BTC-denominated exchange rates for 76 fiat currencies and crypto — real-time cross-rates via CoinGecko, no API key required.

Bitcoin network statistics: price, hash rate, daily tx count, block time, total supply mined — via blockchain.info, no API key.

Top coin categories ranked by market cap: DeFi, NFTs, L1, L2, gaming, etc. 24h change, volume, top 3 coins per category (CoinGecko, free, no key).

Blockchain TVL overview — all 469+ chains ranked by total value locked with token symbol and chain ID (DeFiLlama, free, no key).

Precious metals spot prices (Gold, Silver, Platinum, Palladium) in USD — real-time via gold-api.com, no API key required.

DeFi protocol TVL breakdown by chain, category, description, staking/borrowed TVL (DeFiLlama, free, no key). Covers 3000+ protocols.

Derivatives exchanges ranked by open interest in BTC — futures/perpetuals platforms with volume, pairs count, trust score (CoinGecko, free, no key).

ENS resolution: name->address (forward) or address->primary name (reverse). Ethereum mainnet.

Top CEX/DEX by trust score and 24h BTC volume (CoinGecko, free, no key). Exchange rank, country, year established, trading pairs count.

Identify an address: EOA vs contract, token standard (ERC20/721/1155), proxy, metadata.

Protocol fees and revenue ranked by 30d total — top earning DeFi protocols with 24h/7d/30d breakdown (DeFiLlama, free, no key).

Fiat FX rates + amount conversion over free public APIs (Frankfurter/ECB primary, open.er-api fallback, 160+ currencies). Fiat-to-fiat, distinct from crypto /price.

Current gas price + base fee for a chain, with an ERC20-transfer cost estimate.

DeFi global market overview: total DeFi market cap, ETH ratio, 24h trading volume, DeFi dominance, top DeFi coin via CoinGecko.

DeFi exploit/hack history — 574+ incidents sorted by funds lost with technique, chain, classification. Filter by minimum amount (DeFiLlama, free, no key).

IP geolocation via ipwho.is (free, no API key). Returns country, region, city, lat/lon, timezone, ASN, ISP. Pass empty string to geolocate caller IP.

Macro economic indicators (inflation, GDP growth, unemployment) for major countries via World Bank API — no API key required.

Global crypto market overview: total market cap, 24h volume, BTC/ETH dominance, active coins & markets (CoinGecko, free, no key).

Bitcoin mempool stats + recommended fee rates (sat/vB) from mempool.space (free, no API key). Block height, pending tx count, fastest/30min/1hr/economy fees.

Latest crypto news aggregated from major outlets (CoinDesk/Cointelegraph/Decrypt/+3), LLM-ready, keyword/category filterable.

NFT collection floor price, volume, owner/token count via Reservoir (free, no API key). Multi-chain: ethereum, polygon, base, optimism, arbitrum, zora.

Active prediction markets from Polymarket CLOB (no API key). Returns YES probabilities, volume, end dates. Filter by market_id or category.

Live token price, liquidity, FDV, 24h volume & change via DEX aggregation.

DeFi protocol TVL ranking (7742+ protocols): top protocols by TVL with chain breakdown, 1d/7d change. Filter by chain or category (DeFiLlama, free, no key).

Rug/safety scan of an ERC-20 token: mint, blacklist, pausable, tax, upgradeable-proxy, ownership.

Knowledge search via Wikipedia + DuckDuckGo Instant Answer (free, no API key). Returns article summaries, snippets, factual entities. Great for AI agent knowledge lookups.

Solana wallet intelligence via public mainnet RPC (no key). SOL balance, SPL token holdings, activity status. Extends EVM coverage to Solana ecosystem.

Stablecoin circulating supply ranking (385+ stablecoins): USDT, USDC, DAI, etc. with peg type, mechanism, multi-chain breakdown (DeFiLlama, free, no key).

Stock prices for major US equities and market indices (S&P 500, NASDAQ, Dow Jones) via Yahoo Finance — no API key required.

Historical price and volume chart for any crypto token (up to 365 days) via CoinGecko — candlestick-ready OHLCV data, no API key.

GitHub developer activity for any crypto project — commits, stars, forks, PRs, code additions/deletions via CoinGecko.

Top trending crypto coins + NFTs by search volume (CoinGecko, free, no API key). Price, 24h change, sparkline, market cap rank.

Protocol TVL ranking + 1d/7d momentum, filterable by category/chain (DeFi analytics).

Wallet intelligence: EOA-vs-contract, ETH+USDC balance, tx count, activity/risk flags.

Current weather + multi-day forecast for any city or lat/lon via Open-Meteo (free, no API key). Temperature, humidity, wind, precipitation, WMO condition codes.

Best DeFi yields (stablecoin/any), filterable by chain/asset/min-TVL. APY, base/reward split, IL risk.