the402 endpoint detail

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api.demandex.dev opportunities trending

https://api.demandex.dev/v1/opportunities/trending

payable

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/catego

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xf444abC53f5e1E73CAec7df64D147DDB119514A0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
205 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:09:38.253Z (1d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.demandex.dev%2Fv1%2Fopportunities%2Ftrending"