{"uid":"cap_BpnG-XRfReTuD1BRzNIVe","slug":"el-ni-o-market-watch-historical-event-composites-7c33b950","name":"El Niño Market Watch – Historical Event Composites","description":"El Niño event composites from El Niño Market Watch: 14 historical events (1951–2026) across 21 commodities, indexed-to-100 price paths around event onset with median/p25/p75 envelopes — the computed asset behind the dashboard charts.","url":"https://trading-perps.vercel.app/api/composites","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","required":[],"properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":{"type":"object","properties":{"p25":{"type":"array"},"p75":{"type":"array"},"events":{"type":"array"},"median":{"type":"array"},"window_months":{"type":"array","items":{"type":"number"}}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qeaF3FCwJ8VAiqb77GtVg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns indexed-to-100 price paths for 21 commodities across 14 historical El Niño events (1951–2026) with median, p25, and p75 envelopes around event onset","exampleAgentPrompt":"Pull the El Niño Market Watch composite data — I want to see the median, p25, and p75 indexed price paths across all 21 commodities for the 14 historical El Niño events so I can benchmark how markets typically move around event onset.","exampleUseCases":[{"title":"Commodity strategy backtesting","prompt":"Get me the full El Niño price composite data — all 21 commodities with their median and quartile envelopes — so I can backtest a long/short strategy that triggers at El Niño onset."},{"title":"Research report on ENSO market impact","prompt":"I'm writing a research report on how El Niño affects commodity markets — can you fetch the indexed price paths from the El Niño Market Watch composites so I can show how prices evolved in the months around event onset across past episodes?"},{"title":"Dashboard chart data retrieval","prompt":"Fetch the underlying composite data behind the El Niño Market Watch dashboard charts — I need the p25, median, and p75 price envelopes for each commodity across the 14 historical events."}],"resultDescription":"A JSON object keyed by commodity, where each entry contains arrays for median, p25, and p75 indexed price paths (normalized to 100 at event onset), a window_months array indicating the month offsets relative to onset, and an events array with the individual historical event price paths across the 14 El Niño episodes from 1951 to 2026.","failureModes":["Payment not provided or insufficient (x402 payment required, 0.1 USDC) — returns 402 Payment Required","Service unavailable or cold-start latency on Vercel serverless — returns 503 or timeout","Data not yet computed for a future event window — returns empty arrays or partial data","Malformed response if upstream NOAA or price data sources are unavailable"],"whenToPreferThis":"Choose this endpoint when you need pre-computed, historically normalized commodity price composites specifically tied to El Niño event onset — particularly for backtesting ENSO-driven trading strategies, building research charts, or comparing current El Niño conditions against historical templates. It is purpose-built for the 21 ENSO-sensitive commodities tracked by El Niño Market Watch and saves the work of manually aggregating and indexing 14 historical episodes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:39:14.677Z","isFirstParty":false}