{"uid":"cap_ut_ISVKErkuttOwgUrfnj","slug":"fda-adverse-event-reports-55bc97fb","name":"FDA Adverse Event Reports","description":"Adverse event reports for a drug or medical device from the FDA's FAERS and MAUDE systems: total report count and the most frequently reported reactions, ranked. Returns the interpretation caveat with the data — these are voluntary reports, a report does not establish causation, and counts scale with how widely a product is used.","url":"https://x402-filings.datalayer.workers.dev/v1/fda/adverse-events?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","properties":{"drug":{"type":"string","examples":["ibuprofen"],"description":"Brand or generic drug name. Either drug or device is required."},"limit":{"type":"integer","examples":[10],"description":"Max ranked reactions, 1-50. Default 10."},"device":{"type":"string","examples":["insulin pump"],"description":"Device generic name."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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":"unknown","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_RcUv1QM0jDAT8H_FxqLXL","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 ranked adverse event reaction counts for a drug or medical device from the FDA FAERS and MAUDE systems, with report totals and interpretation caveats.","exampleAgentPrompt":"Pull the top 20 most frequently reported adverse reactions for ibuprofen from the FDA FAERS database and include the total report count.","exampleUseCases":[{"title":"Drug safety due diligence for investors","prompt":"What are the top 15 adverse reactions reported in FDA FAERS for Keytruda, and how many total reports are there? I need this for a pharma investment brief."},{"title":"Medical device risk review","prompt":"Look up the most commonly reported adverse events for insulin pumps in the FDA's MAUDE system — give me the top 10 reactions ranked by frequency."},{"title":"Patient medication research","prompt":"Can you check the FDA adverse event database for methotrexate and tell me what the top 5 most reported reactions are and how many reports exist total?"}],"resultDescription":"Returns the total number of adverse event reports filed for the queried drug or device, a ranked list of the most frequently reported reactions (up to the requested limit), and a standard interpretation caveat noting that reports are voluntary, do not establish causation, and that counts scale with product usage prevalence.","failureModes":["Drug or device name not found in FDA systems — returns empty results or zero reports","Ambiguous name matching multiple drugs or devices — may return aggregated or unexpected results","Limit parameter out of range (must be 1–50) — returns validation error","Neither drug nor device parameter provided — required field missing error","FDA data source temporarily unavailable — upstream service error"],"whenToPreferThis":"Use this endpoint when you need structured, ranked FDA pharmacovigilance signal data for a specific drug or medical device without building a direct FDA API integration. It is ideal for safety due diligence, regulatory research, competitive intelligence, or patient-facing drug information tools. Prefer this over direct FDA API access when you want pre-ranked reaction data with caveats included and per-call micropayment billing via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T06:39:58.085Z","isFirstParty":false,"canonicalSlug":"fda-adverse-event-reports-55bc97fb"}