Update Outbound Communication Campaign

Python (SDK)

import os
from syllable_sdk import SyllableSDK, models


with SyllableSDK(
    api_key_header=os.getenv("SYLLABLESDK_API_KEY_HEADER", ""),
) as ss_client:

    res = ss_client.outbound.campaigns.update(campaign_id=187717, outbound_campaign_input=models.OutboundCampaignInput(
        campaign_name="Outbound Campaign 1",
        description="This is a test campaign",
        mode="voice",
        sms_session_ttl=720,
        labels=[
            "test",
            "demo",
        ],
        campaign_variables={
            "key": "value",
            "key2": "value2",
        },
        daily_start_time="09:00:00",
        daily_end_time="17:00:00",
        source="+19032900844",
        caller_id="19995551234",
        hourly_rate=25,
        max_daily_calls=2500,
        retry_count=1,
        retry_interval="30m",
        active_days=[
            models.DaysOfWeek.MON,
            models.DaysOfWeek.TUE,
            models.DaysOfWeek.WED,
            models.DaysOfWeek.THU,
            models.DaysOfWeek.FRI,
        ],
        voicemail_detection=models.VoicemailDetectionConfig(
            voicemail_detection_overall_timeout=30,
            voicemail_detection_pre_speech_timeout=3.5,
            voicemail_detection_post_speech_timeout=1.75,
        ),
        allowed_line_types=[
            models.LineTypeBucket.MOBILE,
            models.LineTypeBucket.VOIP,
        ],
        target_filters=models.TargetFilters(
            match=models.Match.ANY,
            rules=[
                models.TargetFilterRule(
                    field="line_type",
                    op=models.FilterOp.IN,
                    values=[
                        "landline",
                        "fixedVoip",
                        "nonFixedVoip",
                    ],
                ),
                models.TargetFilterRule(
                    field="carrier_name",
                    op=models.FilterOp.IN,
                    values=[
                        "Onvoy, LLC - Sinch",
                    ],
                ),
            ],
        ),
        webhooks=[
            models.OutboundCampaignWebhookInput(
                trigger_statuses=[
                    models.ChannelManagerStatus.COMPLETED,
                ],
                url="https://example.com/hooks/syllable",
                request_method="POST",
            ),
        ],
    ))

    # Handle response
    print(res)

import { SyllableSDK } from "syllable-sdk";

const syllableSDK = new SyllableSDK({
  apiKeyHeader: process.env["SYLLABLESDK_API_KEY_HEADER"] ?? "",
});

async function run() {
  const result = await syllableSDK.outbound.campaigns.update({
    campaignId: 679645,
    outboundCampaignInput: {
      campaignName: "Outbound Campaign 1",
      description: "This is a test campaign",
      mode: "voice",
      smsSessionTtl: 720,
      labels: [
        "test",
        "demo",
      ],
      campaignVariables: {
        "key": "value",
        "key2": "value2",
      },
      dailyStartTime: "09:00:00",
      dailyEndTime: "17:00:00",
      source: "+19032900844",
      callerId: "19995551234",
      hourlyRate: 25,
      maxDailyCalls: 2500,
      retryCount: 1,
      retryInterval: "30m",
      activeDays: [
        "mon",
        "tue",
        "wed",
        "thu",
        "fri",
      ],
      voicemailDetection: {
        voicemailDetectionOverallTimeout: 30,
        voicemailDetectionPreSpeechTimeout: 3.5,
        voicemailDetectionPostSpeechTimeout: 1.75,
      },
      allowedLineTypes: [
        "mobile",
        "voip",
      ],
      targetFilters: {
        match: "any",
        rules: [
          {
            field: "line_type",
            op: "in",
            values: [
              "landline",
              "fixedVoip",
              "nonFixedVoip",
            ],
          },
          {
            field: "carrier_name",
            op: "in",
            values: [
              "Onvoy, LLC - Sinch",
            ],
          },
        ],
      },
      webhooks: [
        {
          triggerStatuses: [
            "COMPLETED",
          ],
          url: "https://example.com/hooks/syllable",
          requestMethod: "POST",
        },
      ],
    },
  });

  console.log(result);
}

run();

curl --request PUT \
  --url https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id} \
  --header 'Content-Type: application/json' \
  --header 'Syllable-API-Key: <api-key>' \
  --data '
{
  "campaign_name": "Outbound Campaign 1",
  "campaign_variables": {
    "key": "value",
    "key2": "value2"
  },
  "caller_id": 19995551234,
  "active_days": "[\"mon\", \"tue\", \"wed\", \"thu\", \"fri\"]",
  "description": "This is a test campaign",
  "mode": "voice",
  "sms_session_ttl": 720,
  "label": "test",
  "labels": [
    "test",
    "demo"
  ],
  "daily_start_time": "09:00:00",
  "daily_end_time": "17:00:00",
  "source": "+19032900844",
  "hourly_rate": 25,
  "max_daily_calls": 2500,
  "retry_count": 1,
  "retry_interval": "30m",
  "voicemail_detection": {
    "voicemail_detection_overall_timeout": 30,
    "voicemail_detection_post_speech_timeout": 1.75,
    "voicemail_detection_pre_speech_timeout": 3.5
  },
  "allowed_line_types": [
    "mobile",
    "voip"
  ],
  "include_unknown_line_types": true,
  "target_filters": {
    "match": "any",
    "on_unknown": "include",
    "rules": [
      {
        "field": "line_type",
        "op": "in",
        "values": [
          "landline",
          "fixedVoip",
          "nonFixedVoip"
        ]
      },
      {
        "field": "carrier_name",
        "op": "in",
        "values": [
          "Onvoy, LLC - Sinch"
        ]
      }
    ]
  },
  "webhooks": {
    "request_method": "POST",
    "trigger_statuses": [
      "COMPLETED"
    ],
    "url": "https://example.com/hooks/syllable"
  }
}
'

