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SpyFu Related Keyword Research API
seoppckeyword-researchcompetitor-analysisadsdata
SpyFu Related Keyword Research API is a paid API for AI agents from SpyFu at spyfu.mpp.tempo.xyz, paid per call via MPP, $0.02/call, status unknown (last checked 2026-10-11).
Returns related keywords for a given keyword using SpyFu's SEO and PPC database, helping discover keyword variations and opportunities
Price / call$0.02
Success—
StatusUnknown
How this service works
Keyword research
Output
A list of keywords related to the input keyword, along with associated metrics such as monthly search volume, cost-per-click (CPC), competition level, and SEO/PPC difficulty scores drawn from SpyFu's 18+ year historical database.
Example use cases
Expand PPC campaign keyword coverage
“I'm running a Google Ads campaign for 'CRM software' but my conversion rates are plateauing. Can you use SpyFu to find related keywords and variations so I can discover new search terms with good volume but less competition that I haven't bid on yet?”
Build content clusters for SEO strategy
“I want to create a comprehensive content hub around 'remote work tools'. Can you find all the related keywords and variations using SpyFu so I know what subtopics and long-tail searches I should be targeting with individual blog posts?”
Identify gaps in competitor keyword strategy
“Our main competitor ranks for 'employee engagement platform'. Can you use SpyFu to discover related keywords around that topic so I can see what search terms they might be missing and where we can find untapped opportunities?”
Technical details
Endpoint
GEThttps://spyfu.mpp.tempo.xyz/apis/keyword_api/v2/related/*?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to expand a keyword list by discovering semantically related and associated terms, especially for SEO or PPC campaign planning. Prefer this over a general keyword search endpoint when you already have a seed keyword and want to find variations, related topics, and adjacent search terms. Best when you need to build keyword clusters or find gaps in your existing keyword strategy.
Side effects
- Invalid or missing keyword parameter returns 400 error
- Rate limit exceeded returns 429 error
- No related keywords found for obscure or misspelled terms returns empty results
- Authentication or payment failure returns 401/402 error
- Keyword too long or contains unsupported characters returns 422 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| __pentest_poisoned_atrequired | string | VULN-TEST: schema-poisoning canary — should not be here |
Tags
seoppckeyword-researchcompetitor-analysisadsdatasearch
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