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DemandEx Live Gauge
x402
DemandEx Live Gauge is a paid API for AI agents from api.demandex.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-13).
Performs live research to gauge real-time market demand for a product or query, returning a demand signal score and insights
Price / call$0.1
Success—
StatusUnknown
How this service works
Paid ($0.10 USDC via x402). Same body as /v1/gauge — POST { "query": "...", "category"?: "..." } (query 3..200 chars; body-first, ?query= fallback). Combines the mined corpus with a LIVE Reddit search run at request time (up to 50 posts, subreddits unrestricted) and one LLM synthesis call. Total compute budget is 45 seconds; on timeout you get a 504 and are not charged. Returns the same verdict shape as /v1/gauge (cache is always miss). A zero-match, empty-search query is a real cold verdict (c…
Output
Returns a live demand gauge result for the queried product or topic, including a demand score and supporting research signals derived from real-time analysis of the market corpus.
Example use cases
Example prompt
“Can you gauge the live market demand for 'portable cold plunge tubs' — I want to see real-time demand signals before we invest in inventory, scoped to the fitness category if possible.”
Technical details
Endpoint
POSThttps://api.demandex.dev/v1/gauge/liveWhen to prefer
Use this endpoint when you need a live, real-time demand signal for a specific product or idea rather than a pre-scored static result. Prefer this over the sibling opportunity card endpoints when you want to research a custom query not already indexed in the catalog, or when freshness and live research matter more than cost efficiency. It costs more ($0.10 vs $0.01–$0.05) but returns current demand intelligence rather than cached opportunity data.
Side effects
- Query string shorter than 3 or longer than 200 characters returns validation error
- Invalid or unrecognized category slug may return empty or unscoped results
- Payment failure via x402 protocol returns 402 with payment details required
- Network or upstream research service timeout may return 5xx error
- Missing required 'query' field returns 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | The product/demand query to gauge with live research (3..200 chars). Required. |
| category | string | Optional category slug to scope the corpus match. |
Output
Schema · Response
{
"type": "json",
"example": {
"cache": "miss",
"query": "sony xm5 replacement headband",
"charged": true,
"fetchedAt": "2026-07-18T11:45:00.000Z",
"rationale": "Live Reddit search plus mined signals show sustained, recent demand for an aftermarket XM5 headband.",
"topEvidence": [
{
"quote": "Just found out the XM5 band is glued in — anyone selling a replacement?",
"upvotes": 58,
"permalink": "https://reddit.com/r/headphones/comments/def456"
}
],
"verdictScore": 86,
"demandTemperature": "hot",
"relatedOpportunities": [
{
"slug": "sony-wh1000xm5-replacement-headband",
"score": 87.4
}
]
}
}Tags
x402
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