{"uid":"cap_azp63feUNNNlts8mZ4wxR","slug":"losbeto-brazil-macro-as-of-point-in-time-data-c733b5aa","name":"Losbeto Brazil Macro As-Of (Point-in-Time) Data","description":"OpenAI-compatible LLM gateway at $0.005/call — change base_url, pay in USDC. Plus pay-per-call market data: multi-oracle price consensus, sentiment, forex, equities, commodities, Brazil macro (BCB/B3) and crypto. No API keys, no accounts. USDC on Base, Solana and Algorand via x402.","url":"https://markets.losbeto.xyz/br-asof?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","properties":{"queryParams":{"type":"object","required":["date","series"],"properties":{"date":{"type":"string","description":"date parameter"},"series":{"type":"string","description":"series parameter"}}}}},"output":{"type":"object","properties":{"example":{"type":"object","description":"What was this Brazilian macro series worth AS KNOWN ON a past date — not as revised since. Selic, CDI, IPCA 12m, IGP-M, PTAX and EUR/BRL, returned at the vintage that was actually published on ?date=YYYY-MM-DD. Backtests built on today's revised series contain look-ahead bias; this endpoint removes it. Every value carries its Merkle leaf and the day's Ed25519-signed root. Free proof..."}}}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.09","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":"$0.09/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.09","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.09","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SN5suOvIW8IxbFQeHBHRH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.09","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a historical Brazilian macro series value as it was actually published on a given past date, eliminating look-ahead bias for backtesting","exampleAgentPrompt":"What was Brazil's IPCA 12-month inflation figure as officially published on 2022-06-15 — give me the vintage value that was actually known on that date, not the revised number, with its cryptographic proof.","exampleUseCases":[{"title":"Backtest a Brazilian rates strategy","prompt":"I'm backtesting a fixed-income strategy on Brazilian assets and need the Selic rate that was actually published on 2021-03-17 — not the revised value, but what the market actually saw that day. Can you fetch that point-in-time figure?"},{"title":"Verify historical PTAX for trade settlement","prompt":"We had a USD/BRL forward contract that settled on 2020-11-10 and I need to confirm the official PTAX rate as published by BCB on that exact date, including the cryptographic proof of authenticity."},{"title":"Audit inflation assumptions in a past model","prompt":"Our risk model from early 2023 used an IPCA 12-month figure — can you pull what the IPCA 12m reading was as known on 2023-01-31 so I can verify we didn't accidentally use a revised number in our calculations?"}],"resultDescription":"A JSON object containing the requested Brazilian macro series value (e.g. Selic, CDI, IPCA 12m, IGP-M, PTAX, EUR/BRL) as it was published on the specified date — the original vintage, not subsequently revised data. Includes the Merkle leaf for the data point and the Ed25519-signed Merkle root for that day, enabling cryptographic verification of the historical archive.","failureModes":["Missing required query params (date or series) returns a 400 error","Date outside available archive range returns no data or error","Invalid series identifier returns an error or empty result","Payment not made in USDC via x402 returns a 402 Payment Required response","Date in future or series with no publication on that date returns null/empty value"],"whenToPreferThis":"Choose this endpoint when you need Brazilian macro data (Selic, CDI, IPCA, IGP-M, PTAX, EUR/BRL) exactly as it was published on a specific historical date — essential for rigorous financial backtesting that must avoid look-ahead bias from data revisions. Prefer over general macro APIs when cryptographic proof-of-vintage is required for audit or compliance purposes, or when you specifically need BCB/B3 data with Merkle-proof integrity guarantees. Not appropriate for current/live rate lookups.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T06:39:37.742Z","isFirstParty":false,"canonicalSlug":"losbeto-brazil-macro-as-of-point-in-time-data-c733b5aa"}