Catalog of countries, year range, and variable dictionary
Discovery endpoint for the Penn World Table main country-year matrix. Lists every country present in the selected release (185 countries for PWT 11.0; 183 for PWT 10.01) with its first and last observation year, the panel year range, and the full list of variable names accepted by the other endpoints. Use this before calling /country/{iso3}, /country/{iso3}/{variable}, /top, or /compare to confirm the exact ISO3 codes and variable spelling. Published under CC BY 4.0 with attribution to Penn World Table (Feenstra, Inklaar & Timmer, University of Groningen).
Query parameters
Release selector. pwt1100 (default, current PWT 11.0) or pwt1001 (legacy PWT 10.01).
Release selector. pwt1100 (default, current PWT 11.0) or pwt1001 (legacy PWT 10.01).
Response
Catalog payload with country list, year range, variable list, and release metadata.
Example response
{
"data": {
"version": "pwt1100",
"label": "PWT 11.0",
"base_year": "2021",
"doi": "10.34894/FABVLR",
"release_time": "2025-10-10T11:49:22Z",
"country_count": 185,
"year_range": {
"max": 2023,
"min": 1950
},
"variable_count": 47,
"countries": [
{
"countrycode": "USA",
"country": "United States",
"currency_unit": "US Dollar",
"first_year": 1950,
"last_year": 2023,
"observations": 74
}
]
},
"meta": {
"endpoint": "/api/v1/fred/us/cpi",
"data_time": "2026-04-16T14:30:00Z",
"response_time": "2026-04-16T14:30:12Z",
"provider": "Sugra API v1.0.1",
"source": "sugra_crypto",
"attribution": "Short interest and Reg SHO daily short volume data is owned by and sourced from FINRA (Financial Industry Regulatory Authority).",
"fallback_chain": [
"sugra_crypto",
"sugra_finance"
]
}
}