> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.coperniq.io/api-reference/accounts/create-account/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.coperniq.io/_mcp/server.

# Create Account

POST https://api.coperniq.io/v1/accounts
Content-Type: application/json

Create a new account with required and optional fields.

Required fields:
- `title`: Account name
- `address`: Account location

Optional fields:
- `accountType`: Account type (RESIDENTIAL/COMMERCIAL)
- `value`: Account value
- `size`: Account size
- `primaryEmail`/`primaryPhone`: Contact information
- `contacts`: Contact IDs only (no name, email, phone, etc.). **The contacts must be created first via POST /contacts.**
- `custom`: Custom fields object

Note: If primaryEmail or primaryPhone is provided and no contacts are provided, a contact will be automatically created or matched.

**Note:** The `/clients` path is an alias for `/accounts` and will continue to work until users are individually notified and migrated.


Reference: https://docs.coperniq.io/api-reference/accounts/create-account

## Authentication

- `x-api-key` header (required) — API Key authentication via header

## Request

### Query parameters

- `allow_new_options` (boolean, optional, default: false) — Whether to allow creation of new dropdown options during record creation
- `match_by` (enum, optional, default: title) — Field to use for matching existing records
  - Allowed values: `title`, `primaryEmail`, `primaryPhone`, `address`
- `match_found_strategy` (enum, optional, default: skip) — Strategy to use when a match is found
  - Allowed values: `skip`, `replace`, `enrich`

### Body (application/json)

This endpoint expects an AccountUpsert.

- `title` (string, required) — Account name
- `address` (list of string, required) — An array containing a single string, which represents the primary account location/address.
- `description` (string, optional, nullable) — Account description
- `accountType` (enum, optional) — Account type
  - Allowed values: `RESIDENTIAL`, `COMMERCIAL`
- `ownerId` (integer, optional, nullable) — ID of the owning user
- `primaryEmail` (string, optional) — Primary contact email
- `primaryPhone` (string, optional) — Primary contact phone
- `contacts` (list of integer, optional, nullable) — Contact IDs only (no name, email, phone, etc.). The contacts must be created first via POST /contacts. The first ID in the array is treated as the primary contact.
- `custom` (map from string to any, optional) — Custom fields

## Response

### 200

Matching account found

- `id` (integer, optional) — Unique identifier
- `createdAt` (string, optional) — Creation timestamp
- `updatedAt` (string, optional) — Timestamp of the most recent update to the record, including changes to its custom property values.
- `title` (string, optional) — Record title/name
- `description` (string, optional, nullable) — Record description
- `address` (list of string, optional) — Record location/address
- `isActive` (boolean, optional) — Whether the record is active
- `primaryEmail` (string, optional, nullable) — Primary contact email
- `primaryPhone` (string, optional, nullable) — Primary contact phone
- `number` (integer, optional) — Record number (e.g., 1234)
- `createdBy` (UserSummary, optional, nullable) — User who created the record. Null when the record was created by a non-user actor (e.g. automation or a contact).
- `updatedBy` (UserSummary, optional, nullable) — User who last edited a field on the record, derived from the changelog. Null when the record has never been edited or the last edit was made by a non-user actor.
- `custom` (map from string to any, optional) — Custom fields
- `accountType` (enum, optional, nullable) — Type of account (residential or commercial)
  - Allowed values: `RESIDENTIAL`, `COMMERCIAL`
- `contacts` (list of ContactRef, optional) — On GET requests, only populated when include_contacts=true is passed. Always populated on POST (create) and PATCH (update) responses. Ordered with the primary contact first, capped at 20 contacts.

### 201

Account created successfully

- `id` (integer, optional) — Unique identifier
- `createdAt` (string, optional) — Creation timestamp
- `updatedAt` (string, optional) — Timestamp of the most recent update to the record, including changes to its custom property values.
- `title` (string, optional) — Record title/name
- `description` (string, optional, nullable) — Record description
- `address` (list of string, optional) — Record location/address
- `isActive` (boolean, optional) — Whether the record is active
- `primaryEmail` (string, optional, nullable) — Primary contact email
- `primaryPhone` (string, optional, nullable) — Primary contact phone
- `number` (integer, optional) — Record number (e.g., 1234)
- `createdBy` (UserSummary, optional, nullable) — User who created the record. Null when the record was created by a non-user actor (e.g. automation or a contact).
- `updatedBy` (UserSummary, optional, nullable) — User who last edited a field on the record, derived from the changelog. Null when the record has never been edited or the last edit was made by a non-user actor.
- `custom` (map from string to any, optional) — Custom fields
- `accountType` (enum, optional, nullable) — Type of account (residential or commercial)
  - Allowed values: `RESIDENTIAL`, `COMMERCIAL`
- `contacts` (list of ContactRef, optional) — On GET requests, only populated when include_contacts=true is passed. Always populated on POST (create) and PATCH (update) responses. Ordered with the primary contact first, capped at 20 contacts.

