ActiveCampaign

Access the ActiveCampaign API with managed OAuth authentication. Manage contacts, deals, tags, lists, automations, and email campaigns.

Quick Start

# List all contacts
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/active-campaign/api/3/contacts')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://api.maton.ai/active-campaign/{native-api-path}

Maton proxies requests to {account}.api-us1.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key

Connection Management

Manage your ActiveCampaign OAuth connections at https://api.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections?app=active-campaign&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'active-campaign'}).encode()
req = urllib.request.Request('https://api.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "{connection_id}",
    "status": "ACTIVE",
    "creation_time": "2026-02-09T20:03:16.595823Z",
    "last_updated_time": "2026-02-09T20:04:09.550767Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "active-campaign",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple ActiveCampaign connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/active-campaign/api/3/contacts')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '{connection_id}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If you have multiple connections, always include this header to ensure requests go to the intended account.

Security & Permissions

• Access is scoped to contacts, deals, lists, campaigns, automations, tags, users, accounts, custom fields, notes, and webhooks within the connected ActiveCampaign account.
• All write operations require explicit user approval. Before executing any create, update, or delete call, confirm the target resource and intended effect with the user.
• Webhooks send data to external URLs. Creating a webhook causes account event data to be transmitted to the specified destination. Confirm the URL, events, and intent with the user before creating.
• User and account management are administrative operations that affect shared resources and team access. Confirm before modifying.

API Reference

Contacts

List Contacts

GET /active-campaign/api/3/contacts

Query Parameters:

• limit - Number of results (default: 20)
• offset - Starting index
• search - Search by email
• filters[email] - Filter by email
• filters[listid] - Filter by list ID

Response:

{
  "contacts": [
    {
      "id": "1",
      "email": "user@example.com",
      "firstName": "John",
      "lastName": "Doe",
      "phone": "",
      "cdate": "2026-02-09T14:03:19-06:00",
      "udate": "2026-02-09T14:03:19-06:00"
    }
  ],
  "meta": {
    "total": "1"
  }
}

Get Contact

GET /active-campaign/api/3/contacts/{contactId}

Returns contact with related data including lists, tags, deals, and field values.

Create Contact

POST /active-campaign/api/3/contacts
Content-Type: application/json

{
  "contact": {
    "email": "newcontact@example.com",
    "firstName": "John",
    "lastName": "Doe",
    "phone": "555-1234"
  }
}

Response:

{
  "contact": {
    "id": "2",
    "email": "newcontact@example.com",
    "firstName": "John",
    "lastName": "Doe",
    "cdate": "2026-02-09T17:51:39-06:00",
    "udate": "2026-02-09T17:51:39-06:00"
  }
}

Update Contact

PUT /active-campaign/api/3/contacts/{contactId}
Content-Type: application/json

{
  "contact": {
    "firstName": "Updated",
    "lastName": "Name"
  }
}

Delete Contact

DELETE /active-campaign/api/3/contacts/{contactId}

Returns 200 OK on success.

Sync Contact (Create or Update)

POST /active-campaign/api/3/contact/sync
Content-Type: application/json

{
  "contact": {
    "email": "user@example.com",
    "firstName": "Updated Name"
  }
}

Creates the contact if it doesn't exist, updates if it does.

Tags

List Tags

GET /active-campaign/api/3/tags

Response:

{
  "tags": [
    {
      "id": "1",
      "tag": "VIP Customer",
      "tagType": "contact",
      "description": "High-value customers",
      "cdate": "2026-02-09T17:51:39-06:00"
    }
  ],
  "meta": {
    "total": "1"
  }
}

Get Tag

GET /active-campaign/api/3/tags/{tagId}

Create Tag

POST /active-campaign/api/3/tags
Content-Type: application/json

{
  "tag": {
    "tag": "New Tag",
    "tagType": "contact",
    "description": "Tag description"
  }
}

Update Tag

PUT /active-campaign/api/3/tags/{tagId}
Content-Type: application/json

{
  "tag": {
    "tag": "Updated Tag Name"
  }
}

Delete Tag

DELETE /active-campaign/api/3/tags/{tagId}

Contact Tags

Add Tag to Contact

POST /active-campaign/api/3/contactTags
Content-Type: application/json

{
  "contactTag": {
    "contact": "2",
    "tag": "1"
  }
}

Remove Tag from Contact

DELETE /active-campaign/api/3/contactTags/{contactTagId}

Get Contact's Tags

GET /active-campaign/api/3/contacts/{contactId}/contactTags

Lists

List All Lists

GET /active-campaign/api/3/lists

Response:

{
  "lists": [
    {
      "id": "1",
      "stringid": "master-contact-list",
      "name": "Master Contact List",
      "cdate": "2026-02-09T14:03:20-06:00"
    }
  ],
  "meta": {
    "total": "1"
  }
}

