Treasury Yields API

Overview

To use Treasury Yields, you need an API key. You can get one by creating a free account and visiting your dashboard.

GET Endpoint

https://api.apiverve.com/v1/treasuryyields

Example

How to call the Treasury Yields API in different programming languages.

curl -X GET \
  "https://api.apiverve.com/v1/treasuryyields?date=2025-06&type=10yr" \
  -H "X-API-Key: your_api_key_here"

const response = await fetch('https://api.apiverve.com/v1/treasuryyields?date=2025-06&type=10yr', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);

import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

response = requests.get('https://api.apiverve.com/v1/treasuryyields?date=2025-06&type=10yr', headers=headers)

data = response.json()
print(data)

package main

import (
    "fmt"
    "io"
    "net/http"

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/treasuryyields?date=2025-06&type=10yr", nil)

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

{
  "status": "ok",
  "error": null,
  "data": {
    "date": "2024-02-01",
    "bills": 5.24,
    "notes": 4.35,
    "bonds": 4.67,
    "tips": 2.15,
    "frn": 5.31,
    "changes": {
      "bills": {
        "change1d": 0.02,
        "direction": "up"
      },
      "notes": {
        "change1d": -0.03,
        "direction": "down"
      },
      "bonds": {
        "change1d": 0.01,
        "direction": "up"
      },
      "tips": {
        "change1d": 0,
        "direction": "unchanged"
      },
      "frn": {
        "change1d": 0.02,
        "direction": "up"
      }
    },
    "previousDate": "2024-01-31"
  }
}

Authentication

The Treasury Yields API requires authentication via API key. Include your API key in the request header:

X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the Treasury Yields API directly in your browser with live requests and responses.

Parameters

The following parameters are available for the Treasury Yields API:

Response

The Treasury Yields API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.

Other Response Formats

<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <date>2024-02-01</date>
    <bills>5.24</bills>
    <notes>4.35</notes>
    <bonds>4.67</bonds>
    <tips>2.15</tips>
    <frn>5.31</frn>
    <changes>
      <bills>
        <change1d>0.02</change1d>
        <direction>up</direction>
      </bills>
      <notes>
        <change1d>-0.03</change1d>
        <direction>down</direction>
      </notes>
      <bonds>
        <change1d>0.01</change1d>
        <direction>up</direction>
      </bonds>
      <tips>
        <change1d>0</change1d>
        <direction>unchanged</direction>
      </tips>
      <frn>
        <change1d>0.02</change1d>
        <direction>up</direction>
      </frn>
    </changes>
    <previousDate>2024-01-31</previousDate>
  </data>
</response>

status: ok
error: null
data:
  date: '2024-02-01'
  bills: 5.24
  notes: 4.35
  bonds: 4.67
  tips: 2.15
  frn: 5.31
  changes:
    bills:
      change1d: 0.02
      direction: up
    notes:
      change1d: -0.03
      direction: down
    bonds:
      change1d: 0.01
      direction: up
    tips:
      change1d: 0
      direction: unchanged
    frn:
      change1d: 0.02
      direction: up
  previousDate: '2024-01-31'

Response Structure

All API responses follow a consistent structure with the following fields:

Learn more about response formats →

Response Data Fields

When the request is successful, the data object contains the following fields:

Headers

Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →

GraphQL AccessALPHA

Access Treasury Yields through GraphQL to combine it with other API calls in a single request. Query only the treasury yields data you need with precise field selection, and orchestrate complex data fetching workflows.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

POST https://api.apiverve.com/v1/graphql

query {
  treasuryyields(
    input: {
      date: "2025-06"
      type: "10yr"
    }
  ) {
    date
    bills
    notes
    bonds
    tips
    frn
    changes {
      bills {
        change1d
        direction
      }
      notes {
        change1d
        direction
      }
      bonds {
        change1d
        direction
      }
      tips {
        change1d
        direction
      }
      frn {
        change1d
        direction
      }
    }
    previousDate
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

CORS Support

The Treasury Yields API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →

Rate Limiting

Treasury Yields requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →

Error Codes

The Treasury Yields API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →

SDKs for Treasury Yields

Official Treasury Yields packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →

JitPack

No-Code Integrations

Treasury Yields works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →

Zapier

Make

Pipedream

n8n

Power Automate

Frequently Asked Questions

People who used this also used...

Based on your interest in Treasury Yields, you might also like these APIs:

VAT Rates

VAT Rates provides current and historical Value Added Tax rates for EU and non-EU countries. Includes standard, reduced, and special rates with support for regional exceptions.

1 credit per call

Unemployment Rate

Unemployment Rate is a tool for retrieving unemployment statistics by country. It returns the unemployment rate as a percentage of the total labor force, with data available for over 200 countries from 1991 to present.

1 credit per call

Trade Balance

Trade Balance provides monthly US international trade data - exports, imports, and the resulting goods-and-services trade balance (deficit or surplus) on a Balance of Payments basis.

1 credit per call