{"uid":"cap_E-U-_JOI5EyUqn-TqKgtD","slug":"demandex-gauge-a8ea96a8","name":"Demandex Gauge","description":"Community-mined e-commerce demand intelligence for AI agents — scored, evidence-backed opportunity cards mined from Reddit. Pay per call in USDC via x402 on Base. No signup, no API keys.","url":"https://api.demandex.dev/v1/gauge?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"The product/demand query to gauge (3..200 chars). Required."},"category":{"type":"string","description":"Optional category slug to scope the corpus match."}}},"responseSchema":{"type":"json","example":{"cache":"miss","query":"sony xm5 replacement headband","charged":true,"fetchedAt":"2026-07-18T11:45:00.000Z","rationale":"Frequent owner complaints about the OEM headband cracking, with buyers actively hunting for aftermarket replacements.","topEvidence":[{"quote":"My XM5 headband cracked after 8 months and Sony wants $90 for a repair — where can I just buy the band?","upvotes":214,"permalink":"https://reddit.com/r/headphones/comments/abc123"}],"verdictScore":84,"demandTemperature":"hot","relatedOpportunities":[{"slug":"sony-wh1000xm5-replacement-headband","score":87.4}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":{"p10Cents":"3.0000","medianCents":"3.0000","p90Cents":"3.0000","minCents":"3.0000","maxCents":"3.0000","p95Cents":"3.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xRzjl8PFk3IcSURfSs4Fo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Gauges market demand strength for a product or query by scoring it against an opportunity corpus","exampleAgentPrompt":"Can you gauge how strong the market demand is for 'ergonomic standing desk converters' using Demandex? Scope it to the office-furniture category.","exampleUseCases":null,"resultDescription":"Returns a demand gauge result containing a score or signal indicating how strong and active market demand is for the queried product or topic, benchmarked against Demandex's opportunity corpus.","failureModes":["Query string shorter than 3 or longer than 200 characters returns a validation error","Invalid category slug returns an error or empty corpus match","Payment not included or insufficient USDC causes a 402 Payment Required response","Malformed request body (wrong bodyType or missing required fields) returns a 400 error","Query too generic may return a low-confidence or zero demand score"],"whenToPreferThis":"Use this endpoint when you need to quantitatively gauge how much market demand exists for a specific product concept, niche, or keyword before investing further. Prefer it over browsing trend sites when you need a structured, scored demand signal from a curated opportunity corpus, especially as a precursor to fetching full opportunity cards via sibling endpoints.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:02:36.802Z","isFirstParty":false,"canonicalSlug":"demandex-gauge-a8ea96a8"}