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SERP Competitor Analysis
x402
SERP Competitor Analysis is a paid API for AI agents from seo.openverbs.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).
Identifies competing domains ranking in Google SERPs for a given set of keywords, returning a ranked list of competitor domains.
Price / call$0.05
Success—
StatusUnknown
How this service works
SERP 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.
Output
Returns a ranked list of competing domains found in the SERPs for the provided keywords, up to the specified limit (default 20, max 100). Each entry represents a domain competing for visibility across the queried keywords, enabling competitive SEO benchmarking.
Example use cases
Content gap competitive benchmarking
“Find the top 15 domains competing in Google US search results for the keywords 'content marketing strategy' and 'editorial calendar tool' — I want to know who we're up against before we build out our blog.”
Niche market competitor discovery
“I'm launching an HR software product — can you pull the top 25 competing domains ranking for 'hr software for small business' and 'employee onboarding tool' in English in the United States?”
International SEO competitor mapping
“We're expanding into the UK market — show me the top 20 domains competing in Google for 'project management software' and 'task tracking app', using English language and the UK location so I can see who dominates there.”
Technical details
Endpoint
POSThttps://seo.openverbs.com/v1/serp-competitors?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover which domains are competing in Google SERPs for a specific set of target keywords, especially for competitive benchmarking, content strategy planning, or market entry research. Prefer this over keyword-level analytics endpoints when the goal is domain-level competitive mapping rather than individual keyword metrics. Best suited for agents performing SEO competitive intelligence at scale across multiple keywords simultaneously.
Side effects
- Empty or invalid keywords array returns a validation error
- Keywords exceeding 80 characters each are rejected
- Unsupported or malformed 2-letter language code returns an error
- Invalid DataForSEO location code causes a lookup failure
- Requesting more than 100 keywords or a limit above 100 is rejected
- No competitors found for very niche or misspelled keywords returns empty results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum competing domains to return. Defaults to 20. |
| keywords | array | Target keywords whose SERPs to analyse, e.g. ["seo tools", "keyword research"] (up to 100). |
| languageCode | string | Language code (2-letter). Defaults to en. |
| locationCode | integer | DataForSEO location code. Defaults to 2840 (United States). |
Tags
x402
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