Current air quality (US AQI, PM2.5, ozone) for a location (?lat=&lon=). Live. Returns JSON.

MEDIA: anime — score, rank, studios, genres, synopsis from MyAnimeList (?q=naruto, required). Returns JSON.

MEDIA: Art Institute of Chicago artworks — artist, date, medium, image (?q=monet, optional). Returns JSON.

SCIENCE: newest arXiv preprints (physics, astro, CS, bio, climate) matching a query. ?q. Returns JSON.

SCIENCE: NASA Astronomy Picture of the Day with expert explanation. ?date=YYYY-MM-DD. Returns JSON.

MEDIA: audiobooks — author, genre, price, description (?term=harry+potter, required). Returns JSON.

ECONOMICS: latest observations for a U.S. BLS economic series — CPI, unemployment, payrolls, earnings (?series=CUUR0000SA0). Returns JSON.

MEDIA: books — authors, first-published year, ratings, subjects (?q=tolkien, required). Returns JSON.

MEDIA: books trending on Open Library today. Returns JSON.

CRYPTO: Bitcoin miner-reward economics over ~144 blocks — reward vs fees, fee share, per-block averages (mempool.space). Returns JSON.

CRYPTO: the 15 most-recent Bitcoin blocks — height, time, tx count, size, pool, reward, median fee (mempool.space). Returns JSON.

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

CRYPTO: Bitcoin difficulty-adjustment forecast — epoch progress, estimated next change, blocks remaining (mempool.space). Returns JSON.

CRYPTO: live Bitcoin network hashrate (EH/s), current difficulty and 3-day trend (mempool.space). Returns JSON.

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

UK grid carbon intensity (gCO2/kWh) — ESG / energy-timing signal. Live. Returns JSON.

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

CRYPTO: 30-day daily TVL history for one chain (DeFiLlama). ?chain=Ethereum|Arbitrum|Solana. Returns JSON.

PHARMA: drug/chemical cross-reference resolver (MyChem) — DrugBank/ChEBI/ChEMBL/PubChem/UNII IDs. ?q=name. Returns JSON.

SCIENCE: NASA POWER long-term monthly climate normals (temp, precip, solar) for any coordinate. ?lat&lng. Returns JSON.

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

CRYPTO: notable events (conferences, launches, milestones) for a coin (CoinPaprika). ?id=btc-bitcoin. Returns JSON.

CRYPTO: where a coin trades — top exchange markets by 24h volume with price and trust score (CoinPaprika). ?id=btc-bitcoin. Returns JSON.

CRYPTO: 30-day daily USD price history for any coin by CoinGecko id (DeFiLlama oracle, keyless). ?id=bitcoin|ethereum. Returns JSON.

CRYPTO: fundamental profile — type, tags, proof mechanism, whitepaper, dev status, links (CoinPaprika). ?id=btc-bitcoin. Returns JSON.

FINANCE: SEC registrant profile — SIC, exchanges, incorporation, EIN, former names, and recent-filing mix for a company (?ticker=AAPL). Returns JSON.

PHARMA: physicochemical properties for a compound (PubChem) — formula, MW, SMILES, IUPAC, XLogP, TPSA. ?q=name. Returns JSON.

PHARMA: names/synonyms and CID for a compound (PubChem) — brand names, CAS, trade names. ?q=name. Returns JSON.

HEALTH: medical-condition autocomplete/normalization (NLM). ?q=text. Returns JSON.

Public companies holding BTC and ETH — totals + top holders (corporate treasury signal). Live. Returns JSON.

COUNTRIES: all ISO-2 countries supported by the holiday/border endpoints (no params). Returns JSON.

HEALTH: COVID-19 totals for a country — cases, deaths, recovered, tests, per-million. ?country= (default USA). Returns JSON.

HEALTH: COVID-19 worldwide aggregate totals — cases, deaths, recovered, active, tests. No params. Returns JSON.

HEALTH: COVID-19 cumulative vaccine doses for a country, last 30 days. ?country= (default USA). Returns JSON.

Rust crate metadata (?crate=serde): total & recent downloads, latest version, repository, categories, keywords. Returns JSON.

Rust crates ranked (?sort=downloads|recent-downloads|recent-updates|new) — ecosystem-leaders/momentum signal. Returns JSON.

Live crypto perpetual funding-rate signal for 8 top coins (BTC, ETH, SOL, XRP, DOGE, BNB, ADA, AVAX): 8h funding rate, annualized carry %, directional bias, and spot — ranked by carry magnitude. A derived signal, not raw prices. Returns JSON.

Total crypto market cap, 24h volume, and BTC/ETH dominance with 24h change. Live. Returns JSON.

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

Crypto sectors/categories ranked by 24h market-cap change — rotation signal (AI, memes, RWA, DePIN). Live. Returns JSON.

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

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

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

LOGISTICS: sunrise/sunset, solar noon, twilight windows & day length for a location (?lat=&lon=&date=). Returns JSON.

CRYPTO: chronicle of major DeFi hacks & exploits with USD losses, technique and chains (DeFiLlama). Optional ?limit. Returns JSON.

Top DeFi protocols by TVL with 1-day and 7-day change (DeFiLlama). Live. 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.

CRYPTO: Deribit BTC/ETH perpetual — index/mark price, basis, OI, current & 8h funding annualized, 24h volume. ?coin=BTC|ETH. Returns JSON.

Most-active Stack Overflow tags — what developers are building/struggling with. Live. Returns JSON.