curl --request POST \
  --url https://api.amplemarket.com/sequences/{id}/leads \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "leads": [
    {
      "email": "lead@target.example.com",
      "linkedin_url": "https://www.linkedin.com/in/example",
      "data": {
        "custom_nickname": "Joe",
        "company_name": "Target"
      },
      "routing": {
        "salesforce_account_id": "001XXXXXXXXXXXXXXX"
      },
      "overrides": {
        "ignore_recently_contacted": true,
        "ignore_exclusion_list": true,
        "ignore_duplicate_leads_in_other_draft_sequences": true,
        "ignore_duplicate_leads_in_other_active_sequences": true
      }
    }
  ],
  "settings": {
    "leads_distribution": "custom_mailboxes",
    "mailboxes": [
      "salesrep@first.example.com",
      "salesrep@second.example.com"
    ]
  }
}
'

import requests

url = "https://api.amplemarket.com/sequences/{id}/leads"

payload = {
    "leads": [
        {
            "email": "lead@target.example.com",
            "linkedin_url": "https://www.linkedin.com/in/example",
            "data": {
                "custom_nickname": "Joe",
                "company_name": "Target"
            },
            "routing": { "salesforce_account_id": "001XXXXXXXXXXXXXXX" },
            "overrides": {
                "ignore_recently_contacted": True,
                "ignore_exclusion_list": True,
                "ignore_duplicate_leads_in_other_draft_sequences": True,
                "ignore_duplicate_leads_in_other_active_sequences": True
            }
        }
    ],
    "settings": {
        "leads_distribution": "custom_mailboxes",
        "mailboxes": ["salesrep@first.example.com", "salesrep@second.example.com"]
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    leads: [
      {
        email: 'lead@target.example.com',
        linkedin_url: 'https://www.linkedin.com/in/example',
        data: {custom_nickname: 'Joe', company_name: 'Target'},
        routing: {salesforce_account_id: '001XXXXXXXXXXXXXXX'},
        overrides: {
          ignore_recently_contacted: true,
          ignore_exclusion_list: true,
          ignore_duplicate_leads_in_other_draft_sequences: true,
          ignore_duplicate_leads_in_other_active_sequences: true
        }
      }
    ],
    settings: {
      leads_distribution: 'custom_mailboxes',
      mailboxes: ['salesrep@first.example.com', 'salesrep@second.example.com']
    }
  })
};

fetch('https://api.amplemarket.com/sequences/{id}/leads', 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.amplemarket.com/sequences/{id}/leads",
  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([
    'leads' => [
        [
                'email' => 'lead@target.example.com',
                'linkedin_url' => 'https://www.linkedin.com/in/example',
                'data' => [
                                'custom_nickname' => 'Joe',
                                'company_name' => 'Target'
                ],
                'routing' => [
                                'salesforce_account_id' => '001XXXXXXXXXXXXXXX'
                ],
                'overrides' => [
                                'ignore_recently_contacted' => true,
                                'ignore_exclusion_list' => true,
                                'ignore_duplicate_leads_in_other_draft_sequences' => true,
                                'ignore_duplicate_leads_in_other_active_sequences' => true
                ]
        ]
    ],
    'settings' => [
        'leads_distribution' => 'custom_mailboxes',
        'mailboxes' => [
                'salesrep@first.example.com',
                'salesrep@second.example.com'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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.amplemarket.com/sequences/{id}/leads"

	payload := strings.NewReader("{\n  \"leads\": [\n    {\n      \"email\": \"lead@target.example.com\",\n      \"linkedin_url\": \"https://www.linkedin.com/in/example\",\n      \"data\": {\n        \"custom_nickname\": \"Joe\",\n        \"company_name\": \"Target\"\n      },\n      \"routing\": {\n        \"salesforce_account_id\": \"001XXXXXXXXXXXXXXX\"\n      },\n      \"overrides\": {\n        \"ignore_recently_contacted\": true,\n        \"ignore_exclusion_list\": true,\n        \"ignore_duplicate_leads_in_other_draft_sequences\": true,\n        \"ignore_duplicate_leads_in_other_active_sequences\": true\n      }\n    }\n  ],\n  \"settings\": {\n    \"leads_distribution\": \"custom_mailboxes\",\n    \"mailboxes\": [\n      \"salesrep@first.example.com\",\n      \"salesrep@second.example.com\"\n    ]\n  }\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))

}

HttpResponse<String> response = Unirest.post("https://api.amplemarket.com/sequences/{id}/leads")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"leads\": [\n    {\n      \"email\": \"lead@target.example.com\",\n      \"linkedin_url\": \"https://www.linkedin.com/in/example\",\n      \"data\": {\n        \"custom_nickname\": \"Joe\",\n        \"company_name\": \"Target\"\n      },\n      \"routing\": {\n        \"salesforce_account_id\": \"001XXXXXXXXXXXXXXX\"\n      },\n      \"overrides\": {\n        \"ignore_recently_contacted\": true,\n        \"ignore_exclusion_list\": true,\n        \"ignore_duplicate_leads_in_other_draft_sequences\": true,\n        \"ignore_duplicate_leads_in_other_active_sequences\": true\n      }\n    }\n  ],\n  \"settings\": {\n    \"leads_distribution\": \"custom_mailboxes\",\n    \"mailboxes\": [\n      \"salesrep@first.example.com\",\n      \"salesrep@second.example.com\"\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.amplemarket.com/sequences/{id}/leads")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"leads\": [\n    {\n      \"email\": \"lead@target.example.com\",\n      \"linkedin_url\": \"https://www.linkedin.com/in/example\",\n      \"data\": {\n        \"custom_nickname\": \"Joe\",\n        \"company_name\": \"Target\"\n      },\n      \"routing\": {\n        \"salesforce_account_id\": \"001XXXXXXXXXXXXXXX\"\n      },\n      \"overrides\": {\n        \"ignore_recently_contacted\": true,\n        \"ignore_exclusion_list\": true,\n        \"ignore_duplicate_leads_in_other_draft_sequences\": true,\n        \"ignore_duplicate_leads_in_other_active_sequences\": true\n      }\n    }\n  ],\n  \"settings\": {\n    \"leads_distribution\": \"custom_mailboxes\",\n    \"mailboxes\": [\n      \"salesrep@first.example.com\",\n      \"salesrep@second.example.com\"\n    ]\n  }\n}"

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

{
  "total": 1,
  "total_added_to_sequence": 1,
  "duplicate_emails": [],
  "duplicate_linkedin_urls": [],
  "in_exclusion_list_and_skipped": [],
  "recently_contacted_and_skipped": [],
  "already_in_sequence_and_skipped": [],
  "in_other_draft_sequences_and_skipped": [],
  "in_other_active_sequences_and_skipped": []
}

{
  "_errors": [
    {
      "code": "missing_field",
      "title": "Missing Field",
      "detail": "Missing field from request: leads",
      "source": {
        "pointer": "/leads"
      }
    }
  ],
  "object": "error"
}

{
  "validation_errors": [
    {
      "error_code": "missing_lead_field",
      "message": "Missing lead dynamic field 'it' on leads with indexes [1]"
    }
  ]
}