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BR Data API – PTAX Exchange Rate
x402
BR Data API – PTAX Exchange Rate is a paid API for AI agents from brasil-data-x402.wagner-proc.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).
Returns the official PTAX exchange rate (buy and sell BRL prices) for a given currency and date, as published by Brazil's Banco Central.
Price / call$0.005
Success—
StatusUnknown
How this service works
Clean, normalized Brazilian public data (CNPJ, CEP, BCB rates, PTAX, holidays/business days, banks/ISPB) for AI agents. Paid endpoints use x402 (HTTP 402, USDC) — no signup or API key. Not affiliated with Receita Federal, Banco Central or Correios.
Output
A JSON object containing the currency code, the official BCB buy rate in BRL, the official BCB sell rate in BRL, and the quote date (e.g. {"currency":"USD","buy_brl":4.9929,"sell_brl":4.9935,"quote_date":"2026-10-07"}).
Example use cases
Daily FX rate for invoicing
“I need the official PTAX USD/BRL buy and sell rates for today so I can calculate the correct BRL amount on a USD invoice for a Brazilian client.”
Historical rate for accounting reconciliation
“Can you pull the official Banco Central PTAX sell rate for EUR on March 15, 2025? I need it to reconcile a foreign currency transaction in our books.”
Automated FX monitoring agent
“Every weekday, fetch the official PTAX rate for USD from Banco Central and let me know if the sell rate moved more than 1% from the previous day.”
Technical details
Endpoint
GEThttps://brasil-data-x402.wagner-proc.workers.dev/v1/rates/ptax?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the official BCB PTAX exchange rate for BRL — the legally recognized rate used for Brazilian tax, accounting, and financial compliance purposes. Prefer this over generic FX APIs when the authoritative Banco Central figure is required, especially for invoicing, tax filings, or regulatory reporting in Brazil.
Side effects
- No PTAX rate available for the requested date (e.g. weekends or Brazilian holidays) — may return empty or error response
- Invalid or unsupported currency code — returns error
- Future dates may not have rates published yet
- Rate limit or payment failure via x402 if USDC payment is not properly handled
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"buy_brl": 4.9929,
"currency": "USD",
"sell_brl": 4.9935,
"quote_date": "2026-10-07"
}
}Tags
x402
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