curl --request POST \
  --url https://api.fincept.in/quantlib/solver/bootstrap/curve \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "reference_date": "2024-01-15",
  "instruments": [
    {
      "instrument_type": "deposit",
      "tenor": 0.25,
      "rate": 0.025
    },
    {
      "instrument_type": "swap",
      "tenor": 2,
      "rate": 0.035
    },
    {
      "instrument_type": "swap",
      "tenor": 5,
      "rate": 0.045
    }
  ],
  "interpolation": "log_linear"
}
'

import requests

url = "https://api.fincept.in/quantlib/solver/bootstrap/curve"

payload = {
    "reference_date": "2024-01-15",
    "instruments": [
        {
            "instrument_type": "deposit",
            "tenor": 0.25,
            "rate": 0.025
        },
        {
            "instrument_type": "swap",
            "tenor": 2,
            "rate": 0.035
        },
        {
            "instrument_type": "swap",
            "tenor": 5,
            "rate": 0.045
        }
    ],
    "interpolation": "log_linear"
}
headers = {
    "X-API-Key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    reference_date: '2024-01-15',
    instruments: [
      {instrument_type: 'deposit', tenor: 0.25, rate: 0.025},
      {instrument_type: 'swap', tenor: 2, rate: 0.035},
      {instrument_type: 'swap', tenor: 5, rate: 0.045}
    ],
    interpolation: 'log_linear'
  })
};

fetch('https://api.fincept.in/quantlib/solver/bootstrap/curve', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fincept.in/quantlib/solver/bootstrap/curve",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'reference_date' => '2024-01-15',
    'instruments' => [
        [
                'instrument_type' => 'deposit',
                'tenor' => 0.25,
                'rate' => 0.025
        ],
        [
                'instrument_type' => 'swap',
                'tenor' => 2,
                'rate' => 0.035
        ],
        [
                'instrument_type' => 'swap',
                'tenor' => 5,
                'rate' => 0.045
        ]
    ],
    'interpolation' => 'log_linear'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.fincept.in/quantlib/solver/bootstrap/curve"

	payload := strings.NewReader("{\n  \"reference_date\": \"2024-01-15\",\n  \"instruments\": [\n    {\n      \"instrument_type\": \"deposit\",\n      \"tenor\": 0.25,\n      \"rate\": 0.025\n    },\n    {\n      \"instrument_type\": \"swap\",\n      \"tenor\": 2,\n      \"rate\": 0.035\n    },\n    {\n      \"instrument_type\": \"swap\",\n      \"tenor\": 5,\n      \"rate\": 0.045\n    }\n  ],\n  \"interpolation\": \"log_linear\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-API-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.fincept.in/quantlib/solver/bootstrap/curve")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reference_date\": \"2024-01-15\",\n  \"instruments\": [\n    {\n      \"instrument_type\": \"deposit\",\n      \"tenor\": 0.25,\n      \"rate\": 0.025\n    },\n    {\n      \"instrument_type\": \"swap\",\n      \"tenor\": 2,\n      \"rate\": 0.035\n    },\n    {\n      \"instrument_type\": \"swap\",\n      \"tenor\": 5,\n      \"rate\": 0.045\n    }\n  ],\n  \"interpolation\": \"log_linear\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fincept.in/quantlib/solver/bootstrap/curve")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reference_date\": \"2024-01-15\",\n  \"instruments\": [\n    {\n      \"instrument_type\": \"deposit\",\n      \"tenor\": 0.25,\n      \"rate\": 0.025\n    },\n    {\n      \"instrument_type\": \"swap\",\n      \"tenor\": 2,\n      \"rate\": 0.035\n    },\n    {\n      \"instrument_type\": \"swap\",\n      \"tenor\": 5,\n      \"rate\": 0.045\n    }\n  ],\n  \"interpolation\": \"log_linear\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "reference_date": "2024-01-15",
    "interpolation": "log_linear",
    "instruments_count": 3,
    "pillars": [
      {
        "time": 0.25,
        "discount_factor": 0.9938
      },
      {
        "time": 2,
        "discount_factor": 0.9323
      },
      {
        "time": 5,
        "discount_factor": 0.7985
      }
    ]
  }
}

{
  "detail": "Invalid API key"
}

{
  "detail": "Endpoint requires Basic tier or higher"
}

{
  "detail": [
    {}
  ]
}