Annual macroeconomic series from the World Bank Indicators API, normalized JSON. Query: ?country=USA&indicator=FP.CPI.TOTL.ZG&years=5 (ISO3 country code; common indicators: FP.CPI.TOTL.ZG inflation %, NY.GDP.MKTP.CD GDP current US$, GC.DOD.TOTL.GD.ZS gov debt %GDP, SL.UEM.TOTL.ZS unemployment %). Returns the last N years with values, newest first. 200+ countries; 24h cache.

Public holidays and school holidays with subdivision granularity (German Laender, French academies, Spanish communities...) from the OpenHolidays API (data ODbL-1.0, ~36 mostly European countries). Query: ?country=DE&from=2026-07-01&to=2026-12-31&type=public|school&subdivision=DE-BY (optional ISO 3166-2 filter; window max 366 days, default today +6 months). Each entry: dates, English name, nationwide flag, affected subdivision codes. 24h cache.

Wholesale day-ahead electricity prices in EUR/MWh per European bidding zone, from the Energy-Charts API (Fraunhofer ISE; data CC BY 4.0 from Bundesnetzagentur/SMARD). Query: ?bzn=DE-LU|FR|NL|ES|IT-NORTH|SE4... (44 zones), optional ISO window &start=2026-07-12&end=2026-07-13. Returns timestamped price points (15-min or hourly slots, max 288). 1h cache.

Decodes a Vehicle Identification Number through the official US regulator's vPIC database (public domain): make, model, year, body class, engine, transmission, GVWR and assembly plant. Query: ?vin=1HGCM82633A004352 (partial VINs with '*' accepted, optional &model_year=2003). error_code/error_text carry vPIC's structural verdict. Static reference data, 24h cache.

Circulating supply per stablecoin from DeFiLlama with computed net flows (delta_24h/delta_7d/delta_30d = net mint minus burn), peg type, peg mechanism and current price. Query: ?symbol=USDT for one asset, or ?top=10 (1-50, default 10) for the largest by supply. Served with a 30min cache.

Official French company registry search via recherche-entreprises.api.gouv.fr (INSEE Sirene data, updated daily). Query: ?q=airbus or ?q=383474814 (name or SIREN), optional per_page (1-10), page, code_postal, activite_principale (NAF, e.g. 70.10Z), etat_administratif (A active / C ceased). Returns SIREN, legal form, NAF, HQ address, employee range, status and published finances per company. Personal data on directors is stripped (GDPR). 24h cache.

Monthly average interest rates the US Treasury pays on its outstanding securities, from the official FiscalData API (Average Interest Rates dataset, updated monthly). Query: ?security=Treasury Bills (exact security_desc, optional; e.g. Treasury Notes, Treasury Bonds) &since=2026-01-01 (optional record_date floor) &limit=12 (1-100, newest first). Returns record_date, security type/name and avg rate in percent. Cached 24h.

Base-image due diligence from the Docker Hub API v2: repository status, star and pull counts, last_updated with derived days_since_update, and the 10 most recently pushed tags with push date and size. Query: ?repo=nginx&namespace=library (namespace defaults to library for official images). Lets CI/CD agents avoid building on stale or abandoned images; cached 1h.

Upcoming space launches worldwide from Launch Library 2 (The Space Devs): launch window (NET, window start/end), provider, pad and location, mission name/type/orbit, go/TBD status. Query: ?limit=10&search=falcon&provider=SpaceX&net_gte=2026-08-01&net_lte=2026-09-01 (all optional). Served from a 1h cache (upstream is rate-limited); count field gives the full upcoming total.

Adds N French business days to a date (?start=2026-07-13&add=30) or counts them over a range (?from=2026-07-01&to=2026-09-30). Skips weekends and the 11 French legal public holidays (movable feasts computed via Butcher-Meeus). mode=ouvres (Mon-Fri, default) or ouvrables (Mon-Sat). Deterministic local computation, JSON.

