Discover / seo.openverbs.com

Keyword metrics overview

■ Challenge detected

Get exact SEO metrics for a list of keywords you already have: Google monthly search volume, CPC, competition, keyword difficulty and search intent for each. For prioritising a keyword list. Unknown keywords are omitted.

x402
Base
USDC

Listed price: $0.04
Challenge detected: 10 of the last 10 checks
Median response: 176 ms
Last checked: 17 Oct, 08:59 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://seo.openverbs.com/v1/keyword-overview
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

23 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://seo.openverbs.com/v1

POST/related-keywords$0.04Related keywords API - expand a seed keyword using Google's "searches related to" graph, returning the related keywords (traversed to a configurable depth) each with monthly search volume, CPC, competition, keyword difficulty and search intent, plus the further related terms branching off each. For content-cluster planning and keyword discovery. No matches returns empty results.
POST/keyword-difficulty$0.03Get the SEO keyword difficulty score (0-100, how hard it is to rank in Google top 10) for up to 1000 keywords in a single call. For prioritising which keywords to target. Keywords with no data are omitted.
POST/page-intersection$0.05Given a set of specific page URLs, find the Google keywords those pages jointly rank for, with each page's position, URL and estimated traffic (ETV) per keyword, plus search volume, CPC, competition, difficulty and intent. Page-level, not domain-level. Optional exclude_pages narrows to keywords the pages rank for that others do not.
POST/backlinks-history$0.05Get a domain's backlink profile over time: a monthly timeseries of domain rank, total backlinks, new and lost backlinks, referring domains (new/lost/total), referring main domains, broken backlinks and crawled pages. For tracking link velocity and growth or a competitor's link building. Unknown domain returns found=false.
POST/pagespeed$0.006Page speed API - Google PageSpeed Insights (Lighthouse) performance audit for a URL on mobile or desktop. Returns the performance score plus lab Core Web Vitals (LCP, FCP, CLS, TBT, Speed Index, TTI) and, where available, real-user (CrUX) field data. Data source: Google PageSpeed Insights.
POST/referring-domains$0.05List the domains linking to a target, each with DataForSEO domain rank, number of backlinks, dofollow count, referring subdomains, broken backlinks, spam score and first/last seen dates. For backlink audits and link building. Unknown domain returns empty results.
POST/serp-competitors$0.05SERP competitors API - given a set of target Google keywords, find the domains that dominate those search results, each with how many of the keywords they rank for, average and median position, SERP rating, estimated traffic (ETV) and visibility. Unlike a domain-based competitor lookup, this starts from the keywords you want to win. For competitive SEO and content-strategy research. Empty results if none.
POST/keyword-suggestions$0.04Keyword suggestions API - find long-tail keywords that contain your seed phrase (full-text phrase match), each with Google monthly search volume, CPC, competition, keyword difficulty and search intent. Complements keyword-ideas (semantically related terms) with literal phrase-match variations. For long-tail content and PPC research. No matches returns empty results.
POST/keyword-gap$0.05Keyword gap analysis API - find the Google keywords a competitor ranks for that your domain does not, each with the competitor's ranking position and URL plus monthly search volume, CPC, competition, keyword difficulty and search intent. Surfaces content gaps and keyword opportunities for competitive SEO. Empty results if no gap.
POST/historical-rank$0.18Historical rank overview API - a monthly time series of a domain's Google organic and paid visibility: ranked keyword count, estimated traffic (ETV), traffic cost and position buckets (pos1/top3/top10/top100) for each month. For tracking a site's SEO trajectory, spotting traffic drops/recoveries and competitor trend analysis. Unknown domain returns an empty series.
POST/trends$0.03Google Trends search interest for up to 5 terms: a relative 0-100 popularity series over time, with per-keyword average and latest value. For content timing, seasonality and demand research. Optional location (default worldwide), timeframe (7d/30d/90d/12m/5y, default 12m) and type (web/news/youtube). found=false when no data.