const options = {
  method: 'PUT',
  headers: {'Syllable-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    campaign_name: 'Outbound Campaign 1',
    campaign_variables: {key: 'value', key2: 'value2'},
    caller_id: 19995551234,
    active_days: '["mon", "tue", "wed", "thu", "fri"]',
    description: 'This is a test campaign',
    mode: 'voice',
    sms_session_ttl: 720,
    label: 'test',
    labels: ['test', 'demo'],
    daily_start_time: '09:00:00',
    daily_end_time: '17:00:00',
    source: '+19032900844',
    hourly_rate: 25,
    max_daily_calls: 2500,
    retry_count: 1,
    retry_interval: '30m',
    voicemail_detection: {
      voicemail_detection_overall_timeout: 30,
      voicemail_detection_post_speech_timeout: 1.75,
      voicemail_detection_pre_speech_timeout: 3.5
    },
    allowed_line_types: ['mobile', 'voip'],
    include_unknown_line_types: true,
    target_filters: {
      match: 'any',
      on_unknown: 'include',
      rules: [
        {
          field: 'line_type',
          op: 'in',
          values: ['landline', 'fixedVoip', 'nonFixedVoip']
        },
        {field: 'carrier_name', op: 'in', values: ['Onvoy, LLC - Sinch']}
      ]
    },
    webhooks: {
      request_method: 'POST',
      trigger_statuses: ['COMPLETED'],
      url: 'https://example.com/hooks/syllable'
    }
  })
};

fetch('https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'campaign_name' => 'Outbound Campaign 1',
    'campaign_variables' => [
        'key' => 'value',
        'key2' => 'value2'
    ],
    'caller_id' => 19995551234,
    'active_days' => '["mon", "tue", "wed", "thu", "fri"]',
    'description' => 'This is a test campaign',
    'mode' => 'voice',
    'sms_session_ttl' => 720,
    'label' => 'test',
    'labels' => [
        'test',
        'demo'
    ],
    'daily_start_time' => '09:00:00',
    'daily_end_time' => '17:00:00',
    'source' => '+19032900844',
    'hourly_rate' => 25,
    'max_daily_calls' => 2500,
    'retry_count' => 1,
    'retry_interval' => '30m',
    'voicemail_detection' => [
        'voicemail_detection_overall_timeout' => 30,
        'voicemail_detection_post_speech_timeout' => 1.75,
        'voicemail_detection_pre_speech_timeout' => 3.5
    ],
    'allowed_line_types' => [
        'mobile',
        'voip'
    ],
    'include_unknown_line_types' => true,
    'target_filters' => [
        'match' => 'any',
        'on_unknown' => 'include',
        'rules' => [
                [
                                'field' => 'line_type',
                                'op' => 'in',
                                'values' => [
                                                                'landline',
                                                                'fixedVoip',
                                                                'nonFixedVoip'
                                ]
                ],
                [
                                'field' => 'carrier_name',
                                'op' => 'in',
                                'values' => [
                                                                'Onvoy, LLC - Sinch'
                                ]
                ]
        ]
    ],
    'webhooks' => [
        'request_method' => 'POST',
        'trigger_statuses' => [
                'COMPLETED'
        ],
        'url' => 'https://example.com/hooks/syllable'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "Syllable-API-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}"

