curl --request POST \
  --url https://payments.sandbox.lerian.net/v1/boletos/installments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "firstDueDate": "2030-01-15",
  "installments": 2,
  "intervalDays": 30,
  "midazAccountId": "<string>",
  "payer": {
    "document": "<string>",
    "name": "<string>",
    "address": {
      "city": "<string>",
      "complement": "<string>",
      "neighborhood": "<string>",
      "number": "<string>",
      "state": "<string>",
      "street": "<string>",
      "zipCode": "<string>"
    }
  },
  "type": "TRADITIONAL",
  "guarantor": {
    "address": {
      "city": "<string>",
      "complement": "<string>",
      "neighborhood": "<string>",
      "number": "<string>",
      "state": "<string>",
      "street": "<string>",
      "zipCode": "<string>"
    },
    "document": "<string>",
    "name": "<string>"
  },
  "installmentAmounts": [
    "<string>"
  ],
  "totalAmount": "100.00"
}
'

package main

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

func main() {

	url := "https://payments.sandbox.lerian.net/v1/boletos/installments"

	payload := strings.NewReader("{\n  \"firstDueDate\": \"2030-01-15\",\n  \"installments\": 2,\n  \"intervalDays\": 30,\n  \"midazAccountId\": \"<string>\",\n  \"payer\": {\n    \"document\": \"<string>\",\n    \"name\": \"<string>\",\n    \"address\": {\n      \"city\": \"<string>\",\n      \"complement\": \"<string>\",\n      \"neighborhood\": \"<string>\",\n      \"number\": \"<string>\",\n      \"state\": \"<string>\",\n      \"street\": \"<string>\",\n      \"zipCode\": \"<string>\"\n    }\n  },\n  \"type\": \"TRADITIONAL\",\n  \"guarantor\": {\n    \"address\": {\n      \"city\": \"<string>\",\n      \"complement\": \"<string>\",\n      \"neighborhood\": \"<string>\",\n      \"number\": \"<string>\",\n      \"state\": \"<string>\",\n      \"street\": \"<string>\",\n      \"zipCode\": \"<string>\"\n    },\n    \"document\": \"<string>\",\n    \"name\": \"<string>\"\n  },\n  \"installmentAmounts\": [\n    \"<string>\"\n  ],\n  \"totalAmount\": \"100.00\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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))

}

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    firstDueDate: '2030-01-15',
    installments: 2,
    intervalDays: 30,
    midazAccountId: '<string>',
    payer: {
      document: '<string>',
      name: '<string>',
      address: {
        city: '<string>',
        complement: '<string>',
        neighborhood: '<string>',
        number: '<string>',
        state: '<string>',
        street: '<string>',
        zipCode: '<string>'
      }
    },
    type: 'TRADITIONAL',
    guarantor: {
      address: {
        city: '<string>',
        complement: '<string>',
        neighborhood: '<string>',
        number: '<string>',
        state: '<string>',
        street: '<string>',
        zipCode: '<string>'
      },
      document: '<string>',
      name: '<string>'
    },
    installmentAmounts: ['<string>'],
    totalAmount: '100.00'
  })
};

fetch('https://payments.sandbox.lerian.net/v1/boletos/installments', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://payments.sandbox.lerian.net/v1/boletos/installments"

payload = {
    "firstDueDate": "2030-01-15",
    "installments": 2,
    "intervalDays": 30,
    "midazAccountId": "<string>",
    "payer": {
        "document": "<string>",
        "name": "<string>",
        "address": {
            "city": "<string>",
            "complement": "<string>",
            "neighborhood": "<string>",
            "number": "<string>",
            "state": "<string>",
            "street": "<string>",
            "zipCode": "<string>"
        }
    },
    "type": "TRADITIONAL",
    "guarantor": {
        "address": {
            "city": "<string>",
            "complement": "<string>",
            "neighborhood": "<string>",
            "number": "<string>",
            "state": "<string>",
            "street": "<string>",
            "zipCode": "<string>"
        },
        "document": "<string>",
        "name": "<string>"
    },
    "installmentAmounts": ["<string>"],
    "totalAmount": "100.00"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "boletos": [
    {
      "amount": "<string>",
      "dueDate": "<string>",
      "id": "<string>",
      "installmentLabel": "<string>",
      "installmentNumber": 123,
      "status": "<string>"
    }
  ],
  "installmentsCount": 123,
  "seriesId": "<string>",
  "status": "<string>",
  "totalAmount": "<string>"
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

"<string>"

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}