Inflation API - CPI & Economic Indicators by Country

Problem: your finance app, salary or price calculator, newsroom or AI agent needs the inflation rate of a country, this month's euro-area HICP, or "what is $100 from 2000 worth today". The World Bank publishes yearly data in bulk files and its per-country API is often down; Eurostat publishes monthly HICP as JSON-stat cubes with a new dataset code since 2026 (the old prc_hicp_manr stopped at 2025-12). Joining the two by hand takes a day.

This API: one JSON call, no API key, answers from a maintained copy of the official data.

• Yearly, 217 countries (World Bank WDI): inflation (CPI %), cpi (index 2010=100), gdp, gdpGrowth, gdpPerCapita, unemployment, population, interestRate (lending rate). Raw WDI codes work too.
• Monthly, 37 European countries (Eurostat HICP): year-on-year %, month-on-month % and index, including the euro-area flash estimate (estimated: true). latest adds the newest month to the yearly row, so you get yearly and monthly numbers in one call.
• Inflation calculator: adjust converts an amount between two years (CPI index) or two months (HICP index, EU countries) and returns the cumulative and average annual inflation.
• Countries: ISO2 (US, DE, EL or GR), ISO3 (BGR) or names (Germany). Up to 50 per call.
• Source on every row: World Bank WDI (CC BY 4.0) and Eurostat (reuse authorised with source acknowledged). The source field carries the attribution.

Example (API)

curl -X POST "https://api.apify.com/v2/acts/martin10291~inflation-cpi-api/run-sync-get-dataset-items?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"mode": "latest", "countries": ["DE"], "indicators": ["inflation"]}'

Output row (measured 2026-11-13):

{"country": "DE", "countryName": "Germany", "iso3": "DEU", "indicator": "inflation", "value": 2.1718, "unit": "% per year", "year": 2025,
 "previousValue": 2.2565, "previousYear": 2024, "change": -0.0847,
 "monthlyHicp": {"month": "2026-10", "yoy": 2.8, "mom": -0.1, "index": 103.8, "indexBase": "Index, 2025=100", "estimated": true},
 "source": "World Bank, World Development Indicators (FP.CPI.TOTL.ZG), licence CC BY 4.0; Eurostat, HICP monthly data (prc_hicp_minr)"}

Inflation calculator ({"mode": "adjust", "amount": 100, "country": "US", "fromYear": 2000, "toYear": 2024}):

{"country": "US", "amount": 100.0, "fromYear": 2000, "toYear": 2024, "adjustedAmount": 182.17, "cumulativeInflationPct": 82.17, "avgAnnualInflationPct": 2.53, "method": "WB CPI index (FP.CPI.TOTL)"}

More inputs:

• {"mode": "monthly", "countries": ["FR", "Bulgaria"], "startMonth": "2025-10"} -> one row per country and month (yoy, mom, index).
• {"mode": "history", "countries": ["JP"], "indicator": "inflation", "startYear": 2015} -> one row per year.
• {"mode": "adjust", "amount": 50, "country": "DE", "fromMonth": "2020-01", "toMonth": "2026-09"} -> monthly HICP precision.
• {"mode": "countries"} / {"mode": "indicators"} -> what is covered.

Use from agents (MCP)

Add the Apify MCP server (https://mcp.apify.com?tools=martin10291/inflation-cpi-api) to Claude, Cursor or any MCP client and ask: "What was inflation in Bulgaria last month, and what is 1,000 EUR from 2020 worth today?".

Schedule it

Set onlyNew: true and a monitorId, schedule monthly: each run returns only the new months (HICP) or new years (World Bank) since the last run.

Input

Field	Meaning
mode	latest (default), history, monthly, adjust, indicators, countries
countries	list of ISO2/ISO3/names, default US, DE, GB, JP, BG
indicators / indicator	for latest / history, default inflation
startYear, endYear	history range
startMonth, endMonth	monthly range, YYYY-MM
amount, country, fromYear, toYear, fromMonth, toMonth	adjust
limit	max rows (default 1000)
onlyNew, monitorId	monitor mode

Limits (honest)

• World Bank data is yearly and lags: the newest year is usually last year (US CPI currently ends 2024).
• Monthly HICP covers EU, EEA and candidate countries only; the US and UK are not monthly here.
• interestRate is sparse for many countries.

Pricing

$1.00 per 1,000 rows. A latest call for 3 countries = 3 rows.

FAQ

• How fresh is the data? Eurostat HICP is refreshed every 6 hours (the flash estimate appears at the end of each month, estimated: true); World Bank data every 12 hours (it changes a few times a year). Every row has fetchedAt; if a source is down, the last copy is returned with stale: true.
• Why is the newest year last year? The World Bank publishes yearly values with a lag. For Europe use monthly or the monthlyHicp field for this month's number.
• Errors: an unknown country, indicator or month, or a monthly request for a non-European country returns a clear message in the run status and RUN_SUMMARY.lastError; the run does not fail and no rows are charged.