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x402 SEO PAA Question Expander
x402
x402 SEO PAA Question Expander is a paid API for AI agents from x402-seo-api.restockalarm.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Expands a seed question into related 'People Also Ask' SEO keyword ideas using the x402 micropayment protocol
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay $0.01-0.02 USDC per call on Base via x402
Output
A JSON object containing the original question and an array of related 'People Also Ask' style questions that people commonly search for in relation to the seed query, useful for SEO keyword discovery and content planning.
Example use cases
Blog content planning with PAA keywords
“I'm writing a blog post about intermittent fasting — can you find me the related questions people also ask about 'is intermittent fasting effective' so I know which subtopics to cover?”
Competitor keyword gap research
“I want to find all the 'People Also Ask' questions related to 'what is a standing desk' — I'm trying to identify keyword gaps my competitors might be missing for my SEO strategy.”
Localized SEO question research
“Can you pull PAA keyword ideas for the question 'how to start a business' in Spanish by setting the language to 'es', so I can plan content for my Spanish-speaking audience?”
Technical details
Endpoint
GEThttps://x402-seo-api.restockalarm.workers.dev/v1/paa-expand?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick, affordable PAA-style keyword expansion for a single question at $0.01 per call via x402 micropayments on Base. It is ideal for agents automating SEO research workflows at scale where cost-per-call matters. Prefer this over traditional SEO tools when you need programmable, pay-per-use access without subscriptions, or when integrating keyword research into an autonomous content planning pipeline.
Side effects
- Missing required 'question' query parameter returns an error
- Invalid or unsupported language code in 'hl' may return empty or unexpected results
- Payment failure via x402 protocol prevents the request from completing
- Seed question with no related PAA data may return an empty 'related' array
- Rate limiting or worker downtime may cause timeouts or 503 errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"related": [
"How does running work?"
],
"question": "is running good"
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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