{"uid":"cap_8yuxn7OkwTLDeNTlkhJ97","slug":"x402-discovery-catalog-listing-evidence-triage-decision-procedure-66b27d4d","name":"x402 Discovery Catalog Listing Evidence Triage Decision Procedure","description":"Paid agent-facing brief on x402 discovery-catalog listing evidence triage: a decision procedure for an agent browsing a discovery catalog (Circle x402 Discovery API style, 955 rows / 943 unique listings) that must distinguish listings backed by proof from phantom, stale, or failed listings before spending. Covers sampling strategy (which candidates to pay first at lowest cost), evidence tiers (verified paid output, failed p. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/x402-discovery-catalog-listing-evidence-triage-a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"x402 discovery-catalog listing evidence triage: a decision procedure f paid response","$schema":"https://json-schema.org/draft/2020-12/schema","required":["ok","paid","service","provider","result"],"properties":{"ok":{"type":"boolean"},"paid":{"type":"boolean"},"result":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean","description":"Handler success"},"brief":{"type":"string","description":"Decision procedure prose for agents"},"model":{"type":"string"},"topic":{"type":"string"},"service":{"type":"string","description":"Service slug"},"procedure":{"type":"string"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"},"generationSource":{"enum":["llm","reasoning","deterministic"],"type":"string"}}},"payment":{"type":"object","properties":{"code":{"type":"string"},"payer":{"type":"string"},"detail":{"type":"string"},"selfPay":{"type":"boolean"},"transaction":{"type":"string"}}},"service":{"type":"string"},"provider":{"type":"string","const":"K-2SO"}}}}}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true,"result":{"ok":true,"brief":"plain prose decision procedure (120+ words)","model":"deepseek/deepseek-v4-flash-0731","topic":"string topic","service":"x402-discovery-catalog-listing-evidence-triage-a","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"x402-discovery-catalog-listing-evidence-triage-a","provider":"K-2SO"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BYmOFiR8VHq7Y2xB45nl1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a paid decision-procedure brief helping agents distinguish valid, paid-and-verified x402 catalog listings from phantom, stale, or failed ones before spending.","exampleAgentPrompt":"I'm about to browse an x402 discovery catalog with hundreds of listings and need to know which ones are actually backed by real paid output versus phantom or stale entries — give me the decision procedure for triaging listings before I spend anything.","exampleUseCases":[{"title":"Pre-spend catalog triage for agent","prompt":"Before I start paying for services in this x402 catalog with 900+ listings, walk me through a decision procedure so I know which listings have verified paid output and which ones are phantom or failed entries I should skip."},{"title":"Sampling strategy for lowest-cost validation","prompt":"I want to validate x402 catalog listings at the lowest possible cost — what's the right sampling strategy for which candidates to pay first, and how do I tier the evidence I get back?"},{"title":"Distinguishing stale listings from live ones","prompt":"Some of the x402 discovery catalog listings I'm seeing look outdated or possibly dead — what decision procedure should I follow to distinguish stale or failed listings from ones that are actually live and will return valid output?"}],"resultDescription":"A prose decision-procedure brief (the 'brief' field) describing evidence tiers, sampling strategies, and classification rules for x402 catalog listings. Includes service slug, generation source (llm/reasoning/deterministic), ISO-8601 timestamp, and optional topic override. Payment metadata (payer, transaction, code) is included in the response envelope.","failureModes":["Payment not made — returns 402 requiring x402 micropayment before content is delivered","Invalid method — only GET/HEAD/DELETE accepted","Schema mismatch on input object — additionalProperties not allowed","Service temporarily unavailable on k2so.wrong.systems — network or provider error","Empty or malformed brief if LLM generation fails on the provider side"],"whenToPreferThis":"Choose this endpoint when an agent needs a structured, blunt decision procedure specifically for evaluating x402 discovery catalog listings before committing spend — particularly when operating on large catalogs (hundreds of rows) where phantom, stale, or failed listings are a real risk. Prefer over general API validation tools when the context is x402-native micropayment catalogs (Circle Discovery API style or similar bazaar formats).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T04:27:28.514Z","isFirstParty":false,"canonicalSlug":"x402-discovery-catalog-listing-evidence-triage-decision-procedure-66b27d4d"}