Census.gov

The US Census Bureau provides various APIs and data sets on demographics and businesses

Endpoint	`https://www.census.gov`
Trust	100% uptime over 1 checks · ~1279 ms
Pricing	See the provider
docs url	https://www.census.gov/data/developers/data-sets.html
auth	none
source	public_apis

Use it

Endpoint

https://www.census.gov

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/883

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}