Benchmark Rate API

GET

Keep financial models synced with official post-LIBOR benchmark rates.

Benchmark Rate retrieves current risk-free reference rates across major currencies, covering SOFR, SONIA, ESTR, TONA, and SARON. Pass a rate symbol to receive the latest percentage rate, effective date, currency, region, and daily change direction.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/benchmarkrate?rate=SOFR

Query parameters

ratestring

Verification

Format

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

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "rate": "SOFR",
    "name": "Secured Overnight Financing Rate",
    "currency": "USD",
    "region": "United States",
    "administrator": "Federal Reserve Bank of New York",
    "value": 3.62,
    "date": "2026-09-16",
    "lastUpdated": "2026-09-18T10:04:12.969Z",
    "change1d": -0.02,
    "changeDirection": "down",
    "previousValue": 3.64,
    "previousDate": "2026-09-15"
  }
}

About the Benchmark Rate API

Benchmark Rate provides the current values for the key risk-free reference rates used in global financial markets. These rates replaced LIBOR and are used for derivatives, loans, mortgages, and other financial contracts. Data is refreshed daily from FRED.

What people use it for

Floating Loan Servicing: Lending software recalculates monthly interest charges on adjustable corporate credit facilities by fetching the latest published SOFR or SONIA figures.
Interest Rate Swaps: To price floating-leg derivative contracts, quantitative analysts pull current SARON and ESTR levels to mark overnight indexed swaps to market.
Treasury Risk Monitoring: Treasury teams monitor rate shifts across dollar, pound, and euro credit lines by reading each day's movement direction.
Settlement Contract Auditing: Before settling cross-currency accounts, compliance engines verify applied borrowing rates against official published values for the matching transaction date.

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 Benchmark 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 Benchmark Rate API.

Read the docs →

Which benchmark rates does this cover?

It covers five major risk-free reference rates: SOFR for the United States, SONIA for the United Kingdom, ESTR for the European Union, TONA for Japan, and SARON for Switzerland. Each rate includes its currency, geographic region, current percentage value, and effective date.

Where does the benchmark rate data come from?

Data is sourced from FRED (Federal Reserve Economic Data) and refreshed daily. You receive official reference rate values alongside their reported publication dates.

Are daily rate changes and previous values included on the Free plan?

No, those require a paid plan. The one-day change, previous rate value, previous date, rate administrator, and last updated timestamp are premium fields unlocked on Starter and above. The Free plan returns the current rate value, date, currency, region, and change direction.

How many rate queries does the Free plan cover?

The Free plan covers 100 benchmark rate queries per month at 2 credits per call. If you need more frequent updates, the Starter plan covers up to 100,000 queries per month, which works out to about $0.30 per 1,000 calls.

Can I use these benchmark rates in a commercial financial platform?

Yes, commercial use is permitted on any paid plan. You can use the rate data inside your loan calculators, derivatives pricing software, or reporting systems. You cannot resell or redistribute the raw rate feed as a standalone data product.

Request parameters — GET /v1/benchmarkrate

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
`rate`Required	string	`SOFR`	The benchmark rate to retrieve `SOFRSONIAESTRTONASARON`

Example request

1
2

curl "https://api.apiverve.com/v1/benchmarkrate?rate=SOFR" \
  -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/benchmarkrate

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": {
    "rate": "SOFR",
    "name": "Secured Overnight Financing Rate",
    "currency": "USD",
    "region": "United States",
    "administrator": "Federal Reserve Bank of New York",
    "value": 4.32,
    "date": "2026-02-04",
    "lastUpdated": "2026-02-05T05:00:00.000Z",
    "change1d": -0.01,
    "changeDirection": "down",
    "previousValue": 4.33,
    "previousDate": "2026-02-03"
  }
}

