# Services from markt.netzhandwerker.de on Zero > markt.netzhandwerker.de serves 21 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/markt.netzhandwerker.de Live health (JSON, refreshed every minute): https://www.zero.xyz/host/markt.netzhandwerker.de/health.json ## Services - [HALOWERK marktwerk Order Book](https://www.zero.xyz/c/halowerk-marktwerk-order-book-e205f605/llms.txt): $0.002/call via x402. Fetches a live order book (bids and asks) for a trading pair from a specified cryptocurrency exchange, with optional price-level grouping. - [HALOWERK marktwerk Slippage Estimator](https://www.zero.xyz/c/halowerk-marktwerk-slippage-estimator-3f77aa19/llms.txt): $0.004/call via x402. Estimates order slippage (and optionally taker fees) for a given trade size and direction on a specified crypto exchange's live order book - [HALOWERK marktwerk — Order Book Imbalance](https://www.zero.xyz/c/halowerk-marktwerk-order-book-imbalance-cfe172ae/llms.txt): $0.003/call via x402. Computes bid/ask imbalance metrics from a live order book for a given trading pair on a specified exchange, within a configurable price window around the mid price. - [HALOWERK marktwerk OHLCV Candles](https://www.zero.xyz/c/halowerk-marktwerk-ohlcv-candles-29324c90/llms.txt): $0.001/call via x402. Returns OHLCV candlestick data for a given trading pair from a specified exchange, with configurable interval and limit. - [HALOWERK marktwerk Cross-Exchange Price Comparator](https://www.zero.xyz/c/halowerk-marktwerk-cross-exchange-price-comparator-01fc4c3b/llms.txt): $0.003/call via x402. Compares live order book prices for a trading pair across up to 5 crypto exchanges, optionally computing executable average prices for a given order size. - [HALOWERK marktwerk — Trading Volume Anomaly Detection](https://www.zero.xyz/c/halowerk-marktwerk-trading-volume-anomaly-detection-e753d2af/llms.txt): $0.003/call via x402. Detects statistically significant volume anomalies in cryptocurrency trading pairs across major exchanges using robust z-score analysis. - [HALOWERK marktwerk Arbitrage](https://www.zero.xyz/c/halowerk-marktwerk-arbitrage-6c47139d/llms.txt): $0.006/call via x402. Calculates cryptocurrency arbitrage opportunities across multiple exchanges for a given trading pair and trade size - [HALOWERK marktwerk Stablecoin Peg Monitor](https://www.zero.xyz/c/halowerk-marktwerk-stablecoin-peg-monitor-439b7bfc/llms.txt): $0.003/call via x402. Fetches real-time stablecoin peg data (price, depth, deviation) across major crypto exchanges for specified stablecoins and peg band width - [HALOWERK marktwerk Open Interest](https://www.zero.xyz/c/halowerk-marktwerk-open-interest-9f17931b/llms.txt): $0.003/call via x402. Returns open interest data for a perpetual futures trading pair on Binance USDⓈ-M Futures, with comparison over a configurable time window. - [HALOWERK marktwerk – Futures Basis Endpoint](https://www.zero.xyz/c/halowerk-marktwerk-futures-basis-endpoint-31507608/llms.txt): $0.004/call via x402. Returns the futures basis (spread between futures price and spot price) for BTC or ETH dated futures on Deribit, across selected expiries and spot sources. - [HALOWERK marktwerk – Crypto Options Chain Lookup](https://www.zero.xyz/c/halowerk-marktwerk-crypto-options-chain-lookup-a2003bcf/llms.txt): $0.008/call via x402. Returns a filtered list of BTC or ETH options contracts from Deribit for a specified expiry and moneyness range - [HALOWERK marktwerk /snapshot — Crypto Market Snapshot](https://www.zero.xyz/c/halowerk-marktwerk-snapshot-crypto-market-snapshot-7198223a/llms.txt): $0.001/call via x402. Returns a real-time order book and price snapshot for a given trading pair from a specified (or auto-selected) crypto exchange. - [HALOWERK marktwerk – Perpetual Futures Funding Rate](https://www.zero.xyz/c/halowerk-marktwerk-perpetual-futures-funding-rate-48769613/llms.txt): $0.002/call via x402. Returns real-time funding rate data for a specified perpetual futures trading pair across one or more major crypto derivatives exchanges. - [HALOWERK marktwerk — Recent Trades Tape](https://www.zero.xyz/c/halowerk-marktwerk-recent-trades-tape-919c6358/llms.txt): $0.002/call via x402. Fetches the most recent spot trade executions (price, size, timestamp) for a given trading pair from a specified centralized exchange. - [HALOWERK marktwerk Liquidations](https://www.zero.xyz/c/halowerk-marktwerk-liquidations-85d46ca8/llms.txt): $0.004/call via x402. Returns aggregated perpetual futures liquidation volume for a given trading pair on OKX over a specified time window - [HALOWERK marktwerk – Breadth](https://www.zero.xyz/c/halowerk-marktwerk-breadth-8df0256f/llms.txt): $0.004/call via x402. Computes breadth indicators (advancing vs declining assets) across a configurable universe of crypto trading pairs over a chosen time window, with optional moving averages. - [HALOWERK marktwerk — Exchange Trading Hours Lookup](https://www.zero.xyz/c/halowerk-marktwerk-exchange-trading-hours-lookup-e3116e75/llms.txt): $0.002/call via x402. Returns whether a given stock exchange is currently open or its trading hours status at a specified instant in time. - [HALOWERK marktwerk Gas Cost Estimator](https://www.zero.xyz/c/halowerk-marktwerk-gas-cost-estimator-e13e0b25/llms.txt): $0.003/call via x402. Estimates the current gas cost in USD for a specific transaction type (transfer, ERC-20, or swap) on Ethereum or Base. - [HALOWERK marktwerk Bridge Activity Lookup](https://www.zero.xyz/c/halowerk-marktwerk-bridge-activity-lookup-a1b761e6/llms.txt): $0.004/call via x402. Returns bridge transaction volume and activity metrics for a specified L2/L3 blockchain chain over a 24-hour or 7-day window - [HALOWERK marktwerk Token Lookup](https://www.zero.xyz/c/halowerk-marktwerk-token-lookup-cc051d6e/llms.txt): $0.002/call via x402. Looks up on-chain token metadata and market data by contract address or symbol across EVM and non-EVM chains - [HALOWERK marktwerk /regime](https://www.zero.xyz/c/halowerk-marktwerk-regime-416313a1/llms.txt): $0.003/call via x402. Returns market regime classification (trend/volatility state) for a given crypto trading pair on a specified exchange and time horizon 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)