# Losbeto Brazil Macro Data (BCB/B3) — As-Of Snapshot

> Losbeto Brazil Macro Data (BCB/B3) — As-Of Snapshot is a paid API for AI agents from api.losbeto.xyz, paid per call via x402, $0.09/call, status unknown (last checked 2026-09-14).

Returns a Brazil macro/financial market data snapshot as of a specified date, sourcing data from BCB (Banco Central do Brasil) and B3 (Brazilian exchange), paid per-call via x402.

## Facts

- Endpoint: GET https://api.losbeto.xyz/br-asof
- Price: $0.09/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/losbeto-brazil-macro-data-bcb-b3-as-of-snapshot-7cfa60ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2U_juPHRiVTyOkwWsyayw

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability losbeto-brazil-macro-data-bcb-b3-as-of-snapshot-7cfa60ae
```

Example prompt: Pull me a Brazil macro snapshot from Losbeto as of March 31, 2024 — I need BCB/B3 data like the Selic rate and key economic indicators for that date.

## When to prefer this

Choose this endpoint when you need a historical or current point-in-time snapshot of Brazil-specific macroeconomic data (BCB, B3) without setting up API keys or accounts. It is ideal for agents doing EM research, backtesting, or enriching financial models with Brazilian data, and when pay-per-call micropayment via x402/USDC is acceptable or preferred over subscription billing.

## Known failure modes

- Date out of available historical range — no data returned for that as-of date
- Payment not processed or insufficient USDC balance — 402 payment required response
- Invalid date format in query parameter — malformed request error
- Data source unavailable for that date (BCB/B3 data gap) — empty or partial response

## How this service works

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.

## Output

A JSON object containing a point-in-time snapshot of Brazilian macroeconomic and financial market data sourced from BCB and B3, including indicators such as interest rates (Selic), FX rates, and other macro series, as of the requested date.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "properties": {
    "queryParams": {
     "properties": {
      "date": {
       "description": "date parameter",
       "type": "string"
      },
      "series": {
       "description": "series parameter",
       "type": "string"
      }
     },
     "type": "object"
    }
   },
   "type": "object"
  },
  "output": {
   "properties": {
    "example": {
     "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 of the archive at /br-pit-proof.",
     "type": "object"
    }
   },
   "type": "object"
  }
 },
 "required": [
  "input"
 ],
 "type": "object"
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/losbeto-brazil-macro-data-bcb-b3-as-of-snapshot-7cfa60ae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.losbeto.xyz](https://www.zero.xyz/host/api.losbeto.xyz/llms.txt)