POST/competitors$0.05Find a domain's organic search competitors: rival domains ranking for the same Google keywords, each with the number of common keywords, average position, total ranked keywords and estimated organic traffic. For competitive SEO research. Empty results if none.
POST/keyword-volume-history$0.15Get Google monthly search volume history for a list of keywords, back to 2019: a per-keyword month-by-month search-volume time series plus current CPC and competition. For spotting seasonality, demand trends and momentum that a single keyword-overview snapshot misses. Up to 10 keywords per call; unknown keywords are omitted.
POST/traffic-estimate$0.05Website traffic estimator API - estimate monthly Google organic and paid traffic (ETV) and ranked-keyword counts for up to 100 domains in a single call. For competitor analysis, prospect/CRM scoring and bulk domain enrichment. Unknown domains return found=false.
POST/on-page$0.006On-page SEO audit API - crawl a single URL and return its on-page SEO health: overall score, title & meta description, H1, word count, internal/external link and image counts, load timing (LCP, TTI) and a list of detected issues (missing meta, broken status, not-https, images missing alt, slow load, …).
POST/ranked-keywords$0.05Get the Google organic keywords a domain already ranks for, each with its ranking position, ranking URL, monthly search volume, CPC, difficulty and search intent. For competitor and site SEO audits. Unknown domain returns empty results.
POST/backlink-anchors$0.05Backlink anchor text API - list the anchor texts pointing at a domain, each with how many backlinks, referring domains and referring pages use it, the dofollow/nofollow split, DataForSEO rank, spam score and broken-link count. For anchor-text distribution analysis, over-optimization/penalty audits and link-building research. Unknown domain returns empty results.
POST/domain-overview$0.04Domain overview: estimate a domain's Google SEO footprint — total organic and paid keywords, estimated traffic (ETV), traffic cost, and how many keywords rank in the top 3, top 10 and top 100. Fast website and domain SEO traffic overview and audit. Unknown domain returns found=false.
POST/backlinks$0.06Get a domain's backlink profile and authority: DataForSEO domain rank, total backlinks, referring domains and main domains, referring pages, broken backlinks and spam score. For link analysis and competitor research. Unknown domain returns found=false.
POST/keyword-overview$0.04Get exact SEO metrics for a list of keywords you already have: Google monthly search volume, CPC, competition, keyword difficulty and search intent for each. For prioritising a keyword list. Unknown keywords are omitted.
POST/relevant-pages$0.05Relevant pages API - list a domain's best-performing pages in Google, each with page-level organic and paid metrics: ranked keyword count, estimated traffic (ETV), traffic cost and position buckets (pos1/top3/top10/top100). For finding a site's top content, competitor content research and page-level SEO audits. Unknown domain returns empty results.
POST/search-intent$0.03Classify the search intent behind keywords: for each keyword, the dominant intent (informational, navigational, commercial or transactional) with a probability, plus any secondary intents. For mapping a keyword list to funnel stage and content type. Up to 1000 keywords per call.
POST/keyword-ideas$0.04Discover related keyword ideas from a seed keyword, with Google monthly search volume, CPC, competition, keyword difficulty and search intent for each. For content planning and SEO research. No ideas returns empty results.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 23 of 23 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/seo.openverbs.com

Recent checks

29 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.17 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
17 Oct, 08:59 UTC	Challenge detected	402	435ms
16 Oct, 08:13 UTC	Challenge detected	402	176ms
14 Oct, 21:46 UTC	Challenge detected	402	213ms
13 Oct, 10:39 UTC	Challenge detected	402	276ms
11 Oct, 10:02 UTC	Challenge detected	402	388ms
9 Oct, 21:31 UTC	Challenge detected	402	176ms
8 Oct, 18:39 UTC	Challenge detected	402	175ms
7 Oct, 15:42 UTC	Challenge detected	402	172ms
6 Oct, 15:31 UTC	Challenge detected	402	176ms
29 Sept, 05:02 UTC	Challenge detected	402	173ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 08:59 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Keyword metrics overview?

Its listed price is $0.04.

What payment terms does Keyword metrics overview advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Keyword metrics overview listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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