ToolVet
73trust / 100

Rates Jgb Curve

by api.agentfeeds.jp in Markets & finance

x402 APIPassing, checked 2 h ago

Japanese government bond yield curve (1 to 40 years, 15 tenors) from the Ministry of Finance's daily reference series. Complements boj.rates (the short-end policy-rate proxy) with the long end of the curve. Factual published data only; not investment advice or a rate forecast.

GET
https://api.agentfeeds.jp/v1/jp/rates/jgb_curve
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
838 ms
943 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://api.agentfeeds.jp/v1/jp/rates/jgb_curve

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://api.agentfeeds.jp/v1/jp/rates/jgb_curve

Parameters

ParameterTypeRequiredDescription
datestringNooptional ISO date; defaults to the most recent published business day

Example response

The provider's example. We can't check it without paying.

{
  "data": {
    "date": "2026-07-24",
    "maturities": {
      "10y": 2.86,
      "1y": 1.18,
      "20y": 3.8,
      "2y": 1.43,
      "30y": 4,
      "3y": 1.59,
      "40y": 3.94,
      "5y": 2.04
    },
    "unit": "percent"
  },
  "kind": "factual_data",
  "product": "jp.rates.jgb_curve"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.agentfeeds.jp/v1/jp/rates/jgb_curve'

# 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://api.agentfeeds.jp/v1/jp/rates/jgb_curve' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentfeeds.jp%2Fv1%2Fjp%2Frates%2Fjgb_curve
const res = await pay("https://api.agentfeeds.jp/v1/jp/rates/jgb_curve");
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.agentfeeds.jp/v1/jp/rates/jgb_curve")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402833 ms$0.002
6 h agoPassed402734 ms$0.002
10 h agoPassed402875 ms$0.002
14 h agoPassed402887 ms$0.002
18 h agoPassed402726 ms$0.002
Show 10 older checks
22 h agoPassed402851 ms$0.002
26 h agoPassed4021.3 s$0.002
30 h agoPassed402893 ms$0.002
34 h agoPassed402943 ms$0.002
37 h agoPassed402841 ms$0.002
41 h agoPassed402832 ms$0.002
44 h agoPassed402838 ms$0.002
2 days agoPassed402808 ms$0.002
2 days agoPassed402854 ms$0.002
2 days agoPassed402874 ms$0.002