# Services from 4yearcycle.com on Zero

> 4yearcycle.com serves 12 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/4yearcycle.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/4yearcycle.com/health.json

## Services

- [TED Tender Monitor](https://www.zero.xyz/c/ted-tender-monitor-f116fa2c/llms.txt): $0.01/call via x402. Fetches EU public procurement tender notices from the official TED (Tenders Electronic Daily) v3 API, filtered by CPV code, country, and keywords over a configurable look-back window.
- [DeFi Yield Pool Aggregator via DefiLlama](https://www.zero.xyz/c/defi-yield-pool-aggregator-via-defillama-100aee4f/llms.txt): $0.02/call via x402. Returns top DeFi liquidity pool yields ranked by APY or TVL, with optional filtering by chain, minimum TVL, and stablecoin status.
- [Bitcoin News Headlines Search via GDELT](https://www.zero.xyz/c/bitcoin-news-headlines-search-via-gdelt-1cc034c5/llms.txt): $0.01/call via x402. Fetches deduplicated, recent news headlines matching a GDELT-powered full-text query, with filters for language, time window, and source country.
- [EVM Token Safety Analyzer](https://www.zero.xyz/c/evm-token-safety-analyzer-3c808f7b/llms.txt): $0.02/call via x402. Analyzes an EVM token contract address for security risks, honeypot status, tax rates, and other safety signals using GoPlus data
- [Gas Oracle — Multi-Chain Fee Estimator](https://www.zero.xyz/c/gas-oracle-multi-chain-fee-estimator-e281421f/llms.txt): $0.005/call via x402. Returns current gas fee estimates for Base, Ethereum, and/or Bitcoin networks in a single call.
- [ECB Foreign Exchange Rates API](https://www.zero.xyz/c/ecb-foreign-exchange-rates-api-e2e6af3d/llms.txt): $0.005/call via x402. Returns European Central Bank (ECB) euro foreign exchange reference rates for ~30 currencies, with support for non-EUR base currencies via cross-rates.
- [Web Search (Tavily-powered via 4yearcycle.com x402)](https://www.zero.xyz/c/web-search-tavily-powered-via-4yearcycle-com-x402-6d318ff4/llms.txt): $0.01/call via x402. Queries the live web via Tavily Search API and returns ranked results with titles, URLs, snippets, and relevance scores, plus an optional synthesized answer — payable per-call via x402.
- [EU CORDIS Research Projects Search API](https://www.zero.xyz/c/eu-cordis-research-projects-search-api-07584c36/llms.txt): $0.01/call via x402. Search and filter EU-funded research projects from the CORDIS database by topic, country, programme, and funding amount
- [Bitcoin Polar 4-Year Cycle — Pro Analyzer](https://www.zero.xyz/c/bitcoin-polar-4-year-cycle-pro-analyzer-b7d6e0b2/llms.txt): $0.01/call via x402. Returns live Bitcoin on-chain analytics including price, 200W MA, Mayer Multiple, RSI, MACD, Pi Cycle indicators, mempool stats, halving countdown, and difficulty data in a single JSON payload.
- [Bitcoin Derivatives Snapshot — Binance Futures Data](https://www.zero.xyz/c/bitcoin-derivatives-snapshot-binance-futures-data-3e12d912/llms.txt): $0.01/call via x402. Returns a real-time snapshot of Binance USDT-margined futures data including mark price, funding rate, open interest, and long/short ratios for up to 25 crypto symbols.
- [DWD Weather Forecast API (via 4yearcycle.com)](https://www.zero.xyz/c/dwd-weather-forecast-api-via-4yearcycle-com-427481be/llms.txt): $0.01/call via x402. Returns hourly weather forecasts for a given location using Germany's Deutscher Wetterdienst (DWD) MOSMIX data via the Bright Sky API
- [Live Aircraft Tracker — ADS-B Proximity Search](https://www.zero.xyz/c/live-aircraft-tracker-ads-b-proximity-search-1aed5928/llms.txt): $0.01/call via x402. Returns real-time positions and flight data for aircraft within a specified radius of a geographic coordinate using ADS-B surveillance data.

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)