# Create environment variable


```
POST 
https://api.apify.com/v2/acts/:actorId/versions/:versionNumber/env-vars
```


Creates an environment variable of an Actor using values specified in a  passed as JSON in the POST payload.

The request must specify `name` and `value` parameters (as strings) in the JSON payload and a `Content-Type: application/json` HTTP header.


```
{
    "name": "ENV_VAR_NAME",
    "value": "my-env-var"
}
```


The response is the  as returned by the  endpoint.

## Request

### Path Parameters

* **actorId** string required

  Actor ID or a tilde-separated owner's username and Actor name.

  **Example:** `janedoe~my-actor`

  **versionNumber** string required

  Actor version.

  **Example:** `0.1`

### Body**required**

* **name** string required\
  **Example:** `MY_ENV_VAR`
* **value** string required\
  **Example:** `my-value`
* **isSecret** boolean | null nullable\
  **Example:** `false`

### Status 201

**Response Headers**

* **Location**


```
{
  "data": {
    "name": "MY_ENV_VAR",
    "value": "my-value",
    "isSecret": false
  }
}
```


**Schema**

* **data** object required

  * **name** string required\
    **Example:** `MY_ENV_VAR`
  * **value** string required\
    **Example:** `my-value`
  * **isSecret** boolean | null nullable\
    **Example:** `false`

### Status 400

Bad request - invalid input parameters or request body.


```
{
  "error": {
    "type": "invalid-input",
    "message": "Invalid input: The request body contains invalid data."
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`

### Status 401

Unauthorized - authentication required or invalid token.


```
{
  "error": {
    "type": "token-not-valid",
    "message": "Authentication token is not valid."
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`

### Status 403

Forbidden - insufficient permissions to perform this action.


```
{
  "error": {
    "type": "permission-denied",
    "message": "You do not have permission to perform this action."
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`

### Status 404

Not found - the requested resource was not found.


```
{
  "error": {
    "type": "actor-not-found",
    "message": "Actor was not found"
  }
}
```


**Schema**

* **error** object

  * **type** string

    **Possible values:** \[`actor-not-found`]

  * **message** string\
    **Example:** `Actor was not found`

### Status 405

Method not allowed.


```
{
  "error": {
    "type": "method-not-allowed",
    "message": "This API end-point can only be accessed using the following HTTP methods: OPTIONS,GET"
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`

### Status 413

Payload too large - the request body exceeds the size limit.


```
{
  "error": {
    "type": "request-too-large",
    "message": "The POST payload is too large (limit: 9437184 bytes, actual length: 10485760 bytes)."
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`

### Status 415

Unsupported media type - the Content-Encoding of the request is not supported.


```
{
  "error": {
    "type": "unsupported-content-encoding",
    "message": "Content-Encoding \"bla\" is not supported."
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`

### Status 429

Too many requests - rate limit exceeded.


```
{
  "error": {
    "type": "rate-limit-exceeded",
    "message": "You have exceeded the rate limit. Please try again later."
  }
}
```


**Schema**

* **error** object required

  * **type** string required\
    **Example:** `run-failed`
  * **message** string required\
    **Example:** `Actor run did not succeed (run ID: 55uatRrZib4xbZs, status: FAILED)`