	payload := strings.NewReader("{\n  \"campaign_name\": \"Outbound Campaign 1\",\n  \"campaign_variables\": {\n    \"key\": \"value\",\n    \"key2\": \"value2\"\n  },\n  \"caller_id\": 19995551234,\n  \"active_days\": \"[\\\"mon\\\", \\\"tue\\\", \\\"wed\\\", \\\"thu\\\", \\\"fri\\\"]\",\n  \"description\": \"This is a test campaign\",\n  \"mode\": \"voice\",\n  \"sms_session_ttl\": 720,\n  \"label\": \"test\",\n  \"labels\": [\n    \"test\",\n    \"demo\"\n  ],\n  \"daily_start_time\": \"09:00:00\",\n  \"daily_end_time\": \"17:00:00\",\n  \"source\": \"+19032900844\",\n  \"hourly_rate\": 25,\n  \"max_daily_calls\": 2500,\n  \"retry_count\": 1,\n  \"retry_interval\": \"30m\",\n  \"voicemail_detection\": {\n    \"voicemail_detection_overall_timeout\": 30,\n    \"voicemail_detection_post_speech_timeout\": 1.75,\n    \"voicemail_detection_pre_speech_timeout\": 3.5\n  },\n  \"allowed_line_types\": [\n    \"mobile\",\n    \"voip\"\n  ],\n  \"include_unknown_line_types\": true,\n  \"target_filters\": {\n    \"match\": \"any\",\n    \"on_unknown\": \"include\",\n    \"rules\": [\n      {\n        \"field\": \"line_type\",\n        \"op\": \"in\",\n        \"values\": [\n          \"landline\",\n          \"fixedVoip\",\n          \"nonFixedVoip\"\n        ]\n      },\n      {\n        \"field\": \"carrier_name\",\n        \"op\": \"in\",\n        \"values\": [\n          \"Onvoy, LLC - Sinch\"\n        ]\n      }\n    ]\n  },\n  \"webhooks\": {\n    \"request_method\": \"POST\",\n    \"trigger_statuses\": [\n      \"COMPLETED\"\n    ],\n    \"url\": \"https://example.com/hooks/syllable\"\n  }\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("Syllable-API-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.put("https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}")
  .header("Syllable-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"campaign_name\": \"Outbound Campaign 1\",\n  \"campaign_variables\": {\n    \"key\": \"value\",\n    \"key2\": \"value2\"\n  },\n  \"caller_id\": 19995551234,\n  \"active_days\": \"[\\\"mon\\\", \\\"tue\\\", \\\"wed\\\", \\\"thu\\\", \\\"fri\\\"]\",\n  \"description\": \"This is a test campaign\",\n  \"mode\": \"voice\",\n  \"sms_session_ttl\": 720,\n  \"label\": \"test\",\n  \"labels\": [\n    \"test\",\n    \"demo\"\n  ],\n  \"daily_start_time\": \"09:00:00\",\n  \"daily_end_time\": \"17:00:00\",\n  \"source\": \"+19032900844\",\n  \"hourly_rate\": 25,\n  \"max_daily_calls\": 2500,\n  \"retry_count\": 1,\n  \"retry_interval\": \"30m\",\n  \"voicemail_detection\": {\n    \"voicemail_detection_overall_timeout\": 30,\n    \"voicemail_detection_post_speech_timeout\": 1.75,\n    \"voicemail_detection_pre_speech_timeout\": 3.5\n  },\n  \"allowed_line_types\": [\n    \"mobile\",\n    \"voip\"\n  ],\n  \"include_unknown_line_types\": true,\n  \"target_filters\": {\n    \"match\": \"any\",\n    \"on_unknown\": \"include\",\n    \"rules\": [\n      {\n        \"field\": \"line_type\",\n        \"op\": \"in\",\n        \"values\": [\n          \"landline\",\n          \"fixedVoip\",\n          \"nonFixedVoip\"\n        ]\n      },\n      {\n        \"field\": \"carrier_name\",\n        \"op\": \"in\",\n        \"values\": [\n          \"Onvoy, LLC - Sinch\"\n        ]\n      }\n    ]\n  },\n  \"webhooks\": {\n    \"request_method\": \"POST\",\n    \"trigger_statuses\": [\n      \"COMPLETED\"\n    ],\n    \"url\": \"https://example.com/hooks/syllable\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Syllable-API-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"campaign_name\": \"Outbound Campaign 1\",\n  \"campaign_variables\": {\n    \"key\": \"value\",\n    \"key2\": \"value2\"\n  },\n  \"caller_id\": 19995551234,\n  \"active_days\": \"[\\\"mon\\\", \\\"tue\\\", \\\"wed\\\", \\\"thu\\\", \\\"fri\\\"]\",\n  \"description\": \"This is a test campaign\",\n  \"mode\": \"voice\",\n  \"sms_session_ttl\": 720,\n  \"label\": \"test\",\n  \"labels\": [\n    \"test\",\n    \"demo\"\n  ],\n  \"daily_start_time\": \"09:00:00\",\n  \"daily_end_time\": \"17:00:00\",\n  \"source\": \"+19032900844\",\n  \"hourly_rate\": 25,\n  \"max_daily_calls\": 2500,\n  \"retry_count\": 1,\n  \"retry_interval\": \"30m\",\n  \"voicemail_detection\": {\n    \"voicemail_detection_overall_timeout\": 30,\n    \"voicemail_detection_post_speech_timeout\": 1.75,\n    \"voicemail_detection_pre_speech_timeout\": 3.5\n  },\n  \"allowed_line_types\": [\n    \"mobile\",\n    \"voip\"\n  ],\n  \"include_unknown_line_types\": true,\n  \"target_filters\": {\n    \"match\": \"any\",\n    \"on_unknown\": \"include\",\n    \"rules\": [\n      {\n        \"field\": \"line_type\",\n        \"op\": \"in\",\n        \"values\": [\n          \"landline\",\n          \"fixedVoip\",\n          \"nonFixedVoip\"\n        ]\n      },\n      {\n        \"field\": \"carrier_name\",\n        \"op\": \"in\",\n        \"values\": [\n          \"Onvoy, LLC - Sinch\"\n        ]\n      }\n    ]\n  },\n  \"webhooks\": {\n    \"request_method\": \"POST\",\n    \"trigger_statuses\": [\n      \"COMPLETED\"\n    ],\n    \"url\": \"https://example.com/hooks/syllable\"\n  }\n}"

