{"uid":"cap_lAqmLqE4JVSin1bdgUnHQ","slug":"agentdiet-fact-check-search-e2ce905e","name":"AgentDiet Fact-Check Search","description":"Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.","url":"https://mcp-gateway.agentdiet.dev/v1/fact-check-search?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","POST"],"type":"string"},"queryParams":{"type":"object","properties":{"query":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{},"status":"ok","roi_proof":{"compression_ratio_pct":91.4}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_v7C-QEjsXrfpGHBTfosGF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches for and fact-checks a given query, returning a compressed intelligence summary with verification signals.","exampleAgentPrompt":"Can you fact-check whether 'the Great Wall of China is visible from space' and tell me if that claim is accurate?","exampleUseCases":[{"title":"Verify viral news claim accuracy","prompt":"I saw a headline saying 'Scientists have confirmed water on Mars in liquid form' — can you fact-check that for me and tell me if it's true?"},{"title":"Validate product safety claim","prompt":"Our marketing team wants to say 'our supplement increases energy by 200%' — can you fact-check whether that kind of claim is scientifically supported before we publish it?"},{"title":"Check historical fact for content creation","prompt":"Before I publish my blog post, can you verify whether it's true that Einstein failed math as a child? I want to make sure I'm not spreading misinformation."}],"resultDescription":"Returns a JSON object with a 'data' field containing the fact-check result, a 'status' field ('ok' on success), and an 'roi_proof' object showing compression_ratio_pct (e.g. 91.4%), indicating how much raw source material was distilled into the response.","failureModes":["Missing required 'query' parameter returns an error or empty result","Malformed input type or method enum causes request rejection","Query on highly niche or novel topics may return low-confidence or empty data","Payment failure (USDC on Base) blocks request processing","Rate limiting or gateway overload returns 402 or 5xx errors"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to verify factual claims, cross-check statements against external sources, or provide a truth verdict on a query — especially in workflows where misinformation risk is high and a compressed, authoritative summary is preferred over raw search results. Prefer it over generic web search when structured fact-checking output with a compression proof is needed, and when paying $0.01 USDC per call via x402 on Base is acceptable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:42:39.092Z","isFirstParty":false,"canonicalSlug":"agentdiet-fact-check-search-e2ce905e"}