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Search Volume

by SEO Keyword Search Volume & CPC in Search & web

x402 APIPassing, checked 2 h ago

Google search volume, CPC, competition, keyword difficulty and intent for up to 20 comma-separated keywords in one $0.04 GET (DataForSEO Labs). Use when you need monthly search volume for a few keywords in a country. volume = avg monthly searches, cpc in USD, competition 0-1, difficulty 0-100. Keywords without data are listed in missing (still charged). Bad input is free; upstream errors are not charged.

GET
https://keywords.duoleads.com/v1/search-volume
Price
$0.04
per call in USDC
Uptime
100%
last 30 days
Response time
325 ms
422 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

GET https://keywords.duoleads.com/v1/search-volume

Each call costs $0.04 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://keywords.duoleads.com/v1/search-volume?country=us&keywords=phone%2Cwatch&lang=en

Parameters

ParameterTypeRequiredDescription
countrystringNoISO 3166-1 alpha-2 country code of a supported location (us, gb, de, ...; uk = gb). Default us. Default: "us".
includeMonthlystringNotrue adds each keyword's monthly search volumes. One of: true, false.
keywordsstringYes1-20 keywords, comma-separated (empty segments are ignored); each at most 80 characters. Whitespace and control characters are normalised to single spaces and keywords to lower case; a keyword that is then empty, over 10 words or over 80 characters is not looked up and is listed in missing; none le…
langstringNoLanguage code offered for the country (en, es, de, ...; en-US = en). Default: en when offered, else the country's main language. Default: "en".

Example response

The provider's example. We can't check it without paying.

Example response, 46 lines
{
  "dataAsOf": "2026-09-16T03:19:59Z",
  "market": {
    "country": "US",
    "fallback": false,
    "languageCode": "en",
    "locationCode": 2840,
    "locationName": "United States"
  },
  "missing": [],
  "request_id": "01KEXAMPLE0000000000000000",
  "results": [
    {
      "competition": 0.76,
      "competitionLevel": "HIGH",
      "cpc": 4.63,
      "difficulty": 54,
      "intent": "informational",
      "keyword": "phone",
      "trendYoyPct": 50,
      "volume": 673000
    },
    {
      "competition": 0.95,
      "competitionLevel": "HIGH",
      "cpc": 1.39,
      "difficulty": 54,
      "intent": "transactional",
      "keyword": "watch",
      "trendYoyPct": 22,
      "volume": 550000
    }
  ],
  "see_also": {
    "endpoint": "https://keywords.duoleads.com/v1/keyword-overview",
    "params": [
      "keywords",
      "locationCode",
      "languageCode"
    ],
    "reason": "More than 20 keywords? POST up to 100 to keyword-overview: the same fields in one $0.04 call."
  },
  "source": "DataForSEO Labs (Google Ads data)",
  "total": 2,
  "units": "volume: average monthly Google searches; cpc: US dollars; competition: 0-1 (Google Ads); competitionLevel: LOW|MEDIUM|HIGH; difficulty: 0-100; intent: informational|navigational|commercial|transactional; trendYoyPct: % change vs a year ago"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.04.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://keywords.duoleads.com/v1/search-volume?country=us&keywords=phone%2Cwatch&lang=en'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://keywords.duoleads.com/v1/search-volume?country=us&keywords=phone%2Cwatch&lang=en' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.04 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.04" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.04 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fkeywords.duoleads.com%2Fv1%2Fsearch-volume
const res = await pay("https://keywords.duoleads.com/v1/search-volume?country=us&keywords=phone%2Cwatch&lang=en");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.04 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.04"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://keywords.duoleads.com/v1/search-volume?country=us&keywords=phone%2Cwatch&lang=en")
    print(res.status_code, res.text)

Security scan

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