{"uid":"cap_w-fqycsUcg5JURCrjNwXj","slug":"chronicapulse-timeline-narrative-ea77ea2d","name":"ChronicaPulse Timeline Narrative","description":"Chronological timeline for genealogy and research agents. Returns a narrative for a person, place, or topic across historical newspaper archives.","url":"https://chronicapulse.theaslangroupllc.com/api/chronica/timeline?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","errors":{"400":{"example":{"error":"subject parameter required"},"description":"Invalid or missing parameter(s) — required: subject. Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."},"402":{"description":"Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."},"500":{"example":{"error":"upstream_failed"},"description":"Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.15","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":{"p10Cents":"15.0000","medianCents":"15.0000","p90Cents":"15.0000","minCents":"15.0000","maxCents":"15.0000","p95Cents":"15.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.15/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nhO2oug5T0oAztvI1HGSk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.15","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a chronological narrative timeline for a person, place, or topic drawn from historical newspaper archives","exampleAgentPrompt":"Pull a chronological timeline narrative for Margaret O'Brien from Boston, Massachusetts — I'm doing genealogy research and want to see how she appears in historical newspaper archives from roughly 1890 to 1940.","exampleUseCases":null,"resultDescription":"A narrative timeline of dated events and references to a person, place, or topic as they appear across historical newspaper archives, presented in chronological order with context from the coverage.","failureModes":["No newspaper archive records found for the specified subject or date range","Ambiguous name or place matches multiple subjects, requiring disambiguation","Date range outside available archive coverage","Rate-limited or payment validation failure (x402)","Malformed query parameters return 400 error"],"whenToPreferThis":"Use this endpoint when you need a synthesized, chronological narrative view of how a person, place, or topic appeared in historical newspapers over time — especially for genealogy, biography, or local history research. Prefer this over a raw search endpoint when you want a readable, time-ordered story rather than a list of individual clippings.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T00:33:58.723Z","isFirstParty":false,"canonicalSlug":"chronicapulse-timeline-narrative-ea77ea2d"}