Gives you official United States inflation numbers from the government's BLS Consumer Price Index. Ask for the newest reading, a specific month in the past, or a whole range of months, and get back clear percentages for overall inflation and 'core' inflation (which ignores food and energy prices), plus a plain-English summary sentence.
Pay from $0.01 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
ASSESSMENT
updated 3h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 777ms
- avg response
- 777ms
- total checks
- 1
compliance A (11/12)
11 of 12 x402 conformance checks pass. Full checklist below.
price $0.01 (p63 in Finance)
- price (min)
- $0.01
- category percentile (min)
- p63 in Finance
- category percentile (max)
- p38 in Finance
- endpoints / prices
- 1 / 1
- model
- flat
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
WHAT IT DOES
ai-derivedProvides US CPI inflation data from the BLS Consumer Price Index.
- category
- finance
- in
- query params
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /cpi | $0.01 | Base/Solana | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /cpi returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://cpi-report-us.underscoredone.com/cpi'
// 402 response (captured by monitor) · 1 payload · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://cpi-report-us.underscoredone.com/cpi",
"tags": [
"Dates"
],
"mimeType": "application/json",
"description": "Gives you official United States inflation numbers from the government's BLS Consumer Price Index. Ask for the newest reading, a specific month in the past, or a whole range of months, and get back clear percentages for overall inflation and 'core' inflation (which ignores food and energy prices), plus a plain-English summary sentence.",
"serviceName": "US CPI Data & Inflation Report"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"period": "2024-03"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"api_version": "1.0.0"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [],
"properties": {
"end": {
"type": "string",
"description": "The last month of a historical range, written as year-month, like 2024-12. Leave out to end at the newest available month."
},
"start": {
"type": "string",
"description": "The first month of a historical range, written as year-month, like 2023-01. Leave out to start from the earliest available month."
},
"period": {
"type": "string",
"description": "A single month to look up, written as year-month, like 2024-03. Leave this out if you want the newest data or a range instead."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"api_version"
],
"properties": {
"api_version": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}
] UPTIME
RECENT CHECKS
OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/us-cpi-data-inflation-report-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted).
Top buyer 21% of 30d volume. Published as a concentration signal for the reader, not part of the ranking score.
Shared payout address (2 other services). On-chain settlement on this address may include those services, so this reads as operator volume, not service-only.
Shared payout address (2 other services). Buyers on this address may include those of other services on the same address.
COMPLIANCE
11/12 checks pass · grade A- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- response mimeType declared
- served over HTTPS
EMBED THIS BADGE
<a href="https://x402-list.com/services/us-cpi-data-inflation-report-api?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/us-cpi-data-inflation-report-api.svg" alt="US CPI Data & Inflation Report API listed on x402-list" height="28"> </a>
[](https://x402-list.com/services/us-cpi-data-inflation-report-api?utm_source=badge&utm_medium=referral&utm_campaign=embed)
<a href="https://x402-list.com/services/us-cpi-data-inflation-report-api?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/us-cpi-data-inflation-report-api.svg?data=uptime" alt="US CPI Data & Inflation Report API uptime on x402-list" height="28"> </a>