curl --request PUT \
  --url https://api.attio.com/v2/workspace_blocklist_addresses \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "addresses": [
      {
        "address": "lists@acme.com",
        "enforcement_level": "blocked"
      },
      {
        "address": "https://www.newsletter.example.com",
        "enforcement_level": "blocked"
      },
      {
        "address": "jane@acme.com",
        "enforcement_level": "protected"
      }
    ]
  }
}
'

import requests

url = "https://api.attio.com/v2/workspace_blocklist_addresses"

payload = { "data": { "addresses": [
            {
                "address": "lists@acme.com",
                "enforcement_level": "blocked"
            },
            {
                "address": "https://www.newsletter.example.com",
                "enforcement_level": "blocked"
            },
            {
                "address": "jane@acme.com",
                "enforcement_level": "protected"
            }
        ] } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    data: {
      addresses: [
        {address: 'lists@acme.com', enforcement_level: 'blocked'},
        {address: 'https://www.newsletter.example.com', enforcement_level: 'blocked'},
        {address: 'jane@acme.com', enforcement_level: 'protected'}
      ]
    }
  })
};

fetch('https://api.attio.com/v2/workspace_blocklist_addresses', 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.attio.com/v2/workspace_blocklist_addresses",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'data' => [
        'addresses' => [
                [
                                'address' => 'lists@acme.com',
                                'enforcement_level' => 'blocked'
                ],
                [
                                'address' => 'https://www.newsletter.example.com',
                                'enforcement_level' => 'blocked'
                ],
                [
                                'address' => 'jane@acme.com',
                                'enforcement_level' => 'protected'
                ]
        ]
    ]
  ]),
  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.attio.com/v2/workspace_blocklist_addresses"

	payload := strings.NewReader("{\n  \"data\": {\n    \"addresses\": [\n      {\n        \"address\": \"lists@acme.com\",\n        \"enforcement_level\": \"blocked\"\n      },\n      {\n        \"address\": \"https://www.newsletter.example.com\",\n        \"enforcement_level\": \"blocked\"\n      },\n      {\n        \"address\": \"jane@acme.com\",\n        \"enforcement_level\": \"protected\"\n      }\n    ]\n  }\n}")

	req, _ := http.NewRequest("PUT", 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.put("https://api.attio.com/v2/workspace_blocklist_addresses")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"addresses\": [\n      {\n        \"address\": \"lists@acme.com\",\n        \"enforcement_level\": \"blocked\"\n      },\n      {\n        \"address\": \"https://www.newsletter.example.com\",\n        \"enforcement_level\": \"blocked\"\n      },\n      {\n        \"address\": \"jane@acme.com\",\n        \"enforcement_level\": \"protected\"\n      }\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.attio.com/v2/workspace_blocklist_addresses")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"addresses\": [\n      {\n        \"address\": \"lists@acme.com\",\n        \"enforcement_level\": \"blocked\"\n      },\n      {\n        \"address\": \"https://www.newsletter.example.com\",\n        \"enforcement_level\": \"blocked\"\n      },\n      {\n        \"address\": \"jane@acme.com\",\n        \"enforcement_level\": \"protected\"\n      }\n    ]\n  }\n}"

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

{
  "data": [
    {
      "address": "jane@acme.com",
      "address_type": "email_address",
      "enforcement_level": "blocked",
      "created_at": "2026-10-28T09:12:44.210000000Z"
    }
  ]
}

{
  "status_code": 400,
  "type": "invalid_request_error",
  "code": "validation_type",
  "message": "Body payload validation error."
}

{
  "status_code": 403,
  "type": "auth_error",
  "code": "unauthorized",
  "message": "A user-level access token can only manage the workspace blocklist if the member it acts for is a workspace admin."
}

{
  "status_code": 409,
  "type": "invalid_request_error",
  "code": "uniqueness_conflict",
  "message": "One or more addresses were changed by a concurrent request. Please retry."
}