Demandex — the index of what people want next.

Community-mined e-commerce demand intelligence for AI agents — pay per call, no signup.

Reddit complaints and purchase-intent, mined into scored, evidence-backed opportunity cards. Every claim traces to a public post. Physical products only.

x402 · USDC on Baseno accounts · no keys~70 communities
first call
# 1. bare call → HTTP 402 with an x402 challenge (USDC on Base)# 2. sign the exact-scheme authorization, retry with PAYMENT-SIGNATURE ($0.01)# 3. HTTP 200 → top-20 trending demand opportunities$ curl -sS https://api.demandex.dev/v1/opportunities/trending

// LIVE INDEX

A real opportunity card

Pulled live from the two free endpoints. The sample is a real, provably-lagged card — every quote links back to the public post it came from.

querying the index

// HOW IT WORKS

Signal in, scored cards out

01

Mine

Watch 80+ communities every 30 minutes for complaints, replacement hunts, and purchase-intent — the raw signal of unmet demand.

02

Classify + cluster

Each post is classified into one of eight demand patterns, then related signals are clustered into a single opportunity.

03

Score with evidence

Every opportunity gets a 0–100 score (frequency × intensity × willingness-to-pay) and carries verbatim quotes with permalinks.

// PRICING

Pay per call, in USDC

No plans, no minimums, no accounts. Two endpoints are free forever; every paid route settles on Base via x402. You are never charged for an error.

RouteMethodWhat you getPrice
/.well-known/hexanonGETHexanon family catalogFREE
/v1/categoriesGETFREE category indexFREE
/v1/sample/opportunityGETFREE sample opportunity cardFREE
/v1/opportunities/trendingGETTrending opportunities (teaser)$0.01
/v1/opportunitiesGETOpportunities in a category$0.02
/v1/opportunityGETFull opportunity card$0.05
/v1/gaugePOSTDemand verdict (cached)$0.03
/v1/gauge/livePOSTDemand verdict (live research)$0.10