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# Roll Contract

POST https://demo.tradovateapi.com/v1/contract/rollcontract
Content-Type: application/json

### Resolve the next or previous contract in a product's maturity sequence.

**Available to:** All authenticated users

**Environments:** Demo, Live

**[Rate Limit](/api/authentication#request-rate-limits-and-time-penalties):** 1,000 requests per hour, 1-second back-off, counts all requests

Given a contract `name`, return the adjacent contract in the same product's maturity sequence. Set `forward` to `true` to roll to the next (later) maturity or `false` to roll to the previous (earlier) maturity. This resolves the rolled contract definition only — it does not move positions or place orders.

The optional `ifExpired` flag controls when the roll is applied: when `true`, the adjacent contract is returned only if the named contract has expired; when omitted or `false`, the adjacent contract is returned unconditionally.

On success, the response `contract` field contains the resolved `Contract` (its `id`, `name`, and `contractMaturityId`). If the request fails, `contract` is absent and `errorText` describes the reason. To roll several contracts in a single call, use `rollContracts`.

**Common Failure Scenarios**

- No contract matches the supplied `name`.
- There is no adjacent maturity in the requested direction (for example, rolling forward past the last listed maturity).

**Error Messages**

| `errorText` | Trigger |
|-------------|---------|
| Non-empty `errorText` | The request failed; the field describes the reason. |

Reference: https://docs.ninjatrader.com/api/rest-api-endpoints/contract-library/roll-contract

## OpenAPI Specification

```yaml
openapi: 3.1.0
info:
  title: public
  version: 1.0.0
paths:
  /contract/rollcontract:
    post:
      operationId: rollContract
      summary: Roll Contract
      description: >-
        ### Resolve the next or previous contract in a product's maturity
        sequence.


        **Available to:** All authenticated users


        **Environments:** Demo, Live


        **[Rate
        Limit](/api/authentication#request-rate-limits-and-time-penalties):**
        1,000 requests per hour, 1-second back-off, counts all requests


        Given a contract `name`, return the adjacent contract in the same
        product's maturity sequence. Set `forward` to `true` to roll to the next
        (later) maturity or `false` to roll to the previous (earlier) maturity.
        This resolves the rolled contract definition only — it does not move
        positions or place orders.


        The optional `ifExpired` flag controls when the roll is applied: when
        `true`, the adjacent contract is returned only if the named contract has
        expired; when omitted or `false`, the adjacent contract is returned
        unconditionally.


        On success, the response `contract` field contains the resolved
        `Contract` (its `id`, `name`, and `contractMaturityId`). If the request
        fails, `contract` is absent and `errorText` describes the reason. To
        roll several contracts in a single call, use `rollContracts`.


        **Common Failure Scenarios**


        - No contract matches the supplied `name`.

        - There is no adjacent maturity in the requested direction (for example,
        rolling forward past the last listed maturity).


        **Error Messages**


        | `errorText` | Trigger |

        |-------------|---------|

        | Non-empty `errorText` | The request failed; the field describes the
        reason. |
      tags:
        - contractLibrary
      parameters:
        - name: Authorization
          in: header
          description: Bearer authentication
          required: true
          schema:
            type: string
      responses:
        '200':
          description: RollContractResponse
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RollContractResponse'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RollContract'
servers:
  - url: https://demo.tradovateapi.com/v1
    description: Demo
  - url: https://live.tradovateapi.com/v1
    description: Live
components:
  schemas:
    RollContract:
      type: object
      properties:
        name:
          type: string
        forward:
          type: boolean
        ifExpired:
          type: boolean
      required:
        - name
        - forward
      title: RollContract
    Contract:
      type: object
      properties:
        id:
          type: integer
          format: int64
        name:
          type: string
        contractMaturityId:
          type: integer
          format: int64
        timestamp:
          type: string
          format: date-time
      required:
        - name
        - contractMaturityId
        - timestamp
      title: Contract
    RollContractResponse:
      type: object
      properties:
        errorText:
          type: string
          description: Non-empty if the request failed
        contract:
          $ref: '#/components/schemas/Contract'
      title: RollContractResponse
  securitySchemes:
    bearer_access_token:
      type: http
      scheme: bearer

```

## Examples



**Request**

```json
{
  "name": "string",
  "forward": true
}
```

**Response**

```json
{
  "errorText": "string",
  "contract": {
    "name": "string",
    "contractMaturityId": 1,
    "timestamp": "2024-01-15T09:30:00Z",
    "id": 1
  }
}
```

**SDK Code**

```python
import requests

url = "https://demo.tradovateapi.com/v1/contract/rollcontract"

payload = {
    "name": "string",
    "forward": True
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://demo.tradovateapi.com/v1/contract/rollcontract';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"name":"string","forward":true}'
};

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://demo.tradovateapi.com/v1/contract/rollcontract"

	payload := strings.NewReader("{\n  \"name\": \"string\",\n  \"forward\": true\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(res)
	fmt.Println(string(body))

}
```

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

url = URI("https://demo.tradovateapi.com/v1/contract/rollcontract")

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  \"name\": \"string\",\n  \"forward\": true\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://demo.tradovateapi.com/v1/contract/rollcontract")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"string\",\n  \"forward\": true\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://demo.tradovateapi.com/v1/contract/rollcontract', [
  'body' => '{
  "name": "string",
  "forward": true
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://demo.tradovateapi.com/v1/contract/rollcontract");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"name\": \"string\",\n  \"forward\": true\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [
  "name": "string",
  "forward": true
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://demo.tradovateapi.com/v1/contract/rollcontract")! 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()
```