{"uid":"cap_XI6NL_NvzQewutZcozbJZ","slug":"aiskills402-x402-discovery-listing-review-skill-file-8788bae7","name":"AISkills402 x402 Discovery Listing Review Skill File","description":"x402 Listing Review: Catalogs, Scanners, Buyers — Reviews how a paid HTTP resource sold over x402 is advertised to catalogs, scanners and buyer agents, and how the seller's own scripts read those catalogs back, from pasted 402 bodies, OpenAPI documents, discovery files, liveness guard code, catalog presence check scripts and buyer alerts. Flags a tiered tariff advertised as one row (a comparison bot reads the structured amount, not the description), one liveness clock for several catalog rows t…","url":"https://api.aiskills402.com/v1/skills/x402-discovery-listing-review/file?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"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"file":{"name":"SKILL.md","content":"<the SKILL.md file>","encoding":"utf-8"},"name":"x402 Listing Review: Catalogs, Scanners, Buyers","skill":"x402-discovery-listing-review","sha256":"<sha256 of SKILL.md>","receipt":{"tx":"0x<settlement transaction>","settled":true},"version":"1.0.0","redownload":{"url":"<api>/v1/purchases/<token>","token":"<64 hex chars>"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_z8IreD7pWQnDZE7N4Wro3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Delivers a paid SKILL.md file teaching AI agents how to work with x402 discovery catalogs, scanners, and buyers — purchased once via x402 micropayment in USDC on Base.","exampleAgentPrompt":"Buy me the x402 discovery listing review SKILL.md from AISkills402 — pay the $0.05 USDC fee over x402 and give me the file content and my redownload token so I can grab it again later.","exampleUseCases":[{"title":"Onboarding agent to x402 ecosystem","prompt":"I need my agent to understand how x402 discovery, catalogs, scanners, and buyers work — buy the x402 discovery listing review skill file from AISkills402 for $0.05 USDC and load it into the agent's context."},{"title":"Archiving purchased skill for reuse","prompt":"Go ahead and purchase the x402 discovery listing review SKILL.md from AISkills402, then save the redownload token and SHA256 hash so I can verify and re-fetch the latest version any time without paying again."},{"title":"Equipping agent fleet with x402 knowledge","prompt":"I'm setting up several AI agents that need to interact with x402 marketplaces — grab the x402 discovery listing review skill file from AISkills402 once and give me the content plus the redownload URL so I can distribute it to the whole fleet."}],"resultDescription":"Returns a JSON object containing the full UTF-8 content of the SKILL.md file, the skill name and identifier, a SHA256 hash of the file for integrity verification, a version string, a settled on-chain receipt with the Base transaction hash, and a redownload URL and token for future free re-fetches without additional payment.","failureModes":["Payment not included or insufficient — 402 response with payment requirements returned","Payment settled but not yet confirmed on-chain — receipt shows settled:false","Invalid HTTP method used (non-GET/HEAD) — request rejected","Network or API downtime — 5xx error with no file returned","Redownload token expired or invalid when re-fetching — 401 or 404 response"],"whenToPreferThis":"Choose this endpoint when an AI agent needs a tested, versioned SKILL.md document specifically covering x402 discovery, listing review, catalogs, scanners, and buyer workflows — and you want a one-time purchase with permanent redownload rights. Prefer this over scraping documentation or prompting generically when you need a structured, curated skill file that has been validated for agent consumption and is deliverable via x402 micropayment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T00:30:52.000Z","isFirstParty":false,"canonicalSlug":"aiskills402-x402-discovery-listing-review-skill-file-8788bae7"}