796fa3/llms.txt): $0.002/call via x402. Fetches current gas price estimates (fast/standard/slow in gwei) across Base, Ethereum, Polygon, Arbitrum, and Optimism EVM chains - [Witnos Service Trust Scorer](https://www.zero.xyz/c/witnos-service-trust-scorer-ae7359a3/llms.txt): $0.5/call via x402. Scores an x402 service receiver address for trustworthiness using settlement census data, returning a SPEND/CAUTION/INVESTIGATE recommendation for counterparty due diligence before paying. - [Crest Token Detail](https://www.zero.xyz/c/data-crestsystems-ai-239d5147/llms.txt): $0.002/call via x402. Fetches comprehensive data for a single cryptocurrency token by CoinGecko ID, including price, market cap, volume, historical change percentages, ATH/ATL, and supply metrics. - [Crest Wallet Intelligence – x402 Behavioral Profile](https://www.zero.xyz/c/crest-wallet-intelligence-x402-behavioral-profile-834599ad/llms.txt): $0.9/call via x402. Returns a deep behavioral and spending profile for any EVM wallet address based on its x402 pay-per-request payment history on Base mainnet. - [Crest x402 Competitor Payer Intelligence](https://www.zero.xyz/c/crest-x402-competitor-payer-intelligence-b711f7b0/llms.txt): $1.2/call via x402. Returns detailed payer analytics and behavioral intelligence for a competitor's x402 service wallet on Base mainnet, including payer clusters, whale scores, revenue stats, and poaching opportunities. - [Crest DeFi Ecosystem Overview](https://www.zero.xyz/c/data-crestsystems-ai-fda9d279/llms.txt): $0.003000/call via x402. Fetches DeFi ecosystem data for a specific blockchain, returning total TVL and the top 10 protocols ranked by TVL with 24-hour change and category classification. - [Crest DeFi Yield Opportunities](https://www.zero.xyz/c/data-crestsystems-ai-4ea45767/llms.txt): $0.002/call via x402. Returns the top 20 DeFi yield opportunities ranked by APY, filtered to pools with over $1M TVL, including APY, TVL, project name, and chain. - [Crest Trending Tokens](https://www.zero.xyz/c/data-crestsystems-ai-e6f6629d/llms.txt): $0.002/call via x402. Fetches the top 15 trending cryptocurrencies ranked by search interest and trading volume, returning symbol, name, market cap rank, and BTC-denominated price. - [Crest Governance — Active DAO Snapshot Proposals](https://www.zero.xyz/c/data-crestsystems-ai-49bb2373/llms.txt): $0.002/call via x402. Returns the top 15 active DAO governance proposals from Snapshot with vote counts and choices - [Crest Block Info — Latest Block by Chain](https://www.zero.xyz/c/data-crestsystems-ai-903a93e1/llms.txt): $0.002/call via x402. Returns the latest block details (number, timestamp, hash, TX count, gas used) for a specified EVM-compatible blockchain. - [Crest DEX Pair Lookup](https://www.zero.xyz/c/data-crestsystems-ai-21605fe4/llms.txt): $0.002/call via x402. Returns real-time price, liquidity, and 24-hour volume data for a specific DEX token pair on a given blockchain via GeckoTerminal. - [Crest Crypto Exchange Rankings](https://www.zero.xyz/c/data-crestsystems-ai-a225e628/llms.txt): $0.002/call via x402. Returns the top 15 cryptocurrency exchanges ranked by trading volume, including trust score, 24-hour BTC volume, and country of origin. - [Crest Open Interest — Perpetual Symbol OI from Binance Futures](https://www.zero.xyz/c/data-crestsystems-ai-86aa26f0/llms.txt): $0.002000/call via x402. Returns the current open interest (in contracts) for a given perpetual futures symbol from Binance Futures. - [Crest NFT Collection Floor Price](https://www.zero.xyz/c/data-crestsystems-ai-ab83d8a3/llms.txt): $0.002/call via x402. Returns real-time NFT collection floor price in ETH and USD, market cap, 24h volume, number of owners, and total supply for a given collection slug. - [Crest Global Crypto Market Overview](https://www.zero.xyz/c/data-crestsystems-ai-171e8af2/llms.txt): $0.002/call via x402. Returns a global cryptocurrency market snapshot including total market cap, BTC/ETH dominance percentages, 24-hour trading volume, and active crypto count. - [Crest Mempool State](https://www.zero.xyz/c/data-crestsystems-ai-34637a69/llms.txt): $0.002/call via x402. Returns current Bitcoin and Base blockchain mempool state including pending transaction counts and Bitcoin fee histogram - [Crest Token Unlock Pressure](https://www.zero.xyz/c/data-crestsystems-ai-8280aadd/llms.txt): $0.002/call via x402. Returns the top 20 cryptocurrencies ranked by locked supply ratio (FDV vs market cap), indicating how much token supply is still locked and awaiting release. - [Crest Wallet Intelligence — EVM Wallet Behavioral Profiler](https://www.zero.xyz/c/data-crestsystems-ai-5fbf5895/llms.txt): $0.9/call via x402. Returns a deep behavioral profile of any EVM wallet's x402 agent-commerce activity on Base mainnet, including whale score, behavioral cluster, payment history, top services, risk assessment, and temporal patterns. - [Crest Stablecoins Overview](https://www.zero.xyz/c/data-crestsystems-ai-9f0acf58/llms.txt): $0.002/call via x402. Returns the top 15 stablecoins ranked by circulating supply, including peg type and number of supported chains. - [Crest Block Preview](https://www.zero.xyz/c/crest-block-preview-1d63ba6d/llms.txt): $0.002/call via x402. Fetches a preview of the latest block data for a specified EVM-compatible blockchain chain - [Crest x402 Service Trust Score](https://www.zero.xyz/c/crest-x402-service-trust-score-4344edc1/llms.txt): $0.5/call via x402. Returns a trust grade, trust score, and spend recommendation for any x402 service receiver address (EVM or Solana). 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)