Active weather alerts from the US National Weather Service (NOAA, public domain, real-time feed). Query: ?area=CA (2-letter state code) or ?point=34.05,-118.24; optional severity=Extreme|Severe|Moderate|Minor and event='Tornado Warning'. Returns up to 50 normalized alerts: event, severity, urgency, headline, affected areas, onset/expiry. count=0 means no active alert matches. 2 min cache.

Official US Treasury Reporting Rates of Exchange: the legal USD conversion rates required for FBAR/8938 filings and US federal accounting, covering ~170 currencies including exotics absent from ECB feeds. Query: ?currencies=Euro Zone-Euro,Japan-Yen (optional, all if omitted) and ?date=YYYY-MM-DD (latest quarterly rate at or before that date, default today). Returns units of foreign currency per 1 USD. Source updates quarterly; served with a 7-day cache.

Hourly sea-state forecast from Open-Meteo Marine wave models: wave height/direction/period, wind waves and swell, up to 7 days, UTC. Query: ?port=marseille|ajaccio|nice|... (12 Mediterranean presets) or ?latitude=43.3&longitude=5.4, plus ?days=1-7 (default 2). Includes a summary block (max wave height next 24h / full horizon). 1h cache. For sailing go/no-go, port ops and routing.

Latest euro area risk-free spot yields from the ECB Data Portal (dataset YC, AAA-rated central government bonds, Svensson model; updated each business day ~12:00 CET). Query: ?tenors=3M,1Y,2Y,5Y,10Y,30Y (1-8 tenors from 3M to 30Y). Returns yields_pct per tenor, observation date, and the 2s10s spread in bp when 2Y and 10Y are requested. 1h cache.

Live intra-EU VAT number validation via the European Commission VIES REST API (real-time query of the member state registry). Query: ?cc=IE&vat=6388047V (cc = member state code incl. EL/XI, vat = number without country prefix). Returns is_valid, the trader name and address as registered (when the member state publishes them) and request_date (compliance timestamp); 24h cache.

Carbon intensity of Great Britain's electricity grid from the official NESO Carbon Intensity API (CC BY 4.0), in half-hour periods with a low/moderate/high index. No params -> current national half-hour; ?horizon=fw24h|fw48h adds the forecast; ?region=1..17 (13=London) switches to a DNO region and includes the generation mix per fuel. 30-min upstream cadence, 30-min cache.

Offline validation of intermodal container numbers per ISO 6346: owner code, equipment category (U/J/Z), serial and check-digit verification (mod-11 with power-of-2 weights). Catches transcription errors before a booking or B/L is filed. Query: ?container=CSQU3054383. Returns valid flag, parsed parts and the computed check digit. Deterministic, cached 1 year.

Latest observed 15-min records from RTE's eCO2mix national real-time dataset (ODRE portal, Licence Ouverte 2.0). Per record: UTC timestamp, consumption vs D/D-1 forecasts (MW), production by source (nuclear, wind, solar, hydro, gas, coal, bioenergy, storage), grid CO2 intensity (g/kWh) and commercial exchanges per border. Query: ?rows=1-12 (default 4 = last hour). 15-min cache.

Near-real-time Great Britain national electricity demand outturn from the Elexon Insights (BMRS) open API: 5-minute MW readings sorted oldest to newest (default: last 24h = 288 points), plus a 'latest' field with the most recent value. ?last=N (1-500) sets how many recent points to return, e.g. ?last=12 = last hour. Upstream updates every ~5 min; served with a 5-min cache.

Deterministic ISIN check before routing an order or paying a market-data API: structure regex (2-letter country or XS/EU, 9-char NSIN, check digit) and the Luhn checksum over the base-36 expansion. Query: ?isin=US0378331005. Returns valid, country_code, nsin, check_digit and is_international. A corrupted ISIN means a rejected order or the wrong instrument. Pure offline computation, 1y cache.