Marketplace · API · x402

api.interzoid.com/getsalesusetaxrates

Current US sales and use tax rates for any address, ZIP code, city, or state, broken down into state, county, city, and special district rates plus the combined rate. A full street address gives the most accurate rate. For e-commerce checkout, invoicing, tax compliance, and accounting.

Use it

Call it (an x402 client pays automatically)

curl -i https://api.interzoid.com/getsalesusetaxrates
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-5ca82a2cb83e7634

Search the whole marketplace from your agent (MCP)

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