# Services from hars.cryptotavern.xyz on Zero

> hars.cryptotavern.xyz 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/hars.cryptotavern.xyz
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/hars.cryptotavern.xyz/health.json

## Services

- [HARS-Zero Signal URL Fetch & Content Extraction API](https://www.zero.xyz/c/hars-zero-signal-url-fetch-content-extraction-api-945db9c1/llms.txt): $0.001/call via x402. Fetches a URL and returns clean markdown content plus structured metadata (title, canonical URL, OG tags, content type, confidence score, and optional next-best-action hint) for AI agent consumption.
- [HARS-Zero Signal API – HTML Extraction Endpoint](https://www.zero.xyz/c/hars-zero-signal-api-html-extraction-endpoint-ad026708/llms.txt): $0.005/call via x402. Fetches a URL and extracts structured HTML fields (title, headings, links, paragraphs, images, metadata) into a machine-readable JSON object
- [HARS-Zero Signal API — Geocode](https://www.zero.xyz/c/hars-zero-signal-api-geocode-dabcb70a/llms.txt): $0.005/call via x402. Convert a free-text address or place name into latitude/longitude coordinates using OSM Nominatim, paying per call in USDC via x402.
- [HARS-Zero Signal API – Live FX Rate Lookup](https://www.zero.xyz/c/hars-zero-signal-api-live-fx-rate-lookup-0c7ebfa8/llms.txt): $0.005/call via x402. Returns a live foreign exchange rate for a currency pair, including a 24-hour sparkline, confidence score, and inverse rate, paid per call in USDC via x402.
- [HARS-Zero Signal API — Text Summarization](https://www.zero.xyz/c/hars-zero-signal-api-text-summarization-a4243264/llms.txt): $0.005/call via x402. Summarizes input text into 1–5 bullet points with named-entity extraction and a model-confidence score, paid per call in USDC via x402
- [HARS-Zero Signal API – Event Mispricing](https://www.zero.xyz/c/hars-zero-signal-api-event-mispricing-6fbe4229/llms.txt): $0.005/call via x402. Detects mispriced prediction markets on Polymarket by identifying events where implied probabilities appear misaligned with expected value
- [HARS-Zero Signal API – Polymarket Structured Feed](https://www.zero.xyz/c/hars-zero-signal-api-polymarket-structured-feed-7e407edd/llms.txt): $0.005/call via x402. Returns a structured feed of Polymarket prediction-market data and signals for AI agents, paid per-call in USDC via the x402 protocol.
- [HARS-Zero Historical Mispricing API](https://www.zero.xyz/c/hars-zero-historical-mispricing-api-733bc35c/llms.txt): $0.005/call via x402. Retrieves historical mispricing signals for Polymarket prediction markets, identifying past instances where market prices diverged from fair value
- [HARS-Zero Signal API – Depth Snapshot](https://www.zero.xyz/c/hars-zero-signal-api-depth-snapshot-1be4b2bf/llms.txt): $0.005/call via x402. Returns a depth snapshot of Polymarket prediction markets, providing order book and market intelligence data for AI agents.
- [HARS-Zero Signal API – Sentiment Snapshot](https://www.zero.xyz/c/hars-zero-signal-api-sentiment-snapshot-2337470e/llms.txt): $0.005/call via x402. Returns a snapshot of current Polymarket prediction-market sentiment, listing active markets and their counts for AI agent consumption.
- [HARS-Zero Whale Watch – Polymarket Whale Activity Monitor](https://www.zero.xyz/c/hars-zero-whale-watch-polymarket-whale-activity-monitor-ff657940/llms.txt): $0.005/call via x402. Returns a list of Polymarket prediction markets where large-wallet ('whale') activity has been detected, enabling AI agents to surface high-signal trading intelligence.
- [HARS-Zero Momentum Signal](https://www.zero.xyz/c/hars-zero-momentum-signal-654d829c/llms.txt): $0.005/call via x402. Returns Polymarket prediction-market momentum signals, surfacing markets with notable activity or directional movement for AI agent consumption.
- [HARS-Zero Signal API – Breaking Markets](https://www.zero.xyz/c/hars-zero-signal-api-breaking-markets-d6345463/llms.txt): $0.005/call via x402. Fetches Polymarket prediction-market intelligence, surfacing breaking or high-signal markets for AI agents via pay-per-call USDC payments.
- [HARS-Zero Signal API – Aggregated Polymarket Brief](https://www.zero.xyz/c/hars-zero-signal-api-aggregated-polymarket-brief-4defdb4c/llms.txt): $0.005/call via x402. Returns an aggregated intelligence brief of Polymarket prediction markets for AI agents, paid per-call in USDC via x402 protocol.
- [HARS-Zero Polymarket Market Brief](https://www.zero.xyz/c/hars-zero-polymarket-market-brief-e9d39407/llms.txt): $0.005/call via x402. Returns a concise AI-generated signal brief summarizing current Polymarket prediction market activity and trends
- [HARS-Zero Signal API – Historical Screener](https://www.zero.xyz/c/hars-zero-signal-api-historical-screener-d36929ae/llms.txt): $0.005/call via x402. Screens historical Polymarket prediction-market data to surface intelligence signals for AI agents, billed per call in USDC via x402.
- [HARS-Zero Signal API – Portfolio Analysis](https://www.zero.xyz/c/hars-zero-signal-api-portfolio-analysis-ba2f9d88/llms.txt): $0.001/call via x402. Returns Polymarket prediction-market intelligence and portfolio analysis for AI agents, paid per-call in USDC via x402
- [HARS-Zero Signal API – TradingView Export](https://www.zero.xyz/c/hars-zero-signal-api-tradingview-export-5051a04b/llms.txt): $0.005/call via x402. Exports Polymarket prediction-market data in a TradingView-compatible format for AI agents, paid per call in USDC.
- [HARS-Zero Signal API – Curated Polymarket Feed](https://www.zero.xyz/c/hars-zero-signal-api-curated-polymarket-feed-a15a7dc2/llms.txt): $0.005/call via x402. Returns a curated feed of Polymarket prediction market intelligence signals for AI agents, delivered via pay-per-call USDC micropayments.
- [HARS-Zero Signal API – Alpha Feed](https://www.zero.xyz/c/hars-zero-signal-api-alpha-feed-ab530620/llms.txt): $0.0017/call via x402. Returns Polymarket prediction-market intelligence data (active markets, signals) for AI agents, gated by pay-per-call USDC payment via x402 protocol.
- [HARS-Zero Signal API – Historical Momentum](https://www.zero.xyz/c/hars-zero-signal-api-historical-momentum-91c52c33/llms.txt): $0.005/call via x402. Returns historical momentum signals for Polymarket prediction markets, helping AI agents identify trending or momentum-driven markets
- [HARS-Zero Signal API – Strategy Report](https://www.zero.xyz/c/hars-zero-signal-api-strategy-report-4bf2be45/llms.txt): $0.0013/call via x402. Returns a strategy-level Polymarket prediction-market intelligence report including ranked markets, signals, and actionable insights for AI agents

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)