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

{
  "campaign_name": "Outbound Campaign 1",
  "campaign_variables": {
    "key": "value",
    "key2": "value2"
  },
  "caller_id": 19995551234,
  "active_days": "[\"mon\", \"tue\", \"wed\", \"thu\", \"fri\"]",
  "id": 1,
  "last_updated_by": "user@email.com",
  "description": "This is a test campaign",
  "mode": "voice",
  "sms_session_ttl": 720,
  "label": "test",
  "labels": [
    "test",
    "demo"
  ],
  "daily_start_time": "09:00:00",
  "daily_end_time": "17:00:00",
  "source": "+19032900844",
  "hourly_rate": 25,
  "max_daily_calls": 2500,
  "retry_count": 1,
  "retry_interval": "30m",
  "voicemail_detection": {
    "voicemail_detection_overall_timeout": 30,
    "voicemail_detection_post_speech_timeout": 1.75,
    "voicemail_detection_pre_speech_timeout": 3.5
  },
  "allowed_line_types": [
    "mobile",
    "voip"
  ],
  "include_unknown_line_types": true,
  "target_filters": {
    "match": "any",
    "on_unknown": "include",
    "rules": [
      {
        "field": "line_type",
        "op": "in",
        "values": [
          "landline",
          "fixedVoip",
          "nonFixedVoip"
        ]
      },
      {
        "field": "carrier_name",
        "op": "in",
        "values": [
          "Onvoy, LLC - Sinch"
        ]
      }
    ]
  },
  "agent_id": "agent_id",
  "created_at": "2026-08-20T00:00:00Z",
  "updated_at": "2026-08-20T00:00:00Z",
  "webhooks": {
    "id": 1,
    "request_method": "POST",
    "trigger_statuses": [
      "COMPLETED"
    ],
    "url": "https://example.com/hooks/syllable"
  }
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

PUT

api

outbound

campaigns

{campaign_id}

Python (SDK)

import os
from syllable_sdk import SyllableSDK, models


with SyllableSDK(
    api_key_header=os.getenv("SYLLABLESDK_API_KEY_HEADER", ""),
) as ss_client:

    res = ss_client.outbound.campaigns.update(campaign_id=187717, outbound_campaign_input=models.OutboundCampaignInput(
        campaign_name="Outbound Campaign 1",
        description="This is a test campaign",
        mode="voice",
        sms_session_ttl=720,
        labels=[
            "test",
            "demo",
        ],
        campaign_variables={
            "key": "value",
            "key2": "value2",
        },
        daily_start_time="09:00:00",
        daily_end_time="17:00:00",
        source="+19032900844",
        caller_id="19995551234",
        hourly_rate=25,
        max_daily_calls=2500,
        retry_count=1,
        retry_interval="30m",
        active_days=[
            models.DaysOfWeek.MON,
            models.DaysOfWeek.TUE,
            models.DaysOfWeek.WED,
            models.DaysOfWeek.THU,
            models.DaysOfWeek.FRI,
        ],
        voicemail_detection=models.VoicemailDetectionConfig(
            voicemail_detection_overall_timeout=30,
            voicemail_detection_pre_speech_timeout=3.5,
            voicemail_detection_post_speech_timeout=1.75,
        ),
        allowed_line_types=[
            models.LineTypeBucket.MOBILE,
            models.LineTypeBucket.VOIP,
        ],
        target_filters=models.TargetFilters(
            match=models.Match.ANY,
            rules=[
                models.TargetFilterRule(
                    field="line_type",
                    op=models.FilterOp.IN,
                    values=[
                        "landline",
                        "fixedVoip",
                        "nonFixedVoip",
                    ],
                ),
                models.TargetFilterRule(
                    field="carrier_name",
                    op=models.FilterOp.IN,
                    values=[
                        "Onvoy, LLC - Sinch",
                    ],
                ),
            ],
        ),
        webhooks=[
            models.OutboundCampaignWebhookInput(
                trigger_statuses=[
                    models.ChannelManagerStatus.COMPLETED,
                ],
                url="https://example.com/hooks/syllable",
                request_method="POST",
            ),
        ],
    ))

    # Handle response
    print(res)

import { SyllableSDK } from "syllable-sdk";

const syllableSDK = new SyllableSDK({
  apiKeyHeader: process.env["SYLLABLESDK_API_KEY_HEADER"] ?? "",
});

async function run() {
  const result = await syllableSDK.outbound.campaigns.update({
    campaignId: 679645,
    outboundCampaignInput: {
      campaignName: "Outbound Campaign 1",
      description: "This is a test campaign",
      mode: "voice",
      smsSessionTtl: 720,
      labels: [
        "test",
        "demo",
      ],
      campaignVariables: {
        "key": "value",
        "key2": "value2",
      },
      dailyStartTime: "09:00:00",
      dailyEndTime: "17:00:00",
      source: "+19032900844",
      callerId: "19995551234",
      hourlyRate: 25,
      maxDailyCalls: 2500,
      retryCount: 1,
      retryInterval: "30m",
      activeDays: [
        "mon",
        "tue",
        "wed",
        "thu",
        "fri",
      ],
      voicemailDetection: {
        voicemailDetectionOverallTimeout: 30,
        voicemailDetectionPreSpeechTimeout: 3.5,
        voicemailDetectionPostSpeechTimeout: 1.75,
      },
      allowedLineTypes: [
        "mobile",
        "voip",
      ],
      targetFilters: {
        match: "any",
        rules: [
          {
            field: "line_type",
            op: "in",
            values: [
              "landline",
              "fixedVoip",
              "nonFixedVoip",
            ],
          },
          {
            field: "carrier_name",
            op: "in",
            values: [
              "Onvoy, LLC - Sinch",
            ],
          },
        ],
      },
      webhooks: [
        {
          triggerStatuses: [
            "COMPLETED",
          ],
          url: "https://example.com/hooks/syllable",
          requestMethod: "POST",
        },
      ],
    },
  });

