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DemandEx Trending Opportunities Index
x402
DemandEx Trending Opportunities Index is a paid API for AI agents from api.demandex.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns the top 20 trending market opportunity cards ranked by score as lightweight teasers, including id, slug, title, category, score, signalCount, and lastSeen.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid ($0.01 USDC via x402). Returns the top 20 active opportunity cards by score as TEASERS — { id, slug, title, category, score, signalCount, lastSeen } only. No evidence and no productAngle (buy GET /v1/opportunity for the full card). While the index is still warming and no active cards exist yet, you get a no-charge 503 corpus_warming (never an empty charged list) — poll the free GET /v1/categories to see when cards go live. Compute-first / settle-after — you are not charged on any error. Re…
Output
An array of up to 20 opportunity teaser objects, each containing: id, slug, title, category, score, signalCount, and lastSeen. No full evidence or productAngle data is included — those require a separate paid call to GET /v1/opportunity. If the index is still warming, returns a 503 corpus_warming status with no charge.
Example use cases
Example prompt
“Show me what the top trending market opportunities are right now — I want to see the highest-scored demand signals so I can decide which ones to dig into further.”
Technical details
Endpoint
GEThttps://api.demandex.dev/v1/opportunities/trendingWhen to prefer
Use this endpoint when you need a quick ranked overview of the most active market opportunities without paying for full card detail. It is the cheapest entry point into the DemandEx corpus ($0.01 USDC) and ideal for dashboards, initial discovery, or deciding which opportunities to investigate with the more expensive GET /v1/opportunity full-card endpoint.
Side effects
- 503 corpus_warming — index is still building, no active cards exist yet; poll GET /v1/categories to see when cards go live; no charge incurred
- Payment failure — x402 payment of $0.01 USDC not completed; no data returned and no charge applied
- Network timeout or server error — no charge incurred per compute-first/settle-after policy
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"charged": true,
"fetchedAt": "2026-07-18T11:45:00.000Z",
"opportunities": [
{
"id": "ckxxxx",
"slug": "sony-wh1000xm5-replacement-headband",
"score": 87.4,
"title": "Sony WH-1000XM5 replacement headband",
"category": "audio",
"lastSeen": "2026-07-18T10:00:00.000Z",
"signalCount": 34
}
]
}
}Tags
x402
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