Blockchain And Crypto x402 offerings

Top DeFi yield pools with APY/TVL, filterable by chain (DefiLlama).

Current crypto prices for up to 25 coins (DefiLlama).

Crypto derivatives snapshot of one coin in one call: perp funding rates per exchange with predicted funding, open interest (OI) per venue, perp premium and the nearest futures basis, 24h liquidations and the long/short ratio. Venues: Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit, OKX. The derivatives data bundle for trading agents on BTC, ETH, SOL and more. Data only. Bad input is free; under 3 venues not charged.

Crypto ETF Sentinel — Activity feed of recent notable SEC filings and comment letters for US spot crypto ETFs (Bitcoin, Ethereum, Solana, XRP and more; last 60 days by default): S-1, 424B, 8-A12B, CERT, EFFECT and review correspondence, stage-filtered to drop trading-stage housekeeping. Use when a monitoring agent needs a 'what changed in crypto ETF regulation' heartbeat. Optional days and limit.

Crypto exchanges ranked by trust score: id, name, country, year established, trust score (1-10) and rank, 24h volume in BTC (and normalized), centralized flag and URL; limit 1-100 (default 25). Pass `exchange` (an id such as binance, gdax, kraken) for ONE exchange's profile instead: the same fields plus description, trade volume incl. and excl. wash-trade normalization, ticker count and social links. Cached in-process for 5 minutes. Use exchange-tickers for an exchange's markets.

Daily history of the crypto Fear & Greed Index (0 extreme fear, 100 extreme greed): average, max, min, days in each zone and trend, with the series. Alternative.me data.

Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.

Crypto Fear & Greed Index: the market Fear & Greed value, classification and trend, blended with aggregated crypto news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.

Crypto Fear & Greed Index: the market Fear & Greed value, classification and trend, blended with aggregated crypto news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.

Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.

Crypto market sentiment: the Fear & Greed Index (0=extreme fear, 100=extreme greed) with classification, plus optional history. Query: days (1-90, default 7). Use as a contrarian signal, regime filter, or risk gauge in trading loops.

The Crypto Fear & Greed index (0–100) with its rating, alongside the US stock Fear & Greed score for comparison, current BTC and ETH prices with 24h change, and ~90 days of crypto sentiment history. Pass `?days=N` to size the history. The crypto-sentiment companion to /api/v1/fear-greed (stocks). From x402stock, a market & economic data API (x402, USDC).

Crypto Fear & Greed Index (0-100) with classification. Data source: Alternative.me (attribution included in the response).

Crypto Fear & Greed Index: current reading (0-100, Extreme Fear to Extreme Greed) plus 7-day and 30-day sentiment trend (rising/falling/flat with the average and point change), not just a single snapshot number. Not ticker-specific. Data from alternative.me. $0.01/call.

Current gas price and latest block for Base or Ethereum mainnet, straight from public RPC. Fresh within 15 seconds. JSON response. $0.002 USDC per call, pay via x402, no API key.

Global crypto market snapshot: total market cap, total 24h volume, BTC dominance, ETH dominance, active coin count, active exchange count, and 24h market-cap change %. Returned in a chosen vs_currency (default usd). Data provided by CoinGecko.

Returns the latest global crypto market stats from CoinGecko.

Liquidations of one coin's perpetual futures: recent forced liquidations from the Gate, Bitfinex, dYdX, Deribit and OKX public feeds, long and short liquidations in USD per venue, the totals and the largest events over 1-24h. Liquidation data for BTC, ETH, SOL and more; Bybit, Hyperliquid and Kraken are listed as not covered (WebSocket only). Data only. Bad input is free; under 2 feeds not charged.

Market brief in one parameter-free call: BTC, ETH, SOL and XRP prices with 24h, 7d and 30d moves and rank, scheduled macro and crypto events in the next 48 hours, and short risk flags. Use as the opening call of a trading, portfolio or research agent loop. Refreshed every minute. JSON, no API key. $0.01 per call. Blockchain IQ.

Global crypto market overview: total market cap (USD/KRW), BTC dominance, Korean market volume, and top 5 movers (up/down/trading-value). Updated every 10 minutes.

Real crypto market data in one batched call: price, market cap, market-cap rank, 24h volume/high/low/change, circulating/total/max supply, and all-time-high with date -- for BTC, ETH, SOL, and 17+ other major coins by ticker. Richer than a plain price feed: most stock-data APIs' crypto tickers report null market cap. From CoinGecko. $0.005/call.

Real crypto market data in one batched call: price, market cap, market-cap rank, 24h volume/high/low/change, circulating/total/max supply, and all-time-high with date -- for BTC, ETH, SOL, and 17+ other major coins by ticker. Richer than a plain price feed: most stock-data APIs' crypto tickers report null market cap. From CoinGecko. $0.005/call.

Real-time global crypto stats: market cap, 24h volume, BTC/ETH dominance, and active coins.

Crypto market events detected live: bullish accumulation, potential breakout, distribution, capitulation and momentum exhaustion, with confidence and evidence. Use to react to market events as they form.