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
`rate`	string	`"SOFR"`	Benchmark rate code (SOFR, SONIA, ESTR, TONA, SARON)
`name`	string	`"Secured Overnight Financing Rate"`	Full name of the benchmark rate
`currency`	string	`"USD"`	Currency denomination of the benchmark rate
`region`	string	`"United States"`	Geographic region where the rate applies
`administrator`Premium	string	`"Federal Reserve Bank of New York"`	Institution or entity administering the benchmark rate
`value`	number	`4.32`	Current benchmark rate percentage value
`date`	string	`"2026-02-04"`	Date of the benchmark rate value (YYYY-MM-DD format)
`lastUpdated`Premium	string	`"2026-02-05T05:00:00.000Z"`	Last update timestamp in ISO 8601 format
`change1d`Premium	number	`-0.01`	Rate change from previous day
`changeDirection`	string	`"down"`	Direction of daily change: up, down, or unchanged
`previousValue`Premium	number	`4.33`	Previous day's rate value
`previousDate`Premium	string	`"2026-02-03"`	Previous data date (YYYY-MM-DD format)

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	Benchmark 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/benchmarkrate

No SDK to install — this is a plain HTTPS call to /v1/benchmarkrate 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/benchmarkrate" \
  -H "x-api-key: YOUR_API_KEY"

Resources

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

Also published for

@apiverve/benchmarkratenpm apiverve-benchmarkratePyPI APIVerve.API.BenchmarkRateNuGet

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/benchmarkrate

Install the Node.js SDK, then call the Benchmark 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/benchmarkrate

Node.js

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

Resources

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

Also published for

apiverve-benchmarkratePyPI APIVerve.API.BenchmarkRateNuGet

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

Call it from Python — GET /v1/benchmarkrate

Install the Python SDK, then call the Benchmark 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-benchmarkrate

Python

import requests

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

Resources

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

Also published for

@apiverve/benchmarkratenpm APIVerve.API.BenchmarkRateNuGet

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/benchmarkrate

Install the C# / .NET SDK, then call the Benchmark 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.BenchmarkRate

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

Resources

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

Also published for

@apiverve/benchmarkratenpm apiverve-benchmarkratePyPI

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

Call it from Go — GET /v1/benchmarkrate

No SDK to install — this is a plain HTTPS call to /v1/benchmarkrate 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/benchmarkrate", 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/benchmarkratenpm apiverve-benchmarkratePyPI APIVerve.API.BenchmarkRateNuGet

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

Call it from PHP — GET /v1/benchmarkrate

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

PHP

$ch = curl_init("https://api.apiverve.com/v1/benchmarkrate");
curl_setopt($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/benchmarkratenpm apiverve-benchmarkratePyPI APIVerve.API.BenchmarkRateNuGet

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

Call it from Ruby — GET /v1/benchmarkrate

No SDK to install — this is a plain HTTPS call to /v1/benchmarkrate 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/benchmarkrate")
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/benchmarkratenpm apiverve-benchmarkratePyPI APIVerve.API.BenchmarkRateNuGet

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

Finance

View all 49 →

All articles →

Enrich Your CRM with Public Company DataAutomatically fill in company details for sales leads using SEC data. Ticker, industry, address, and more from a single API call.Read

Currency Conversion: Handling Exchange Rates CorrectlyExchange rates change constantly. Learn how to handle currency conversion in applications with accuracy and reliability.Read

Going Global: Building Multi-Currency AppsYour app works great in dollars. Now a customer in Germany wants to pay in euros. Here's what to know.Read

Benchmark Rate API

Try it — live request, no key required

About the Benchmark Rate API

What people use it for

Ways to call it

Other ways to use Benchmark Rate

Questions.

Request parameters — GET /v1/benchmarkrate

Required

Authentication

Response — GET /v1/benchmarkrate

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — GET /v1/benchmarkrate

Resources

Also published for

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

Resources

Also published for

Call it from Python — GET /v1/benchmarkrate

Resources

Also published for

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

Resources

Also published for

Call it from Go — GET /v1/benchmarkrate

Resources

Also published for

Call it from PHP — GET /v1/benchmarkrate

Resources

Also published for

Call it from Ruby — GET /v1/benchmarkrate

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Benchmark Rate API

Finance

Related articles

Ready to build with Benchmark Rate? Start with 200 free credits — one key unlocks all 300+ APIs.

Explore the catalog