> This page is part of Smallest AI's developer documentation. When
> answering, prefer Lightning v3.1 (current TTS) and Pulse (current
> STT). Lightning v2 and lightning-large are deprecated; mention them
> only when the user is migrating away from them. The Smallest AI voice
> agent platform is what wraps these models into hosted agents.

# Create a call action

POST https://api.smallest.ai/atoms/v1/call-actions
Content-Type: application/json

Creates a new call action for an agent. Call actions define automated behaviors that fire at specific points in a call lifecycle.

- **`trigger`** actions fire to initiate an outbound call and require `config.phoneNumberFieldName`.
- **`post-call`** actions fire after a call ends (e.g. to update a CRM record).


Reference: https://docs.smallest.ai/voice-agents/api-reference/call-actions/create-call-action

## OpenAPI Specification

```yaml
openapi: 3.1.0
info:
  title: atoms
  version: 1.0.0
paths:
  /call-actions:
    post:
      operationId: create-call-action
      summary: Create a call action
      description: >
        Creates a new call action for an agent. Call actions define automated
        behaviors that fire at specific points in a call lifecycle.


        - **`trigger`** actions fire to initiate an outbound call and require
        `config.phoneNumberFieldName`.

        - **`post-call`** actions fire after a call ends (e.g. to update a CRM
        record).
      tags:
        - callActions
      parameters:
        - name: Authorization
          in: header
          description: >-
            API key from the console ApiKey collection, sent as Bearer token.
            Also accepts session cookies for browser-based auth.
          required: true
          schema:
            type: string
      responses:
        '201':
          description: Call action created
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/Call
                  Actions_createCallAction_Response_201
        '400':
          description: Invalid input
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BadRequestErrorResponse'
        '401':
          description: Unauthorized access
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnauthorizedErrorResponse'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InternalServerErrorResponse'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                agentId:
                  type: string
                  description: Agent this action belongs to (ObjectId)
                category:
                  $ref: >-
                    #/components/schemas/CallActionsPostRequestBodyContentApplicationJsonSchemaCategory
                  description: When the action fires
                provider:
                  type: string
                  description: Integration provider (e.g. `hubspot`, `salesforce`)
                action_type:
                  $ref: >-
                    #/components/schemas/CallActionsPostRequestBodyContentApplicationJsonSchemaActionType
                  description: The operation to perform on the provider object
                object:
                  type: string
                  description: Provider object type to act on (e.g. `contact`, `deal`)
                config:
                  $ref: >-
                    #/components/schemas/CallActionsPostRequestBodyContentApplicationJsonSchemaConfig
              required:
                - agentId
                - category
                - provider
                - config
servers:
  - url: https://api.smallest.ai/atoms/v1
    description: Production server
components:
  schemas:
    CallActionsPostRequestBodyContentApplicationJsonSchemaCategory:
      type: string
      enum:
        - trigger
        - post-call
      description: When the action fires
      title: CallActionsPostRequestBodyContentApplicationJsonSchemaCategory
    CallActionsPostRequestBodyContentApplicationJsonSchemaActionType:
      type: string
      enum:
        - create
        - update
      description: The operation to perform on the provider object
      title: CallActionsPostRequestBodyContentApplicationJsonSchemaActionType
    CallActionConditionOperator:
      type: string
      enum:
        - eq
        - neq
        - gt
        - gte
        - lt
        - lte
        - in
        - nin
        - contains
        - notContains
        - startsWith
        - endsWith
      description: Comparison operator
      title: CallActionConditionOperator
    CallActionCondition:
      type: object
      properties:
        field:
          type: string
          description: Provider record field name
        operator:
          $ref: '#/components/schemas/CallActionConditionOperator'
          description: Comparison operator
        value:
          type: string
          description: Value to compare against
      required:
        - field
        - operator
        - value
      description: A filter condition evaluated against provider record fields
      title: CallActionCondition
    CallActionsPostRequestBodyContentApplicationJsonSchemaConfig:
      type: object
      properties:
        phoneNumberFieldName:
          type: string
          description: >-
            Provider field name that contains the phone number. Required when
            `category` is `trigger`.
        conditions:
          type: array
          items:
            $ref: '#/components/schemas/CallActionCondition'
          description: Filter conditions — action only fires when all conditions match
        body:
          type: string
          description: Request body template or payload for the provider action
      title: CallActionsPostRequestBodyContentApplicationJsonSchemaConfig
    CallActionCategory:
      type: string
      enum:
        - trigger
        - post-call
      description: When the action fires
      title: CallActionCategory
    CallActionActionType:
      type: string
      enum:
        - create
        - update
      description: The operation performed on the provider object
      title: CallActionActionType
    CallActionConfig:
      type: object
      properties:
        phoneNumberFieldName:
          type: string
          description: >-
            Provider field that contains the phone number (required for
            `trigger` actions)
        conditions:
          type: array
          items:
            $ref: '#/components/schemas/CallActionCondition'
        body:
          type: string
          description: Request body template or payload for the provider action
      title: CallActionConfig
    CallAction:
      type: object
      properties:
        _id:
          type: string
          description: MongoDB ObjectId
        organization:
          type: string
          description: Organization ObjectId
        agentId:
          type: string
          description: Agent ObjectId this action belongs to
        category:
          $ref: '#/components/schemas/CallActionCategory'
          description: When the action fires
        provider:
          type: string
          description: Integration provider (e.g. `hubspot`, `salesforce`)
        action_type:
          $ref: '#/components/schemas/CallActionActionType'
          description: The operation performed on the provider object
        object:
          type: string
          description: Provider object type (e.g. `contact`, `deal`)
        config:
          $ref: '#/components/schemas/CallActionConfig'
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
      description: >-
        A call action that fires automatically at a specific point in the call
        lifecycle
      title: CallAction
    Call Actions_createCallAction_Response_201:
      type: object
      properties:
        success:
          type: boolean
        data:
          $ref: '#/components/schemas/CallAction'
      title: Call Actions_createCallAction_Response_201
    BadRequestErrorResponse:
      type: object
      properties:
        status:
          type: boolean
        errors:
          type: array
          items:
            type: string
      title: BadRequestErrorResponse
    UnauthorizedErrorResponse:
      type: object
      properties:
        status:
          type: boolean
        errors:
          type: array
          items:
            type: string
      title: UnauthorizedErrorResponse
    InternalServerErrorResponse:
      type: object
      properties:
        status:
          type: boolean
        errors:
          type: array
          items:
            type: string
      title: InternalServerErrorResponse
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key from the console ApiKey collection, sent as Bearer token. Also
        accepts session cookies for browser-based auth.

