Interest Rate API GET

Interest Rate is a tool for retrieving current and historical central bank policy interest rates for major economies worldwide. It returns the latest rate along with the central bank name and effective date.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/interestrate

Verification

Format

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

200 OK

{
  "status": "ok",
  "error": null,
  "data": {
    // Interest Rate response payload
  }
}

About the Interest Rate API

Interest Rate works by aggregating central bank policy rate data from FRED (Federal Reserve Economic Data) for 22 major central banks including the Federal Reserve, European Central Bank, Bank of England, and more. Data is refreshed daily with historical data available back to 2000.

What people use it for

Financial Analysis: Use the Interest Rate API to track central bank policy rates for economic analysis and forecasting
Currency Trading: Monitor interest rate differentials between countries for forex trading strategies
Investment Research: Incorporate central bank rate data into investment research and fixed income analysis
Economic Dashboards: Build dashboards showing global monetary policy rates across major economies

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 Interest Rate

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 Interest Rate API.

Read the docs →

What does the Interest Rate API do?

How do I authenticate Interest Rate API requests?

Pass your API key in the x-api-key header over HTTPS. One key works across all 300+ APIVerve APIs — there are no per-endpoint credentials.

How much does the Interest Rate API cost?

Each call spends 2 credits from your shared pool. The free tier includes 200 credits every month, and paid plans add more headroom.

How fast is the Interest Rate API?

Response time depends on the endpoint — the p50 through p99 latency for this API is published on this page. Requests are served over HTTPS through a global edge network.

What response formats does the Interest Rate API support?

JSON by default, plus XML and YAML via the format parameter. GraphQL and an MCP interface for AI agents are available across the catalog.

What HTTP method does the Interest Rate API use?

GET over HTTPS, following standard REST conventions with a consistent { status, error, data } response envelope.

Request parameters — GET /v1/interestrate

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.

Required

Parameter	Type	Example	Description
`country`Required	string	`US`	2-letter country code `AUBRCACHCNCZDKEU`+14 length 2-2

Optional

Parameter	Type	Example	Description
`date`OptionalPremium	string	`2024-06`	Optional month in YYYY-MM format for a historical lookup. Omit for the current rate.

Example request

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2

curl "https://api.apiverve.com/v1/interestrate?country=US&date=2024-06" \
  -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/interestrate

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": {
    "country": "US",
    "countryName": "United States",
    "centralBank": "Federal Reserve",
    "rate": 4.5,
    "date": "2026-02-05",
    "lastUpdated": "2026-02-05T05:00:00.000Z",
    "lastChanged": "2026-01-29",
    "change": -0.25,
    "changeDirection": "down",
    "previousRate": 4.75
  }
}

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
`country`	string	`"US"`	Two-letter ISO country code for the nation
`countryName`	string	`"United States"`	Full name of the country in English
`centralBank`	string	`"Federal Reserve"`	Name of the central bank managing monetary policy
`rate`	number	`4.5`	Central bank policy interest rate percentage for the requested period (current if no date)
`date`	string	`"2026-02-05"`	Date when the rate data was recorded
`lastUpdated`	string	`"2026-02-05T05:00:00.000Z"`	ISO timestamp of the last data refresh update (current lookups only)
`lastChanged`Premium	string	`"2026-01-29"`	Date when the rate was last changed (current lookups only)
`change`Premium	number	`-0.25`	Size of the last rate change in percentage points (current lookups only)
`changeDirection`	string	`"down"`	Direction of last change: up, down, or unchanged (current lookups only)
`previousRate`Premium	number	`4.75`	Rate before the last change (current 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	Interest Rate 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/interestrate

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

cURL

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2

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

Resources

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

Also published for

@apiverve/interestratenpm apiverve-interestratePyPI APIVerve.API.InterestRateNuGet

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/interestrate

Install the Node.js SDK, then call the Interest Rate 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/interestrate

Node.js

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

Resources

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

Also published for

apiverve-interestratePyPI APIVerve.API.InterestRateNuGet

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

Call it from Python — GET /v1/interestrate

Install the Python SDK, then call the Interest Rate API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — PyPI

pip install apiverve-interestrate

Python

import requests

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

Resources

PyPIapiverve-interestrateThe published Python client, versioned and signed.GitHubapiverve/interestrate-apiSource, issues and the examples this page is built from.ReferenceInterest Rate API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/interestratenpm APIVerve.API.InterestRateNuGet

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/interestrate

Install the C# / .NET SDK, then call the Interest Rate 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.InterestRate

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/interestrate");
Console.WriteLine(json);

Resources

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

Also published for

@apiverve/interestratenpm apiverve-interestratePyPI

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

Call it from Go — GET /v1/interestrate

No SDK to install — this is a plain HTTPS call to /v1/interestrate 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/interestrate", 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/interestratenpm apiverve-interestratePyPI APIVerve.API.InterestRateNuGet

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

Call it from PHP — GET /v1/interestrate

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

PHP

$ch = curl_init("https://api.apiverve.com/v1/interestrate");
curl_setopt($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/interestratenpm apiverve-interestratePyPI APIVerve.API.InterestRateNuGet

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

Call it from Ruby — GET /v1/interestrate

No SDK to install — this is a plain HTTPS call to /v1/interestrate 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/interestrate")
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/interestratenpm apiverve-interestratePyPI APIVerve.API.InterestRateNuGet

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

Finance

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Interest Rate API GET

Try it — live request, no key required

About the Interest Rate API

What people use it for

Ways to call it

Other ways to use Interest Rate

Questions.

Request parameters — GET /v1/interestrate

Required

Optional

Authentication

Response — GET /v1/interestrate

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — GET /v1/interestrate

Resources

Also published for

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

Resources

Also published for

Call it from Python — GET /v1/interestrate

Resources

Also published for

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

Resources

Also published for

Call it from Go — GET /v1/interestrate

Resources

Also published for

Call it from PHP — GET /v1/interestrate

Resources

Also published for

Call it from Ruby — GET /v1/interestrate

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Interest Rate API

Finance

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