Selic Latest

{
  "changes": "Selected series; dates normalized to ISO days or months; decimal strings parsed as numbers; observations sorted ascending; original numeric values unchanged; no interpolation or derived inflation calculations.",
  "method_url": "https://brazil-macro.use.x402atlas.com/data-method",
  "notice": "Source: Banco Central do Brasil SGS; Selic target by Copom, IPCA by IBGE. Selic database is available under ODbL 1.0; IPCA reproduction follows BCB terms with source attribution and information integrity. No affiliation or endorsement. Source data is free; the fee is for API integration, not exclusive data rights.",
  "operation": "latest",
  "retrieved_at": "2024-04-15T12:00:00Z",
  "schema_version": "1",
  "series": [
    {
      "alias": "selic",
      "attribution": "Banco Central do Brasil / Copom",
      "frequency": "daily",
      "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
      "name": "Selic policy target",
      "observations": [
        {
          "period": "2024-01-05",
          "value": 11.75
        }
      ],
      "source_id": "432",
      "unit": "percent_per_annum"
    }
  ],
  "source": "Banco Central do Brasil SGS",
  "source_request_url": "https://api.bcb.gov.br/dados/serie/bcdata.sgs.432/dados/ultimos/1?formato=json",
  "source_url": "https://www.bcb.gov.br/estatisticas",
  "warnings": [
    "Source supplies no publication timestamp or revision flag; observations may be revised. Retrieval time is not observation freshness."
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://brazil-macro.use.x402atlas.com/selic/latest'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://brazil-macro.use.x402atlas.com/selic/latest' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbrazil-macro.use.x402atlas.com%2Fselic%2Flatest
const res = await pay("https://brazil-macro.use.x402atlas.com/selic/latest");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://brazil-macro.use.x402atlas.com/selic/latest")
    print(res.status_code, res.text)