The world's public data, one API.
NS Pros Data API brings public data from governments and public institutions around the world into a single REST API and MCP server, so developers and AI agents can search and query it in one place. Every source in the catalog is license-cleared for commercial use, and every response includes source attribution.
Sources include the Japan Meteorological Agency, the World Bank, the US National Weather Service, Government of Canada open data, and UK data.gov.uk — spanning weather, health, finance, business, and public records. New sources are added daily.
Browse the catalog
Browse the catalog — no key needed. Get a free key when you're ready to query.
Loading the catalog…
Browsing is open to everyone. Running a query takes a free API key — get one when you're ready.
Public data from governments and public institutions around the world, organized by category and searchable in one catalog.
Every source is license-checked for commercial redistribution before it is listed.
Every response automatically includes source attribution.
Browse by category
The catalog is organized into the categories below. Pick a category in the catalog search above to see the sources inside it.
| Category |
|---|
| Business & companies |
| Finance & economy |
| General catalogs |
| Health & medicine |
| immigration_life |
| Books & libraries |
| science |
| vehicles |
| Weather & environment |
Quick start
Browse the catalog (public — no key needed):
curl "https://api.nspros.ca/v1/sources?q=weather"Query a source:
curl "https://api.nspros.ca/v1/query/uk_bank_holidays?q=2026" \
-H "Authorization: Bearer <key>"Connect over MCP:
{
"mcpServers": {
"nspros-data": {
"url": "https://api.nspros.ca/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}Pricing
Free
- 1,000 requests / month
- No card required
- REST + MCP access
Pay as you go
- per 1,000 requests
- No monthly commitment
- REST + MCP access
Right now, signing up issues a free-tier key immediately. Pay-as-you-go billing will be connected via Stripe in the next step — until then, no usage charges are billed.