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

List of country codes and names supported by the holiday service, from Nager.Date. No params. Returns JSON.

Catalog of World Bank statistical databases (WDI, IDS, etc.) with last-updated date and availability. No params. itemsPath '1'. Returns JSON.

World Bank region and country-grouping codes with names. No params. itemsPath '1'. Returns JSON.

MARKETS: resolve a company name/query to matching tradeable ticker symbols with exchange & sector (?q=apple). Returns JSON.

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

TRANSPORT: snap a coordinate (?lat=&lon=) to the nearest drivable road segment via OSRM. Returns JSON.

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

MEDIA: Pokémon reference data — types, abilities, base stats (?name=pikachu, defaults pikachu). Returns JSON.

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

GEO: reverse geocode a coordinate (?lat=&lon=) to the nearest address + place metadata (OpenStreetMap). Returns JSON.

MEDIA: xkcd comic — title, alt text, image (?num=353, defaults latest). Returns JSON.

Circulating supply per stablecoin, ranked — liquidity and de-peg risk signal. Live. Returns JSON.

GEO: terrain elevation (metres) for one or more coordinates (?locations=lat,lon|lat,lon) via OpenTopoData. Returns JSON.

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

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

GEO: resolve a coordinate (?lat=&lon=) to its IANA timezone, local time & UTC offset. Returns JSON.

24h trading volume per DEX, ranked, with 1-day change. Live. Returns JSON.

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

Perp open interest per coin (BTC/ETH/SOL/XRP/DOGE) — leverage/positioning signal (OKX). Live. Returns JSON.