## Errors

### 400 Bad Request Error

Invalid request

- `message` (string, optional)
- `code` (enum, optional)
  - Allowed values: `UNAUTHORIZED`
- `field` (string, optional) — Field that caused the validation error (if applicable)

### 401 Unauthorized Error

Authentication failed

- `message` (string, optional)
- `code` (enum, optional)
  - Allowed values: `UNAUTHORIZED`

## Types

### UserSummary

Minimal user representation used in responses

- `id` (integer, optional)
- `firstName` (string, optional, nullable)
- `lastName` (string, optional, nullable)
- `email` (string, optional, nullable)
- `avatarUrl` (string, optional, nullable)

### ContactRef

- `id` (integer, optional)
- `name` (string, optional)
- `title` (string, optional, nullable) — Contact title (e.g. job title)
- `description` (string, optional, nullable)
- `emails` (list of string, optional)
- `phones` (list of string, optional)
- `isPrimary` (boolean, optional) — True for the primary contact (the first contact in the list). At most one contact is primary.

## Examples

### Example 1

**Request**

```json
{
  "title": "string",
  "address": [
    "1600 Pennsylvania Ave NW, Washington, DC 20500"
  ]
}
```

**Response**

```json
{
  "id": 1,
  "createdAt": "2024-01-15T09:30:00Z",
  "updatedAt": "2024-01-15T09:30:00Z",
  "title": "string",
  "description": "string",
  "address": [
    "string"
  ],
  "isActive": true,
  "primaryEmail": "string",
  "primaryPhone": "string",
  "number": 1,
  "createdBy": {
    "id": 1,
    "firstName": "string",
    "lastName": "string",
    "email": "string",
    "avatarUrl": "string"
  },
  "updatedBy": {
    "id": 1,
    "firstName": "string",
    "lastName": "string",
    "email": "string",
    "avatarUrl": "string"
  },
  "custom": {},
  "accountType": "RESIDENTIAL",
  "contacts": [
    {
      "id": 1,
      "name": "string",
      "title": "string",
      "description": "string",
      "emails": [
        "string"
      ],
      "phones": [
        "string"
      ],
      "isPrimary": true
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.coperniq.io/v1/accounts"

payload = {
    "title": "string",
    "address": ["1600 Pennsylvania Ave NW, Washington, DC 20500"]
}
headers = {
    "x-api-key": "<apiKey>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.coperniq.io/v1/accounts';
const options = {
  method: 'POST',
  headers: {'x-api-key': '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"title":"string","address":["1600 Pennsylvania Ave NW, Washington, DC 20500"]}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://api.coperniq.io/v1/accounts"

	payload := strings.NewReader("{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}")

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

	req.Header.Add("x-api-key", "<apiKey>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.coperniq.io/v1/accounts")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}"

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

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.coperniq.io/v1/accounts")
  .header("x-api-key", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.coperniq.io/v1/accounts', [
  'body' => '{
  "title": "string",
  "address": [
    "1600 Pennsylvania Ave NW, Washington, DC 20500"
  ]
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'x-api-key' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.coperniq.io/v1/accounts");
var request = new RestRequest(Method.POST);
request.AddHeader("x-api-key", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "x-api-key": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = [
  "title": "string",
  "address": ["1600 Pennsylvania Ave NW, Washington, DC 20500"]
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.coperniq.io/v1/accounts")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```

### Example 2

**Request**

```json
{
  "title": "string",
  "address": [
    "1600 Pennsylvania Ave NW, Washington, DC 20500"
  ]
}
```

**Response**

```json
{
  "id": 1,
  "createdAt": "2024-01-15T09:30:00Z",
  "updatedAt": "2024-01-15T09:30:00Z",
  "title": "string",
  "description": "string",
  "address": [
    "string"
  ],
  "isActive": true,
  "primaryEmail": "string",
  "primaryPhone": "string",
  "number": 1,
  "createdBy": {
    "id": 1,
    "firstName": "string",
    "lastName": "string",
    "email": "string",
    "avatarUrl": "string"
  },
  "updatedBy": {
    "id": 1,
    "firstName": "string",
    "lastName": "string",
    "email": "string",
    "avatarUrl": "string"
  },
  "custom": {},
  "accountType": "RESIDENTIAL",
  "contacts": [
    {
      "id": 1,
      "name": "string",
      "title": "string",
      "description": "string",
      "emails": [
        "string"
      ],
      "phones": [
        "string"
      ],
      "isPrimary": true
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.coperniq.io/v1/accounts"

payload = {
    "title": "string",
    "address": ["1600 Pennsylvania Ave NW, Washington, DC 20500"]
}
headers = {
    "x-api-key": "<apiKey>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.coperniq.io/v1/accounts';
const options = {
  method: 'POST',
  headers: {'x-api-key': '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"title":"string","address":["1600 Pennsylvania Ave NW, Washington, DC 20500"]}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://api.coperniq.io/v1/accounts"

	payload := strings.NewReader("{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}")

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

	req.Header.Add("x-api-key", "<apiKey>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.coperniq.io/v1/accounts")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}"

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

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.coperniq.io/v1/accounts")
  .header("x-api-key", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.coperniq.io/v1/accounts', [
  'body' => '{
  "title": "string",
  "address": [
    "1600 Pennsylvania Ave NW, Washington, DC 20500"
  ]
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'x-api-key' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.coperniq.io/v1/accounts");
var request = new RestRequest(Method.POST);
request.AddHeader("x-api-key", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"title\": \"string\",\n  \"address\": [\n    \"1600 Pennsylvania Ave NW, Washington, DC 20500\"\n  ]\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "x-api-key": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = [
  "title": "string",
  "address": ["1600 Pennsylvania Ave NW, Washington, DC 20500"]
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.coperniq.io/v1/accounts")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```

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