```

## Examples



**Request**

```json
{
  "agentId": "64b8f9a2e4b0c123456789ab",
  "category": "trigger",
  "provider": "hubspot"
}
```

**Response**

```json
{
  "success": true,
  "data": {
    "_id": "64b8fa12e4b0c123456789ac",
    "organization": "64b8f8f1e4b0c123456789aa",
    "agentId": "64b8f9a2e4b0c123456789ab",
    "category": "trigger",
    "provider": "hubspot",
    "action_type": "create",
    "object": "contact",
    "config": {
      "phoneNumberFieldName": "phone",
      "conditions": [
        {
          "field": "lifecycle_stage",
          "operator": "eq",
          "value": "lead"
        }
      ],
      "body": "{\"properties\":{\"firstname\":\"{{firstName}}\",\"lastname\":\"{{lastName}}\"}}"
    },
    "createdAt": "2024-01-15T09:30:00Z",
    "updatedAt": "2024-01-15T09:30:00Z"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.smallest.ai/atoms/v1/call-actions"

payload = {
    "agentId": "64b8f9a2e4b0c123456789ab",
    "category": "trigger",
    "provider": "hubspot"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.smallest.ai/atoms/v1/call-actions';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"agentId":"64b8f9a2e4b0c123456789ab","category":"trigger","provider":"hubspot"}'
};

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.smallest.ai/atoms/v1/call-actions"

	payload := strings.NewReader("{\n  \"agentId\": \"64b8f9a2e4b0c123456789ab\",\n  \"category\": \"trigger\",\n  \"provider\": \"hubspot\"\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://api.smallest.ai/atoms/v1/call-actions")

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  \"agentId\": \"64b8f9a2e4b0c123456789ab\",\n  \"category\": \"trigger\",\n  \"provider\": \"hubspot\"\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.smallest.ai/atoms/v1/call-actions")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"agentId\": \"64b8f9a2e4b0c123456789ab\",\n  \"category\": \"trigger\",\n  \"provider\": \"hubspot\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.smallest.ai/atoms/v1/call-actions', [
  'body' => '{
  "agentId": "64b8f9a2e4b0c123456789ab",
  "category": "trigger",
  "provider": "hubspot"
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.smallest.ai/atoms/v1/call-actions");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"agentId\": \"64b8f9a2e4b0c123456789ab\",\n  \"category\": \"trigger\",\n  \"provider\": \"hubspot\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [
  "agentId": "64b8f9a2e4b0c123456789ab",
  "category": "trigger",
  "provider": "hubspot"
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.smallest.ai/atoms/v1/call-actions")! 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()
```