{"uid":"cap_3g9o6DITKCIfS05meLbMZ","slug":"quietsignal-directory-gaps-a7c14bc0","name":"QuietSignal Directory Gaps","description":"QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.","url":"https://83-29-153-50.sslip.io/v1/directory-gaps?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"limit":{"type":"integer","maximum":100,"minimum":1,"description":"Maximum number of gap records to return"},"category":{"type":"string","maxLength":80,"minLength":1,"description":"Optional case-insensitive directory category filter"},"min_endpoints":{"type":"integer","maximum":1000,"minimum":1,"description":"Only return gaps with at least this many listed endpoints"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"schema":"directory-gaps/v1","source":{"url":"https://402index.io/api/v1/opportunities","provider":"402 Index"},"summary":{"total_endpoints":0,"healthy_endpoints":0,"unhealthy_endpoints":0},"disclaimer":"Directory health-gap facts are not evidence of buyer demand, revenue, safety, or profit.","opportunities":[]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NzORVt7S-PrxJ56pbq6w3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a rollup of directory health-gap facts — categories and endpoints that are underserved or unhealthy in the x402/HTTP 402 API directory.","exampleAgentPrompt":"Can you pull the QuietSignal directory gaps data and show me the top 20 categories where x402 APIs are underserved — specifically categories that have at least 5 listed endpoints?","exampleUseCases":[{"title":"Identifying underserved API marketplace categories","prompt":"Show me the directory gaps in the x402 ecosystem — I want to know which categories have the most unhealthy or missing endpoints so I can figure out where there's room to build a new paid API."},{"title":"Filtering gaps by a specific domain","prompt":"Pull the QuietSignal directory gaps for the 'finance' category and return up to 50 records so I can see which finance-related API slots are unhealthy or unoccupied."},{"title":"Finding high-traffic gap opportunities","prompt":"Give me directory gaps that have at least 20 listed endpoints — I want to focus on categories that already have some activity but still show significant health problems."}],"resultDescription":"A JSON object containing a schema version, the source URL and provider (402index.io), a summary with total, healthy, and unhealthy endpoint counts, a disclaimer about the data's limitations, and an array of opportunity/gap records filtered by the requested category and minimum endpoint count.","failureModes":["No matching gaps found — returns empty opportunities array if filters are too restrictive","Invalid category string — may return empty results if the category name doesn't match any known directory entry","limit or min_endpoints out of range — API returns a validation error if values exceed allowed bounds (limit max 100, min_endpoints max 1000)","Upstream 402 Index unavailable — endpoint may return an error or stale data if the source provider is unreachable","Payment failure — HTTP 402 response if the $0.02 USDC payment over Base is not completed correctly"],"whenToPreferThis":"Use this endpoint when you need a machine-readable snapshot of the x402/HTTP 402 API directory's health gaps — specifically to identify categories that are underserved, have unhealthy endpoints, or represent open opportunities for new API builders. Prefer this over general web search or manual directory browsing when you want structured, filterable data about the x402 ecosystem. It is read-only and costs $0.02 USDC per call, making it suitable for periodic opportunity scans or automated market-gap analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T06:25:06.047Z","isFirstParty":false,"canonicalSlug":"quietsignal-directory-gaps-a7c14bc0"}