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

# Create Opportunity Work Order

POST https://api.coperniq.io/v1/opportunities/{opportunity_id}/work-orders
Content-Type: application/json

Create a new work order for an opportunity.

Notes:
- `templateId` is required.
- `phaseInstanceId` is optional. The phase does not need to be started to create an opportunity work order.

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


Reference: https://docs.coperniq.io/api-reference/work-orders/create-opportunity-work-order

## Authentication

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

## Request

### Path parameters

- `opportunity_id` (integer, required) — Opportunity identifier

### Body (application/json)

This endpoint expects an object.

- `templateId` (integer, required) — The ID of the work order template to use
- `phaseInstanceId` (integer, optional) — Optional. The ID of the phase instance to use. If provided, the phase does not need to be started to create an opportunity work order. You can gather phase instance ids from the get opportunity endpoint.

## Response

### 201

Work order created successfully

- `id` (integer, optional) — Created workflow element (task) identifier
- `createdAt` (string, optional)
- `updatedAt` (string, optional)
- `description` (string, optional, nullable)
- `position` (integer, optional) — Position within phase
- `phaseInstanceId` (integer, optional)
- `projectId` (integer, optional)
- `createdById` (integer, optional)

## Errors

### 400 Bad Request Error

Invalid request

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

### 401 Unauthorized Error

Authentication failed

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

### 404 Not Found Error

Resource not found

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

## Examples

**Request**

```json
{
  "templateId": 1
}
```

**Response**

```json
{
  "id": 1,
  "createdAt": "2024-01-15T09:30:00Z",
  "updatedAt": "2024-01-15T09:30:00Z",
  "description": "string",
  "position": 1,
  "phaseInstanceId": 1,
  "projectId": 1,
  "createdById": 1
}
```

**SDK Code**

```python
import requests

url = "https://api.coperniq.io/v1/opportunities/1/work-orders"

payload = { "templateId": 1 }
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/opportunities/1/work-orders';
const options = {
  method: 'POST',
  headers: {'x-api-key': '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"templateId":1}'
};

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/opportunities/1/work-orders"

	payload := strings.NewReader("{\n  \"templateId\": 1\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/opportunities/1/work-orders")

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  \"templateId\": 1\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/opportunities/1/work-orders")
  .header("x-api-key", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"templateId\": 1\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.coperniq.io/v1/opportunities/1/work-orders', [
  'body' => '{
  "templateId": 1
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'x-api-key' => '<apiKey>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.coperniq.io/v1/opportunities/1/work-orders");
var request = new RestRequest(Method.POST);
request.AddHeader("x-api-key", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"templateId\": 1\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "x-api-key": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = ["templateId": 1] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.coperniq.io/v1/opportunities/1/work-orders")! 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()
```

> Official Coperniq API documentation. Build integrations for solar and construction project management — projects, opportunities, work orders, invoices, webhooks, and more.