  console.log(result);
}

run();

curl --request PUT \
  --url https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id} \
  --header 'Content-Type: application/json' \
  --header 'Syllable-API-Key: <api-key>' \
  --data '
{
  "campaign_name": "Outbound Campaign 1",
  "campaign_variables": {
    "key": "value",
    "key2": "value2"
  },
  "caller_id": 19995551234,
  "active_days": "[\"mon\", \"tue\", \"wed\", \"thu\", \"fri\"]",
  "description": "This is a test campaign",
  "mode": "voice",
  "sms_session_ttl": 720,
  "label": "test",
  "labels": [
    "test",
    "demo"
  ],
  "daily_start_time": "09:00:00",
  "daily_end_time": "17:00:00",
  "source": "+19032900844",
  "hourly_rate": 25,
  "max_daily_calls": 2500,
  "retry_count": 1,
  "retry_interval": "30m",
  "voicemail_detection": {
    "voicemail_detection_overall_timeout": 30,
    "voicemail_detection_post_speech_timeout": 1.75,
    "voicemail_detection_pre_speech_timeout": 3.5
  },
  "allowed_line_types": [
    "mobile",
    "voip"
  ],
  "include_unknown_line_types": true,
  "target_filters": {
    "match": "any",
    "on_unknown": "include",
    "rules": [
      {
        "field": "line_type",
        "op": "in",
        "values": [
          "landline",
          "fixedVoip",
          "nonFixedVoip"
        ]
      },
      {
        "field": "carrier_name",
        "op": "in",
        "values": [
          "Onvoy, LLC - Sinch"
        ]
      }
    ]
  },
  "webhooks": {
    "request_method": "POST",
    "trigger_statuses": [
      "COMPLETED"
    ],
    "url": "https://example.com/hooks/syllable"
  }
}
'

const options = {
  method: 'PUT',
  headers: {'Syllable-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    campaign_name: 'Outbound Campaign 1',
    campaign_variables: {key: 'value', key2: 'value2'},
    caller_id: 19995551234,
    active_days: '["mon", "tue", "wed", "thu", "fri"]',
    description: 'This is a test campaign',
    mode: 'voice',
    sms_session_ttl: 720,
    label: 'test',
    labels: ['test', 'demo'],
    daily_start_time: '09:00:00',
    daily_end_time: '17:00:00',
    source: '+19032900844',
    hourly_rate: 25,
    max_daily_calls: 2500,
    retry_count: 1,
    retry_interval: '30m',
    voicemail_detection: {
      voicemail_detection_overall_timeout: 30,
      voicemail_detection_post_speech_timeout: 1.75,
      voicemail_detection_pre_speech_timeout: 3.5
    },
    allowed_line_types: ['mobile', 'voip'],
    include_unknown_line_types: true,
    target_filters: {
      match: 'any',
      on_unknown: 'include',
      rules: [
        {
          field: 'line_type',
          op: 'in',
          values: ['landline', 'fixedVoip', 'nonFixedVoip']
        },
        {field: 'carrier_name', op: 'in', values: ['Onvoy, LLC - Sinch']}
      ]
    },
    webhooks: {
      request_method: 'POST',
      trigger_statuses: ['COMPLETED'],
      url: 'https://example.com/hooks/syllable'
    }
  })
};

fetch('https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'campaign_name' => 'Outbound Campaign 1',
    'campaign_variables' => [
        'key' => 'value',
        'key2' => 'value2'
    ],
    'caller_id' => 19995551234,
    'active_days' => '["mon", "tue", "wed", "thu", "fri"]',
    'description' => 'This is a test campaign',
    'mode' => 'voice',
    'sms_session_ttl' => 720,
    'label' => 'test',
    'labels' => [
        'test',
        'demo'
    ],
    'daily_start_time' => '09:00:00',
    'daily_end_time' => '17:00:00',
    'source' => '+19032900844',
    'hourly_rate' => 25,
    'max_daily_calls' => 2500,
    'retry_count' => 1,
    'retry_interval' => '30m',
    'voicemail_detection' => [
        'voicemail_detection_overall_timeout' => 30,
        'voicemail_detection_post_speech_timeout' => 1.75,
        'voicemail_detection_pre_speech_timeout' => 3.5
    ],
    'allowed_line_types' => [
        'mobile',
        'voip'
    ],
    'include_unknown_line_types' => true,
    'target_filters' => [
        'match' => 'any',
        'on_unknown' => 'include',
        'rules' => [
                [
                                'field' => 'line_type',
                                'op' => 'in',
                                'values' => [
                                                                'landline',
                                                                'fixedVoip',
                                                                'nonFixedVoip'
                                ]
                ],
                [
                                'field' => 'carrier_name',
                                'op' => 'in',
                                'values' => [
                                                                'Onvoy, LLC - Sinch'
                                ]
                ]
        ]
    ],
    'webhooks' => [
        'request_method' => 'POST',
        'trigger_statuses' => [
                'COMPLETED'
        ],
        'url' => 'https://example.com/hooks/syllable'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "Syllable-API-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}"

