16trust / 100
Us Cpi
by Vextorium in Markets & finance
x402 APIFailing, checked 3 h ago
US inflation (CPI-U): year-on-year headline, core (ex food and energy), energy and food rates, month by month. US Bureau of Labor Statistics, public domain.
POST https://api.vextorium.com/v1/us-cpi
Last 30 days
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Status and outage history · Atom feed
- Uptime
- 0.0%
- Response time
- - typical, - slowest 5%
- Last check
- 3 h ago: Amount "0.003" is not in atomic token units
- Next check
- any minute now
How to call it
POST https://api.vextorium.com/v1/us-cpi
Each call costs $0.003 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.
POST https://api.vextorium.com/v1/us-cpi
content-type: application/json
{
"months": 6
}Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
months | integer | No | 1-24 (default 12) |
Example response
The provider's example. We can't check it without paying.
Example response, 75 lines
{
"last": {
"core_cpi": {
"index": 338.041,
"month": "2026-08",
"year_over_year_pct": 2.45
},
"energy_cpi": {
"index": 329.351,
"month": "2026-08",
"year_over_year_pct": 16.28
},
"foods_cpi": {
"index": 350.418,
"month": "2026-08",
"year_over_year_pct": 2.67
},
"headline_cpi": {
"index": 334.98,
"month": "2026-08",
"year_over_year_pct": 3.4
}
},
"series": {
"core_cpi": [
{
"index": 334.391,
"month": "2026-03",
"year_over_year_pct": 2.6
},
{
"index": 335.803,
"month": "2026-04",
"year_over_year_pct": 2.75
}
],
"energy_cpi": [
{
"index": 310.28,
"month": "2026-03",
"year_over_year_pct": 12.53
},
{
"index": 329.907,
"month": "2026-04",
"year_over_year_pct": 17.87
}
],
"foods_cpi": [
{
"index": 346.796,
"month": "2026-03",
"year_over_year_pct": 2.68
},
{
"index": 348.499,
"month": "2026-04",
"year_over_year_pct": 3.18
}
],
"headline_cpi": [
{
"index": 330.213,
"month": "2026-03",
"year_over_year_pct": 3.26
},
{
"index": 333.02,
"month": "2026-04",
"year_over_year_pct": 3.81
}
]
},
"source": "U.S. Bureau of Labor Statistics (CPI-U, not seasonally adjusted)"
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/us-cpi' \
-H 'content-type: application/json' \
--data-raw '{"months":6}'
# 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 - -X POST 'https://api.vextorium.com/v1/us-cpi' \
-H 'content-type: application/json' \
--data-raw '{"months":6}' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fus-cpi&method=POST
const res = await pay("https://api.vextorium.com/v1/us-cpi", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"months": 6
}),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.post(
"https://api.vextorium.com/v1/us-cpi",
json={
"months": 6,
},
)
print(res.status_code, res.text)Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 3 h ago | Amount "0.003" is not in atomic token units | 402 | 104 ms | $0.003 |
| 8 h ago | Amount "0.003" is not in atomic token units | 402 | 238 ms | $0.003 |
| 12 h ago | Amount "0.003" is not in atomic token units | 402 | 300 ms | $0.003 |
| 17 h ago | Amount "0.003" is not in atomic token units | 402 | 75 ms | $0.003 |
| 21 h ago | Amount "0.003" is not in atomic token units | 402 | 106 ms | $0.003 |
| 26 h ago | Amount "0.003" is not in atomic token units | 402 | 114 ms | $0.003 |
| 30 h ago | Amount "0.003" is not in atomic token units | 402 | 97 ms | $0.003 |
| 34 h ago | Amount "0.003" is not in atomic token units | 402 | 249 ms | $0.003 |
| 38 h ago | Amount "0.003" is not in atomic token units | 402 | 77 ms | $0.003 |
| 42 h ago | Amount "0.003" is not in atomic token units | 402 | 74 ms | $0.003 |
| 46 h ago | Amount "0.003" is not in atomic token units | 402 | 93 ms | $0.003 |
| 2 days ago | Amount "0.003" is not in atomic token units | 402 | 222 ms | $0.003 |
| 2 days ago | Amount "0.003" is not in atomic token units | 402 | 81 ms | $0.003 |
| 2 days ago | Amount "0.003" is not in atomic token units | 402 | 241 ms | $0.003 |
| 3 days ago | Amount "0.003" is not in atomic token units | 402 | 90 ms | $0.003 |