# Execute workflow

POST

/v1/workspaces/{workspace\_id}/workflows/{workflow\_id}/runs

```bash
curl --request POST \
  --url https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "inputs": {},
  "session_id": "<uuid>",
  "session_name": "<string>"
}'
```

```python
import requests


url = "https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs"


payload = {
    "inputs": {},
    "session_id": "<uuid>",
    "session_name": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}


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


print(response.json())
```

```js
const url = 'https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"inputs":{},"session_id":"<uuid>","session_name":"<string>"}'
};


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.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs"


  payload := strings.NewReader("{\n  \"inputs\": {},\n  \"session_id\": \"<uuid>\",\n  \"session_name\": \"<string>\"\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))


}
```

```php
<?php


$curl = curl_init();


curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'inputs' => [


    ],
    'session_id' => '<uuid>',
    'session_name' => '<string>'
  ]),
  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;
}
```

```java
OkHttpClient client = new OkHttpClient();


MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\n  \"inputs\": {},\n  \"session_id\": \"<uuid>\",\n  \"session_name\": \"<string>\"\n}");
Request request = new Request.Builder()
  .url("https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs")
  .post(body)
  .addHeader("Authorization", "Bearer <token>")
  .addHeader("Content-Type", "application/json")
  .build();


Response response = client.newCall(request).execute();
```

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


url = URI("https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs")


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  \"inputs\": {},\n  \"session_id\": \"<uuid>\",\n  \"session_name\": \"<string>\"\n}"


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

```csharp
var client = new RestClient("https://api.app.layer.ai/api/v1/workspaces/:workspace_id/workflows/:workflow_id/runs");
var request = new RestRequest("", Method.Post);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"inputs\": {},\n  \"session_id\": \"<uuid>\",\n  \"session_name\": \"<string>\"\n}", ParameterType.RequestBody);
var response = client.Execute(request);
```

* Production

Start a workflow execution. Returns immediately with a run ID. Poll with GET /workspaces/{workspace\_id}/workflows/{workflow\_id}/runs/{run\_id} for results. Creative Units are not checked here: an underfunded workspace is still accepted and the run then reports FAILURE with error\_code BlueprintInsufficientBalanceError. Use the estimate endpoint’s has\_sufficient\_creative\_units to check before submitting.

## Authorizations

* **[bearerAuth](/docs/rest-api#bearerauth)**

## Parameters

### Path Parameters

**workspace\_id**

required

_Workspace Id_

string format: uuid

**workflow\_id**

required

_Workflow Id_

string format: uuid

## Request Bodyrequired

_ExecuteWorkflowRequest_object

**inputs**

required

_Inputs_

Input values matching the workflow’s input schema.

object

**_key_**

additional properties

any

**session\_id**

Any of:

**string**

string format: uuid

**null**

null

**session\_name**

Any of:

**string**

string

**null**

null

##### Examplegenerated

```json
{
  "inputs": {},
  "session_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0",
  "session_name": "example"
}
```

## Responses

### 202

Successful Response

_ExecuteWorkflowOutput_object

**run\_id**

required

_Run Id_

Unique identifier for this workflow run.

string format: uuid

**status**

required

_BlueprintRunStatus_

Current run status: PENDING or RUNNING.

string

Allowed values: pending running success failure cancelled

**estimated\_price\_creative\_units**

required

_Estimated Price Creative Units_

Estimated price in Creative Units.

number

**poll\_interval\_seconds**

required

_Poll Interval Seconds_

Suggested polling interval in seconds.

integer

**created\_at**

required

_Created At_

Timestamp of when the run was created.

string format: date-time

**session\_id**

Any of:

**string**

string format: uuid

**null**

null

##### Example

```json
{
  "status": "pending"
}
```

### 401

Unauthenticated — missing or invalid Bearer token.

object

**type**

required

string

**title**

required

string

**status**

required

integer

**detail**

required

string

##### Example

```json
{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}
```

### 403

Forbidden — insufficient permissions.

object

**type**

required

string

**title**

required

string

**status**

required

integer

**detail**

required

string

##### Example

```json
{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}
```

### 404

Resource not found.

object

**type**

required

string

**title**

required

string

**status**

required

integer

**detail**

required

string

##### Example

```json
{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}
```

### 422

Invalid input parameters.

object

**type**

required

string

**title**

required

string

**status**

required

integer

**detail**

required

string

##### Example

```json
{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}
```

### 429

Rate limited — too many concurrent requests.

object

**type**

required

string

**title**

required

string

**status**

required

integer

**detail**

required

string

##### Example

```json
{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}
```

### 500

Internal server error.

object

**type**

required

string

**title**

required

string

**status**

required

integer

**detail**

required

string

##### Example

```json
{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}
```