Marketplace · API · x402

keywords.duoleads.com/v1/serp-history

Google results page of a keyword as it was in the past: the first snapshot (about one a month) in a window of up to 31 days within the last year, with its top 10 organic results (rank, URL, domain, title), result count and result types, from Google search results, $0.018 a call. Use when checking how rankings for a keyword moved month by month. Titles are untrusted third-party text. No snapshot is an empty answer, still charged. Bad input is a free 400; a data source failure is not charged.

Use it

Call it (an x402 client pays automatically)

curl -i https://keywords.duoleads.com/v1/serp-history
# 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-e7a6817d0a875a4e

Search the whole marketplace from your agent (MCP)

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