Marketplace · API · x402

keywords.duoleads.com/v1/keyword-difficulty

Keyword difficulty (0-100: how hard it is to rank in Google's top 10) for up to 100 keywords in one $0.04 call. Use when you need to prioritise keywords by ranking difficulty. Keywords are normalised to lower case; over 100 keywords is a free 400. Keywords without a score are listed in missing (still charged). Bad input is free; upstream errors are not charged.

Endpoint	`https://keywords.duoleads.com/v1/keyword-difficulty`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39
method	POST
last updated	2026-11-09T16:25:09.87Z

Use it

Call it (an x402 client pays automatically)

curl -i https://keywords.duoleads.com/v1/keyword-difficulty
# 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/x402-2775d68cc083deeb

Search the whole marketplace from your agent (MCP)

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

keywords.duoleads.com/v1/keyword-difficulty

Use it

Related