Marketplace · API · x402

api.demandex.dev/v1/opportunities/trending

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…

Endpoint	`https://api.demandex.dev/v1/opportunities/trending`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~456 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xf444abC53f5e1E73CAec7df64D147DDB119514A0
method	GET
last updated	2026-11-13T04:00:55.429Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.demandex.dev/v1/opportunities/trending
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-6fbb1e33cda5049b

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}