# Services from api.prereason.com on Zero > api.prereason.com 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/api.prereason.com Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.prereason.com/health.json ## Services - [PreReason - Bitcoin Factor Attribution API](https://www.zero.xyz/c/prereason-bitcoin-factor-attribution-api-b9742458/llms.txt): $0.03/call via x402. Returns a structured attribution breakdown of what is driving BTC price movements: macro factors, on-chain activity, or sentiment signals. - [PreReason Market Context API – BTC Quick Check](https://www.zero.xyz/c/prereason-market-context-api-btc-quick-check-4926921d/llms.txt): $0.01/call via x402. Returns a 60-second snapshot of Bitcoin price, 7-day trend, and key bullish/bearish signals via the btc.quick-check briefing. - [PreReason Cross-Asset Regime Classification API](https://www.zero.xyz/c/prereason-cross-asset-regime-classification-api-62ec9712/llms.txt): $0.03/call via x402. Classifies current cross-asset market regime, detects correlation breakdowns, identifies risk regimes, and surfaces divergence signals across asset classes. - [PreReason Bitcoin Miner Survival Index API](https://www.zero.xyz/c/prereason-bitcoin-miner-survival-index-api-bf552b74/llms.txt): $0.02/call via x402. Returns Bitcoin miner survival metrics including hash ribbon, production cost estimates, and energy pressure signals via the btc.miner-survival briefing. - [PreReason Market Context API – Bitcoin On-Chain Context (btc.context)](https://www.zero.xyz/c/prereason-market-context-api-bitcoin-on-chain-context-btc-context-c72f15da/llms.txt): $0.01/call via x402. Returns Bitcoin on-chain context including active addresses, transaction volume, and momentum signals for a given date. - [PreReason Cross Correlations - BTC vs Macro Correlation Matrix](https://www.zero.xyz/c/prereason-cross-correlations-btc-vs-macro-correlation-matrix-f723301b/llms.txt): $0.01/call via x402. Returns a correlation matrix showing how Bitcoin moves relative to SPY, DXY, and bond yields, with cross-asset signal analysis. - [PreReason Market Context API – Full Bitcoin Briefing](https://www.zero.xyz/c/prereason-market-context-api-full-bitcoin-briefing-5e363f1d/llms.txt): $0.03/call via x402. Returns a comprehensive Bitcoin context briefing combining on-chain metrics, macro data, energy/miner data, and cross-asset correlations in a single response. - [PreReason Macro Liquidity Deep Dive](https://www.zero.xyz/c/prereason-macro-liquidity-deep-dive-7198a255/llms.txt): $0.02/call via x402. Returns a detailed breakdown of macro net liquidity including Fed balance sheet decomposition, Treasury General Account (TGA), and Reverse Repo (RRP) dynamics with trend signals. - [PreReason - Bitcoin Corporate Treasury Context](https://www.zero.xyz/c/prereason-bitcoin-corporate-treasury-context-778e6213/llms.txt): $0.03/call via x402. Returns a structured briefing on public companies' Bitcoin treasury holdings aggregated from SEC filings and CoinGecko data. - [PreReason Market Breadth Context API (cross.breadth)](https://www.zero.xyz/c/prereason-market-breadth-context-api-cross-breadth-157ff7d4/llms.txt): $0.02/call via x402. Returns cross-asset market breadth signals, risk appetite indicators, and sector rotation context across asset classes. - [PreReason Bitcoin On-Chain Health API](https://www.zero.xyz/c/prereason-bitcoin-on-chain-health-api-7500ddd5/llms.txt): $0.02/call via x402. Returns Bitcoin on-chain health metrics including active addresses, MVRV proxy, and transaction data with trend signals. - [PreReason Market Context API – Macro Snapshot](https://www.zero.xyz/c/prereason-market-context-api-macro-snapshot-da270488/llms.txt): $0.01/call via x402. Returns a macro liquidity snapshot including Fed balance sheet, M2 money supply, Treasury yields, and net liquidity with trend signals. - [PreReason BTC Pulse Briefing](https://www.zero.xyz/c/prereason-btc-pulse-briefing-8b8def8a/llms.txt): $0.01/call via x402. Returns Bitcoin volume, transaction fees, and mempool activity with trend signals as a pulse-style market briefing. - [PreReason Bitcoin Energy Cost Analysis API](https://www.zero.xyz/c/prereason-bitcoin-energy-cost-analysis-api-6e353468/llms.txt): $0.03/call via x402. Returns Bitcoin production cost, hashprice, and energy pressure metrics for miners and market context - [PreReason Bitcoin 90-Day Momentum API](https://www.zero.xyz/c/prereason-bitcoin-90-day-momentum-api-a9bcf217/llms.txt): $0.02/call via x402. Returns Bitcoin 90-day momentum indicators including RSI-style trend strength and reversal signals for a given date. - [PreReason Bitcoin Grid Stress API](https://www.zero.xyz/c/prereason-bitcoin-grid-stress-api-216e115b/llms.txt): $0.01/call via x402. Returns Bitcoin grid stress analysis including epoch pace, difficulty adjustment forecasts, and miner pressure metrics as structured market context. - [PreReason Market Context API](https://www.zero.xyz/c/prereason-market-context-api-e831e9ab/llms.txt): $0.01/call via x402. Fetches AI-ready market context for a single Bitcoin on-chain, macro, or calculated financial metric, returning trend analysis, interpretation signals, and confidence scores. - [PreReason FX Liquidity Context API](https://www.zero.xyz/c/prereason-fx-liquidity-context-api-db1a5eff/llms.txt): $0.03/call via x402. Returns EUR/USD, CNY/USD, and DXY proxy rates with trend signals and FX liquidity context for macro analysis. - [PreReason BTC ETF Flows Briefing](https://www.zero.xyz/c/prereason-btc-etf-flows-briefing-9aace3a8/llms.txt): $0.02/call via x402. Returns Bitcoin ETF flow data, on-chain metrics, and macro context as a structured briefing for financial AI agents - [PreReason Market Context API - Treasuries Endpoint](https://www.zero.xyz/c/prereason-market-context-api-treasuries-endpoint-981db798/llms.txt): $0.03/call via x402. Returns Bitcoin treasury holdings data including corporate and miner BTC holdings, net changes, and a bullish/bearish market signal. - [PreReason Treasury Holdings Lookup](https://www.zero.xyz/c/prereason-treasury-holdings-lookup-0a65e40a/llms.txt): $0.02/call via x402. Returns corporate Bitcoin treasury data for a publicly traded company, including BTC holdings, accumulation trend, and company metadata. 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)