Extend Loan

Extend the maturity dates of an existing loan’s installments on Lendermarket side.

Loans can be only extended if at the point of createLoans the extensions have been allowed. Trying to extend loan that cant be extended will give 422 Error - Maximum number allowed extensions reached,

curl -X POST "https://api.lendermarket.com/claims/v1/lender/createLoanExtension" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -d '{
  "loanUuid": "dcb87579-8d5e-412a-9f71-7c46c72ed589",
  "daysToExtend": 30
}'

import requests
import json

url = "https://api.lendermarket.com/claims/v1/lender/createLoanExtension"
headers = {
  "Content-Type": "application/json",
  "Authorization": "Bearer YOUR_API_TOKEN"
}
data = {
  "loanUuid": "dcb87579-8d5e-412a-9f71-7c46c72ed589",
  "daysToExtend": 30
}

response = requests.post(url, headers=headers, json=data)
print(response.json())

const response = await fetch("https://api.lendermarket.com/claims/v1/lender/createLoanExtension", {
  method: "POST",
  headers: {
  "Content-Type": "application/json",
  "Authorization": "Bearer YOUR_API_TOKEN"
},
  body: JSON.stringify({
  "loanUuid": "dcb87579-8d5e-412a-9f71-7c46c72ed589",
  "daysToExtend": 30
})
});

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

package main

import (
    "fmt"
    "net/http"
    "bytes"
    "encoding/json"
)

func main() {
    data := []byte(`{
  "loanUuid": "dcb87579-8d5e-412a-9f71-7c46c72ed589",
  "daysToExtend": 30
}`)

    req, err := http.NewRequest("POST", "https://api.lendermarket.com/claims/v1/lender/createLoanExtension", bytes.NewBuffer(data))
    if err != nil {
        panic(err)
    }

    req.Header.Set("Content-Type", "application/json")
    req.Header.Set("Authorization", "Bearer YOUR_API_TOKEN")

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

    fmt.Println("Response Status:", resp.Status)
}

require 'net/http'
require 'json'

uri = URI('https://api.lendermarket.com/claims/v1/lender/createLoanExtension')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request['Authorization'] = 'Bearer YOUR_API_TOKEN'
request.body = '{
  "loanUuid": "dcb87579-8d5e-412a-9f71-7c46c72ed589",
  "daysToExtend": 30
}'

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

{
  "data": {
    "uuid": "a49c2469-0537-48a1-aa0e-82ab32a157ac",
    "loanUuid": "dcb87579-8d5e-412a-9f71-7c46c72ed589",
    "extendedDays": 30,
    "paymentDate": "2026-01-28",
    "paymentSchedule": [
      {
        "dueDate": "2027-01-26",
        "accruedInterestAmount": "0.00",
        "totalPrincipalAmount": "0.00",
        "totalInterestAmount": "0.00",
        "totalDelayedInterestAmount": "0.00",
        "outstandingPrincipalAmount": "0.00",
        "outstandingInterestAmount": "0.00",
        "outstandingDelayedInterestAmount": "0.00",
        "paidPrincipalAmount": "0.00",
        "paidInterestAmount": "0.00",
        "paidDelayedInterestAmount": "0.00"
      },
      {
        "dueDate": "2027-02-25",
        "accruedInterestAmount": "0.00",
        "totalPrincipalAmount": "1000.00",
        "totalInterestAmount": "152.83",
        "totalDelayedInterestAmount": "0.00",
        "outstandingPrincipalAmount": "1000.00",
        "outstandingInterestAmount": "152.83",
        "outstandingDelayedInterestAmount": "0.00",
        "paidPrincipalAmount": "0.00",
        "paidInterestAmount": "0.00",
        "paidDelayedInterestAmount": "0.00"
      }
    ]
  }
}

{
  "message": "The loan uuid field is required. (and 1 more error)",
  "errors": {
    "loanUuid": [
      "The loan uuid field is required."
    ],
    "daysToExtend": [
      "The days to extend field is required."
    ]
  }
}