	payload := strings.NewReader("{\n  \"campaign_name\": \"Outbound Campaign 1\",\n  \"campaign_variables\": {\n    \"key\": \"value\",\n    \"key2\": \"value2\"\n  },\n  \"caller_id\": 19995551234,\n  \"active_days\": \"[\\\"mon\\\", \\\"tue\\\", \\\"wed\\\", \\\"thu\\\", \\\"fri\\\"]\",\n  \"description\": \"This is a test campaign\",\n  \"mode\": \"voice\",\n  \"sms_session_ttl\": 720,\n  \"label\": \"test\",\n  \"labels\": [\n    \"test\",\n    \"demo\"\n  ],\n  \"daily_start_time\": \"09:00:00\",\n  \"daily_end_time\": \"17:00:00\",\n  \"source\": \"+19032900844\",\n  \"hourly_rate\": 25,\n  \"max_daily_calls\": 2500,\n  \"retry_count\": 1,\n  \"retry_interval\": \"30m\",\n  \"voicemail_detection\": {\n    \"voicemail_detection_overall_timeout\": 30,\n    \"voicemail_detection_post_speech_timeout\": 1.75,\n    \"voicemail_detection_pre_speech_timeout\": 3.5\n  },\n  \"allowed_line_types\": [\n    \"mobile\",\n    \"voip\"\n  ],\n  \"include_unknown_line_types\": true,\n  \"target_filters\": {\n    \"match\": \"any\",\n    \"on_unknown\": \"include\",\n    \"rules\": [\n      {\n        \"field\": \"line_type\",\n        \"op\": \"in\",\n        \"values\": [\n          \"landline\",\n          \"fixedVoip\",\n          \"nonFixedVoip\"\n        ]\n      },\n      {\n        \"field\": \"carrier_name\",\n        \"op\": \"in\",\n        \"values\": [\n          \"Onvoy, LLC - Sinch\"\n        ]\n      }\n    ]\n  },\n  \"webhooks\": {\n    \"request_method\": \"POST\",\n    \"trigger_statuses\": [\n      \"COMPLETED\"\n    ],\n    \"url\": \"https://example.com/hooks/syllable\"\n  }\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("Syllable-API-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.put("https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}")
  .header("Syllable-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"campaign_name\": \"Outbound Campaign 1\",\n  \"campaign_variables\": {\n    \"key\": \"value\",\n    \"key2\": \"value2\"\n  },\n  \"caller_id\": 19995551234,\n  \"active_days\": \"[\\\"mon\\\", \\\"tue\\\", \\\"wed\\\", \\\"thu\\\", \\\"fri\\\"]\",\n  \"description\": \"This is a test campaign\",\n  \"mode\": \"voice\",\n  \"sms_session_ttl\": 720,\n  \"label\": \"test\",\n  \"labels\": [\n    \"test\",\n    \"demo\"\n  ],\n  \"daily_start_time\": \"09:00:00\",\n  \"daily_end_time\": \"17:00:00\",\n  \"source\": \"+19032900844\",\n  \"hourly_rate\": 25,\n  \"max_daily_calls\": 2500,\n  \"retry_count\": 1,\n  \"retry_interval\": \"30m\",\n  \"voicemail_detection\": {\n    \"voicemail_detection_overall_timeout\": 30,\n    \"voicemail_detection_post_speech_timeout\": 1.75,\n    \"voicemail_detection_pre_speech_timeout\": 3.5\n  },\n  \"allowed_line_types\": [\n    \"mobile\",\n    \"voip\"\n  ],\n  \"include_unknown_line_types\": true,\n  \"target_filters\": {\n    \"match\": \"any\",\n    \"on_unknown\": \"include\",\n    \"rules\": [\n      {\n        \"field\": \"line_type\",\n        \"op\": \"in\",\n        \"values\": [\n          \"landline\",\n          \"fixedVoip\",\n          \"nonFixedVoip\"\n        ]\n      },\n      {\n        \"field\": \"carrier_name\",\n        \"op\": \"in\",\n        \"values\": [\n          \"Onvoy, LLC - Sinch\"\n        ]\n      }\n    ]\n  },\n  \"webhooks\": {\n    \"request_method\": \"POST\",\n    \"trigger_statuses\": [\n      \"COMPLETED\"\n    ],\n    \"url\": \"https://example.com/hooks/syllable\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.syllable.cloud/api/v1/outbound/campaigns/{campaign_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Syllable-API-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"campaign_name\": \"Outbound Campaign 1\",\n  \"campaign_variables\": {\n    \"key\": \"value\",\n    \"key2\": \"value2\"\n  },\n  \"caller_id\": 19995551234,\n  \"active_days\": \"[\\\"mon\\\", \\\"tue\\\", \\\"wed\\\", \\\"thu\\\", \\\"fri\\\"]\",\n  \"description\": \"This is a test campaign\",\n  \"mode\": \"voice\",\n  \"sms_session_ttl\": 720,\n  \"label\": \"test\",\n  \"labels\": [\n    \"test\",\n    \"demo\"\n  ],\n  \"daily_start_time\": \"09:00:00\",\n  \"daily_end_time\": \"17:00:00\",\n  \"source\": \"+19032900844\",\n  \"hourly_rate\": 25,\n  \"max_daily_calls\": 2500,\n  \"retry_count\": 1,\n  \"retry_interval\": \"30m\",\n  \"voicemail_detection\": {\n    \"voicemail_detection_overall_timeout\": 30,\n    \"voicemail_detection_post_speech_timeout\": 1.75,\n    \"voicemail_detection_pre_speech_timeout\": 3.5\n  },\n  \"allowed_line_types\": [\n    \"mobile\",\n    \"voip\"\n  ],\n  \"include_unknown_line_types\": true,\n  \"target_filters\": {\n    \"match\": \"any\",\n    \"on_unknown\": \"include\",\n    \"rules\": [\n      {\n        \"field\": \"line_type\",\n        \"op\": \"in\",\n        \"values\": [\n          \"landline\",\n          \"fixedVoip\",\n          \"nonFixedVoip\"\n        ]\n      },\n      {\n        \"field\": \"carrier_name\",\n        \"op\": \"in\",\n        \"values\": [\n          \"Onvoy, LLC - Sinch\"\n        ]\n      }\n    ]\n  },\n  \"webhooks\": {\n    \"request_method\": \"POST\",\n    \"trigger_statuses\": [\n      \"COMPLETED\"\n    ],\n    \"url\": \"https://example.com/hooks/syllable\"\n  }\n}"

