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POST
/
v1
/
voice-agents
/
campaigns
Create an outbound campaign
curl --request POST \
  --url https://api.tryhamsa.com/v1/voice-agents/campaigns \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Q1 Customer Outreach",
  "phoneNumber": "+14155551212",
  "voiceAgentId": "68f7656f-098b-4c43-b165-7cfd2cc8ac40",
  "recipients": [
    {
      "phoneNumber": "+1234567890",
      "ignoreE164Validation": false,
      "name": "John Doe"
    }
  ],
  "sendType": "NOW",
  "timeRange": {
    "days": [
      "MONDAY",
      "TUESDAY",
      "WEDNESDAY"
    ],
    "startCallingTime": "09:00",
    "endCallingTime": "17:00"
  },
  "reservedConcurrency": 10,
  "scheduledDate": "2025-12-01T09:00:00Z",
  "scheduledTimezone": "America/New_York"
}
'
{
  "success": true,
  "message": "Campaign created successfully",
  "messageKey": "CAMPAIGN_CREATED_SUCCESSFULLY",
  "data": {
    "id": "a8f7656f-098b-4c43-b165-7cfd2cc8ac50",
    "name": "Q1 Customer Outreach",
    "status": "SCHEDULED",
    "sendType": "NOW",
    "scheduledDate": "2025-12-01T09:00:00Z",
    "scheduledTimezone": "America/New_York",
    "timeRange": {
      "days": [
        "MONDAY",
        "TUESDAY",
        "WEDNESDAY"
      ],
      "startCallingTime": "09:00",
      "endCallingTime": "17:00"
    },
    "reservedConcurrency": 10,
    "webhookUrl": "https://example.com/webhook",
    "projectId": "48f7656f-098b-4c43-b165-7cfd2cc8ac30",
    "userId": "48f7656f-098b-4c43-b165-7cfd2cc8ac30",
    "voiceAgentId": "68f7656f-098b-4c43-b165-7cfd2cc8ac40",
    "phoneNumberId": "48f7656f-098b-4c43-b165-7cfd2cc8ac30",
    "createdAt": "2025-12-06T10:00:00.000Z",
    "updatedAt": "2025-12-06T10:00:00.000Z"
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.tryhamsa.com/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

Pass the API key in the Authorization header, You need to put Token keyword before the API key. e.g. 'Authorization: Token '

Body

application/json
​
name
string
required

Campaign name (1-100 characters).

Required string length: 1 - 100
Example:

"Q1 Customer Outreach"

​
phoneNumber
string
required

Phone number to use for the campaign in E.164 format.

Example:

"+14155551212"

​
voiceAgentId
string<uuid>
required

Voice agent ID to use for the campaign.

Example:

"68f7656f-098b-4c43-b165-7cfd2cc8ac40"

​
recipients
object[]
required

List of recipients for the campaign (minimum 1 recipient).

Minimum array length: 1
​
sendType
enum<string>
required

When to send the campaign. Use 'NOW' for immediate sending or 'SCHEDULED' for scheduled sending.

Available options:
NOW,
SCHEDULED
Example:

"NOW"

​
timeRange
object
required

Time range for making calls.

​
reservedConcurrency
integer
required

Number of concurrent calls reserved for this campaign (must be positive).

Required range: x >= 1
Example:

10

​
scheduledDate
string<date-time>

Scheduled date/time in ISO 8601 format (required when sendType is SCHEDULED).

Example:

"2025-12-01T09:00:00Z"

​
scheduledTimezone
string

Timezone for scheduled campaign (required when sendType is SCHEDULED).

Example:

"America/New_York"

Response

Successful response

​
success
boolean
Example:

true

​
message
string
Example:

"Campaign created successfully"

​
messageKey
string
Example:

"CAMPAIGN_CREATED_SUCCESSFULLY"

​
data
object