Crypto & Blockchain

Full list of currency codes and names supported by Frankfurter (ECB set). No params; flat code-to-name object. Returns JSON.

Top live DeFi yields across all chains (DeFiLlama-sourced), TVL-filtered for safety and ranked by APY, with base vs reward split and 1-day APY change. Optional ?chain= and ?minTvl=. Replaces manual dashboard scanning. Returns JSON.

Cross-exchange perp funding divergence for BTC/ETH/SOL/XRP/DOGE across OKX, Hyperliquid, KuCoin: annualized funding per venue + the carry-arb spread (which venue to long vs short), ranked by opportunity size. A computed arbitrage signal. Returns JSON.

CRYPTO: all-time-high context — current vs ATH price, % below ATH, supply, beta (CoinPaprika). ?id=btc-bitcoin. Returns JSON.

Latest GDP per capita (current US$) for every country and region, one value each. No params. Returns JSON.

Annualized realized volatility (%) for BTC and ETH (Deribit) — options/risk signal. Live. Returns JSON.

Token security / rug-pull risk check for any ERC-20 (honeypot, mintable, owner privileges, tax, LP holders). Essential pre-trade safety check for trading agents.

Spot prices for one or more cryptocurrencies in any fiat/crypto quote currency. Comma-separated CoinGecko ids.

CRYPTO: Bitcoin blockchain vitals — 24h tx, blocks, block interval, on-chain USD volume, difficulty, supply (blockchain.info). Returns JSON.

Live Bitcoin fee estimates (sat/vB) + mempool size — on-chain congestion signal. Live. Returns JSON.

CRYPTO: OHLCV candles for any spot pair (OKX). ?instId=BTC-USDT&bar=1D (1m,5m,15m,1H,4H,1D,1W). Returns JSON.

Latest US Treasury average interest rates by security type — macro/yield signal. Live. Returns JSON.

Total value locked per blockchain, ranked — capital-flow signal across chains. Live. Returns JSON.

Top 24h gainers and losers among the top-250 coins by market cap. Live. Returns JSON.

World Bank annual GDP (current US$) time series for a country (ISO code, e.g. DE) Query: ?q= Returns JSON.

Latest price and daily change from Poloniex for a market symbol. Query: ?symbol= Returns JSON.

Live bikes available and open docks at every nextbike station in Leipzig, Germany, updated in real time; no params. Returns JSON.

CRYPTO: Bitcoin Lightning Network state — node/channel counts, capacity, Tor vs clearnet, fee rates (mempool.space). Returns JSON.

MARKETS: supported ISO 4217 currency codes and names (Frankfurter/ECB). Returns JSON.

Base species and evolutions in a Pokemon evolution chain (param id). Query: ?id= Returns JSON.

ECONOMICS: U.S. savings bond issuance/redemption piece counts by series. Returns JSON.

Latest trade price from MEXC for a symbol. Query: ?symbol= Returns JSON.

ECONOMICS: official U.S. government quarterly FX rates for federal reporting (?country=Euro Zone; omit for latest quarter, all currencies). Returns JSON.

Coins trending in search/interest right now (CoinGecko) — attention signal. Live. Returns JSON.