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

{
  "campaign_name": "Outbound Campaign 1",
  "campaign_variables": {
    "key": "value",
    "key2": "value2"
  },
  "caller_id": 19995551234,
  "active_days": "[\"mon\", \"tue\", \"wed\", \"thu\", \"fri\"]",
  "id": 1,
  "last_updated_by": "user@email.com",
  "description": "This is a test campaign",
  "mode": "voice",
  "sms_session_ttl": 720,
  "label": "test",
  "labels": [
    "test",
    "demo"
  ],
  "daily_start_time": "09:00:00",
  "daily_end_time": "17:00:00",
  "source": "+19032900844",
  "hourly_rate": 25,
  "max_daily_calls": 2500,
  "retry_count": 1,
  "retry_interval": "30m",
  "voicemail_detection": {
    "voicemail_detection_overall_timeout": 30,
    "voicemail_detection_post_speech_timeout": 1.75,
    "voicemail_detection_pre_speech_timeout": 3.5
  },
  "allowed_line_types": [
    "mobile",
    "voip"
  ],
  "include_unknown_line_types": true,
  "target_filters": {
    "match": "any",
    "on_unknown": "include",
    "rules": [
      {
        "field": "line_type",
        "op": "in",
        "values": [
          "landline",
          "fixedVoip",
          "nonFixedVoip"
        ]
      },
      {
        "field": "carrier_name",
        "op": "in",
        "values": [
          "Onvoy, LLC - Sinch"
        ]
      }
    ]
  },
  "agent_id": "agent_id",
  "created_at": "2026-08-20T00:00:00Z",
  "updated_at": "2026-08-20T00:00:00Z",
  "webhooks": {
    "id": 1,
    "request_method": "POST",
    "trigger_statuses": [
      "COMPLETED"
    ],
    "url": "https://example.com/hooks/syllable"
  }
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

Authorizations

Syllable-API-Key

string

header

required

Path Parameters

campaign_id

integer

required

Body

application/json

campaign_name

string

required

Human readable name of campaign

Example:

"Outbound Campaign 1"

campaign_variables

Campaign Variables · object

required

Variables for campaign

Show child attributes

Example:

{ "key": "value", "key2": "value2" }

caller_id

string | null

required

Caller ID for call

Example:

19995551234

active_days

enum<string>[]

required

Days of the week when campaign is active

Enum representing days of the week.

Available options:

mon,

tue,

wed,

thu,

fri,

sat,

sun

Example:

"[\"mon\", \"tue\", \"wed\", \"thu\", \"fri\"]"

description

string | null

Description of campaign

Example:

"This is a test campaign"

mode

string | null

Mode of the campaign (e.g. voice, sms, email)

Example:

"voice"

sms_session_ttl

integer | null

Time to live for SMS session in minutes

Example:

720

label

string | null

deprecated

Label for campaign (DEPRECATED - use labels instead)

Example:

"test"

labels

string[] | null

Labels for campaign

Example:

["test", "demo"]

daily_start_time

string | null

Start time of campaign each day

Example:

"09:00:00"

daily_end_time

string | null

End time of campaign each day

Example:

"17:00:00"

source

string | null

Source phone number, email, or SMS number

Example:

"+19032900844"

hourly_rate

integer

default:1

Target number of outreach calls per hour

Required range: 1 <= x <= 3600

Example:

25

max_daily_calls

integer | null

Maximum number of outreach calls per day

Example:

2500

retry_count

integer

default:0

Number of retries per target

Example:

1

retry_interval

string | null

How long to wait before retrying

Example:

"30m"

voicemail_detection

VoicemailDetectionConfig · object | null

Config for voicemail detection for voice campaigns. Set to None to disable.

