CPI Inflation API

GET

Track monthly US inflation and year-over-year rate changes.

CPI Inflation provides monthly Consumer Price Index data broken down by category including food, housing, transportation, medical care, and more. Includes year-over-year inflation rates for each category.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/cpiinflation

Verification

Format

No key required to try it. Get a key to use it in your app.

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "yearMonth": "2026-08",
    "year": 2026,
    "month": 8,
    "category": "food",
    "index": 350.418,
    "yearOverYearChange": 2.67
  }
}

About the CPI Inflation API

CPI Inflation sources data directly from the Bureau of Labor Statistics (BLS) API, the official source for US inflation data. Monthly data is available back to 1947, with category breakdowns for detailed inflation analysis.

What people use it for

Inflation Tracking: Monitor inflation trends across different spending categories
Economic Analysis: Analyze inflation patterns for economic research and forecasting
Cost Adjustments: Calculate inflation adjustments for contracts, salaries, and pricing
Investment Research: Factor inflation data into investment decisions and real returns

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Other ways to use CPI Inflation

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.on VerveContext

Questions.

Common questions about the CPI Inflation API.

Read the docs →

Where does the inflation data come from?

Data is sourced directly from the Bureau of Labor Statistics (BLS) API, the official source for United States inflation statistics. Updates are published monthly as official BLS releases become available.

How far back does the historical CPI data go?

Monthly CPI records go back to 1947. You can query any specific historical month using a YYYY-MM date format, or omit the date parameter entirely to fetch the most recent available report.

Do I get category breakdowns like food and housing on the Free plan?

No, category breakdowns for food, housing, transportation, medical care, gasoline, and electricity require a paid plan. The Free plan returns the overall index and year-over-year rate across all items. Any paid plan unlocks every individual category.

Which plan fits 10,000 inflation lookups a month?

The Starter plan covers that volume with plenty of room to spare. At 2 credits per lookup, 10,000 requests consume 20,000 credits, using one-tenth of the Starter tier's 200,000 monthly credits. That works out to about $0.0003 per call, or $0.30 per 1,000 calls. The Free plan provides 100 calls each month.

Can I use this inflation data in a commercial financial tool?

Yes, you can integrate the data into commercial software, research tools, and customer reports on any paid plan. The Free plan is limited to non-commercial evaluation. You may not resell or redistribute the raw data as-is.

Request parameters — GET /v1/cpiinflation

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Optional

Parameter	Type	Example	Description
`date`Optional	string	`2023-06`	Optional date in YYYY-MM format for historical lookup. Omit for current data. date
`category`Optional	string	`food`	Optional category filter: all, food, housing, apparel, transportation, medical, recreation, education, gasoline, electricity

Example request

1
2

curl "https://api.apiverve.com/v1/cpiinflation?date=2023-06&category=food" \
  -H "x-api-key: YOUR_API_KEY"

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Response — GET /v1/cpiinflation

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "yearMonth": "2026-08",
    "year": 2026,
    "month": 8,
    "category": "food",
    "index": 350.418,
    "yearOverYearChange": 2.67
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`yearMonth`	string	`"2026-08"`	Year and month in YYYY-MM format for the data
`year`	number	`2026`	The year of the CPI data point
`month`	number	`8`	The month (1-12) of the CPI data
`category`	string	`"food"`	The category requested (single-category lookups only)
`index`Premium	number	`350.418`	CPI index value for the requested category (single-category lookups only)
`yearOverYearChange`Premium	number	`2.67`	Year-over-year change in percent for the requested category (single-category lookups only)

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 2 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	CPI Inflation calls	Per 1,000 calls
Free	Free	200	100	Free
Starter	$29.99	200,000	100,000	$0.30
Pro	$99.99	1,000,000	500,000	$0.20
Mega	$299.99	4,000,000	2,000,000	$0.15

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — GET /v1/cpiinflation

No SDK to install — this is a plain HTTPS call to /v1/cpiinflation with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

1
2

curl "https://api.apiverve.com/v1/cpiinflation" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/cpiinflation-apiSource, issues and the examples this page is built from.ReferenceCPI Inflation API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/cpiinflationnpm APIVerve.API.CPIInflationNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — GET /v1/cpiinflation

Install the Node.js SDK, then call the CPI Inflation API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/cpiinflation

Node.js

const res = await fetch("https://api.apiverve.com/v1/cpiinflation", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/cpiinflationThe published Node.js client, versioned and signed.GitHubapiverve/cpiinflation-apiSource, issues and the examples this page is built from.ReferenceCPI Inflation API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

APIVerve.API.CPIInflationNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — GET /v1/cpiinflation

No SDK to install — this is a plain HTTPS call to /v1/cpiinflation with your key in the x-api-key header. Swap in a real key and it runs as-is.

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/cpiinflation",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

Also published for

@apiverve/cpiinflationnpm APIVerve.API.CPIInflationNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — GET /v1/cpiinflation

Install the C# / .NET SDK, then call the CPI Inflation API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.CPIInflation

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/cpiinflation");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.CPIInflationThe published C# / .NET client, versioned and signed.GitHubapiverve/cpiinflation-apiSource, issues and the examples this page is built from.ReferenceCPI Inflation API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/cpiinflationnpm

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — GET /v1/cpiinflation

No SDK to install — this is a plain HTTPS call to /v1/cpiinflation with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/cpiinflation", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/cpiinflationnpm APIVerve.API.CPIInflationNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — GET /v1/cpiinflation

No SDK to install — this is a plain HTTPS call to /v1/cpiinflation with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/cpiinflation");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/cpiinflationnpm APIVerve.API.CPIInflationNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — GET /v1/cpiinflation

No SDK to install — this is a plain HTTPS call to /v1/cpiinflation with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/cpiinflation")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/cpiinflationnpm APIVerve.API.CPIInflationNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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CPI Inflation API

Try it — live request, no key required

About the CPI Inflation API

What people use it for

Ways to call it

Other ways to use CPI Inflation

Questions.

Request parameters — GET /v1/cpiinflation

Optional

Authentication

Response — GET /v1/cpiinflation

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — GET /v1/cpiinflation

Resources

Also published for

Call it from Node.js — GET /v1/cpiinflation

Resources

Also published for

Call it from Python — GET /v1/cpiinflation

Resources

Also published for

Call it from C# / .NET — GET /v1/cpiinflation

Resources

Also published for

Call it from Go — GET /v1/cpiinflation

Resources

Also published for

Call it from PHP — GET /v1/cpiinflation

Resources

Also published for

Call it from Ruby — GET /v1/cpiinflation

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — CPI Inflation API

Finance

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