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SpyFu Keyword Information API (via Sponge/x402)
x402
SpyFu Keyword Information API (via Sponge/x402) is a paid API for AI agents from spyfu.x402.paysponge.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Retrieves detailed SEO and search data for a specific keyword, including search volume, cost-per-click, competition metrics, and related insights from SpyFu.
Price / call$0.01
Success—
StatusDown
How this service works
GET /apis/keyword_api/v2/related/getKeywordInformation
Output
Returns detailed keyword metrics from SpyFu including monthly search volume, cost-per-click (CPC), SEO difficulty, advertiser competition, related keyword data, and other SEO/SEM performance indicators for the queried keyword.
Example use cases
Example prompt
“Pull the SpyFu keyword information for 'project management software' — I want to see the search volume, CPC, and competition metrics.”
Technical details
Endpoint
GEThttps://spyfu.x402.paysponge.com/apis/keyword_api/v2/related/getKeywordInformationWhen to prefer
Choose this endpoint when you need comprehensive SEO and paid search metrics for a specific keyword from SpyFu's database, particularly when building keyword research workflows, comparing keyword competitiveness, or estimating advertising costs. Prefer over generic search APIs when SpyFu's historical and competitive intelligence data is specifically needed.
Side effects
- Missing or invalid keyword parameter returns an error or empty result
- Rate limiting or payment failure (402) if USDC balance is insufficient
- Keyword not found in SpyFu database returns empty or null metrics
- Network timeout from upstream SpyFu API
- Malformed query parameters return a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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