Show child attributes

Example:

{
  "voicemail_detection_overall_timeout": 30,
  "voicemail_detection_post_speech_timeout": 1.75,
  "voicemail_detection_pre_speech_timeout": 3.5
}

allowed_line_types

enum<string>[] | null

Line-type buckets this campaign is allowed to dial. Empty or omitted means no filter (all line types are dialed).

Friendly line-type buckets a campaign can be restricted to dial.

These map to raw Twilio Lookup v2 line types via lib.twilio.line_type_lookup.LINE_TYPE_BUCKETS.

Available options:

mobile,

landline,

voip

Example:

["mobile", "voip"]

include_unknown_line_types

boolean

default:true

When a line-type filter is active, whether to also dial numbers whose line type is unknown or could not be classified. Has no effect when allowed_line_types is empty.

Example:

true

target_filters

TargetFilters · object | null

Generic target filter (a flat rule list over request enrichment attributes such as line_type, carrier_name, mcc, mnc). When set, takes precedence over allowed_line_types / include_unknown_line_types. Omitted or null means those legacy fields are used instead.

Show child attributes

Example:

{
  "match": "any",
  "on_unknown": "include",
  "rules": [
    {
      "field": "line_type",
      "op": "in",
      "values": ["landline", "fixedVoip", "nonFixedVoip"]
    },
    {
      "field": "carrier_name",
      "op": "in",
      "values": ["Onvoy, LLC - Sinch"]
    }
  ]
}

webhooks

OutboundCampaignWebhookInput · object[]

Webhooks for campaign

Show child attributes

Example:

{
  "request_method": "POST",
  "trigger_statuses": ["COMPLETED"],
  "url": "https://example.com/hooks/syllable"
}

Response

Successful Response

campaign_name

string

required

Human readable name of campaign

Example:

"Outbound Campaign 1"

campaign_variables

Campaign Variables · object

required

Variables for campaign

Show child attributes

Example:

{ "key": "value", "key2": "value2" }

caller_id

string | null

required

Caller ID for call

Example:

19995551234

active_days

enum<string>[]

required

Days of the week when campaign is active

Enum representing days of the week.

Available options:

mon,

tue,

wed,

thu,

fri,

sat,

sun

Example:

"[\"mon\", \"tue\", \"wed\", \"thu\", \"fri\"]"

integer

required

Unique ID for campaign

Example:

1

last_updated_by

string

required

Email of user who last updated campaign

Example:

"user@email.com"

description

string | null

Description of campaign

Example:

"This is a test campaign"

mode

string | null

Mode of the campaign (e.g. voice, sms, email)

Example:

"voice"

sms_session_ttl

integer | null

Time to live for SMS session in minutes

Example:

720

label

string | null

deprecated

Label for campaign (DEPRECATED - use labels instead)

Example:

"test"

labels

string[] | null

Labels for campaign

Example:

["test", "demo"]

daily_start_time

string | null

Start time of campaign each day

Example:

"09:00:00"

daily_end_time

string | null

End time of campaign each day

Example:

"17:00:00"

source

string | null

Source phone number, email, or SMS number

Example:

"+19032900844"

hourly_rate

integer

default:1

Target number of outreach calls per hour

Required range: 1 <= x <= 3600

Example:

25

max_daily_calls

integer | null

Maximum number of outreach calls per day

Example:

2500

retry_count

integer

default:0

Number of retries per target

Example:

1

retry_interval

string | null

How long to wait before retrying

Example:

"30m"

voicemail_detection

VoicemailDetectionConfig · object | null

Config for voicemail detection for voice campaigns. Set to None to disable.

Show child attributes

Example:

{
  "voicemail_detection_overall_timeout": 30,
  "voicemail_detection_post_speech_timeout": 1.75,
  "voicemail_detection_pre_speech_timeout": 3.5
}

allowed_line_types

enum<string>[] | null

Line-type buckets this campaign is allowed to dial. Empty or omitted means no filter (all line types are dialed).

Friendly line-type buckets a campaign can be restricted to dial.

These map to raw Twilio Lookup v2 line types via lib.twilio.line_type_lookup.LINE_TYPE_BUCKETS.

Available options:

mobile,

landline,

voip

Example:

["mobile", "voip"]

include_unknown_line_types

boolean

default:true

When a line-type filter is active, whether to also dial numbers whose line type is unknown or could not be classified. Has no effect when allowed_line_types is empty.

Example:

true

target_filters

TargetFilters · object | null

Show child attributes

Example:

{
  "match": "any",
  "on_unknown": "include",
  "rules": [
    {
      "field": "line_type",
      "op": "in",
      "values": ["landline", "fixedVoip", "nonFixedVoip"]
    },
    {
      "field": "carrier_name",
      "op": "in",
      "values": ["Onvoy, LLC - Sinch"]
    }
  ]
}

agent_id

integer | null

ID of agent assigned to campaign

Example:

"agent_id"

created_at

string<date-time>

Timestamp of campaign creation

Example:

"2026-08-20T00:00:00Z"

updated_at

string<date-time>

Timestamp of campaign update

Example:

"2026-08-20T00:00:00Z"

webhooks

OutboundCampaignWebhookResponse · object[] | null

Webhooks for campaign

Show child attributes

Example:

{
  "id": 1,
  "request_method": "POST",
  "trigger_statuses": ["COMPLETED"],
  "url": "https://example.com/hooks/syllable"
}