Latest

{
  "changes": "Selected series, normalized JSON, ascending dates and explicit missing values; latest selects each series independently.",
  "notice": "Source data is available free of charge from the Bank of Canada at https://www.bankofcanada.ca/. This service charges for API integration; no Bank endorsement is implied.",
  "operation": "latest",
  "retrieved_at": "2024-01-05T22:00:00Z",
  "schema_version": "1",
  "series": [
    {
      "alias": "policy",
      "frequency": "business_daily",
      "name": "Target for the overnight rate",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 5
        }
      ],
      "source_id": "V39079",
      "unit": "percent_per_annum"
    },
    {
      "alias": "bond-2y",
      "frequency": "business_daily",
      "name": "Government of Canada 2-year benchmark bond yield",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 4.06
        }
      ],
      "source_id": "BD.CDN.2YR.DQ.YLD",
      "unit": "percent_per_annum"
    },
    {
      "alias": "bond-3y",
      "frequency": "business_daily",
      "name": "Government of Canada 3-year benchmark bond yield",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 3.83
        }
      ],
      "source_id": "BD.CDN.3YR.DQ.YLD",
      "unit": "percent_per_annum"
    },
    {
      "alias": "bond-5y",
      "frequency": "business_daily",
      "name": "Government of Canada 5-year benchmark bond yield",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 3.36
        }
      ],
      "source_id": "BD.CDN.5YR.DQ.YLD",
      "unit": "percent_per_annum"
    },
    {
      "alias": "bond-7y",
      "frequency": "business_daily",
      "name": "Government of Canada 7-year benchmark bond yield",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 3.28
        }
      ],
      "source_id": "BD.CDN.7YR.DQ.YLD",
      "unit": "percent_per_annum"
    },
    {
      "alias": "bond-10y",
      "frequency": "business_daily",
      "name": "Government of Canada 10-year benchmark bond yield",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 3.26
        }
      ],
      "source_id": "BD.CDN.10YR.DQ.YLD",
      "unit": "percent_per_annum"
    },
    {
      "alias": "bond-long",
      "frequency": "business_daily",
      "name": "Government of Canada long-term benchmark bond yield",
      "observations": [
        {
          "date": "2024-01-05",
          "value": 3.19
        }
      ],
      "source_id": "BD.CDN.LONG.DQ.YLD",
      "unit": "percent_per_annum"
    }
  ],
  "source": "Bank of Canada",
  "source_url": "https://www.bankofcanada.ca/",
  "warnings": []
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://canada-rates.use.x402atlas.com/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://canada-rates.use.x402atlas.com/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%2Fcanada-rates.use.x402atlas.com%2Flatest
const res = await pay("https://canada-rates.use.x402atlas.com/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://canada-rates.use.x402atlas.com/latest")
    print(res.status_code, res.text)