Get List

GET /active-campaign/api/3/lists/{listId}

Create List

POST /active-campaign/api/3/lists
Content-Type: application/json

{
  "list": {
    "name": "New List",
    "stringid": "new-list",
    "sender_url": "https://example.com",
    "sender_reminder": "You signed up on our website"
  }
}

Update List

PUT /active-campaign/api/3/lists/{listId}
Content-Type: application/json

{
  "list": {
    "name": "Updated List Name"
  }
}

Delete List

DELETE /active-campaign/api/3/lists/{listId}

Contact Lists

Subscribe Contact to List

POST /active-campaign/api/3/contactLists
Content-Type: application/json

{
  "contactList": {
    "contact": "2",
    "list": "1",
    "status": "1"
  }
}

Status values: 1 = subscribed, 2 = unsubscribed

Deals

List Deals

GET /active-campaign/api/3/deals

Query Parameters:

• search - Search by title, contact, or org
• filters[stage] - Filter by stage ID
• filters[owner] - Filter by owner ID

Response:

{
  "deals": [
    {
      "id": "1",
      "title": "New Deal",
      "value": "10000",
      "currency": "usd",
      "stage": "1",
      "owner": "1"
    }
  ],
  "meta": {
    "total": 0,
    "currencies": []
  }
}

Get Deal

GET /active-campaign/api/3/deals/{dealId}

Create Deal

POST /active-campaign/api/3/deals
Content-Type: application/json

{
  "deal": {
    "title": "New Deal",
    "value": "10000",
    "currency": "usd",
    "contact": "2",
    "stage": "1",
    "owner": "1"
  }
}

Update Deal

PUT /active-campaign/api/3/deals/{dealId}
Content-Type: application/json

{
  "deal": {
    "title": "Updated Deal",
    "value": "15000"
  }
}

Delete Deal

DELETE /active-campaign/api/3/deals/{dealId}

Deal Stages

List Deal Stages

GET /active-campaign/api/3/dealStages

Create Deal Stage

POST /active-campaign/api/3/dealStages
Content-Type: application/json

{
  "dealStage": {
    "title": "New Stage",
    "group": "1",
    "order": "1"
  }
}

Deal Groups (Pipelines)

List Pipelines

GET /active-campaign/api/3/dealGroups

Create Pipeline

POST /active-campaign/api/3/dealGroups
Content-Type: application/json

{
  "dealGroup": {
    "title": "Sales Pipeline",
    "currency": "usd"
  }
}

Automations

List Automations

GET /active-campaign/api/3/automations

Response:

{
  "automations": [
    {
      "id": "1",
      "name": "Welcome Series",
      "cdate": "2026-02-09T14:00:00-06:00",
      "mdate": "2026-02-09T14:00:00-06:00",
      "status": "1"
    }
  ],
  "meta": {
    "total": "1"
  }
}

Get Automation

GET /active-campaign/api/3/automations/{automationId}

Campaigns

List Campaigns

GET /active-campaign/api/3/campaigns

Response:

{
  "campaigns": [
    {
      "id": "1",
      "name": "Newsletter",
      "type": "single",
      "status": "0"
    }
  ],
  "meta": {
    "total": "1"
  }
}

Get Campaign

GET /active-campaign/api/3/campaigns/{campaignId}

Users

List Users

GET /active-campaign/api/3/users

Response:

{
  "users": [
    {
      "id": "1",
      "username": "admin",
      "firstName": "John",
      "lastName": "Doe",
      "email": "admin@example.com"
    }
  ]
}

Get User

GET /active-campaign/api/3/users/{userId}

Accounts

List Accounts

GET /active-campaign/api/3/accounts

Create Account

POST /active-campaign/api/3/accounts
Content-Type: application/json

{
  "account": {
    "name": "Acme Inc"
  }
}

Custom Fields

List Fields

GET /active-campaign/api/3/fields

Create Field

POST /active-campaign/api/3/fields
Content-Type: application/json

{
  "field": {
    "type": "text",
    "title": "Custom Field",
    "descript": "A custom field"
  }
}

Field Values

Update Contact Field Value

PUT /active-campaign/api/3/fieldValues/{fieldValueId}
Content-Type: application/json

{
  "fieldValue": {
    "value": "New Value"
  }
}

Notes

List Notes

GET /active-campaign/api/3/notes

Create Note

POST /active-campaign/api/3/notes
Content-Type: application/json

{
  "note": {
    "note": "This is a note",
    "relid": "2",
    "reltype": "Subscriber"
  }
}

Webhooks

List Webhooks

GET /active-campaign/api/3/webhooks

Create Webhook

POST /active-campaign/api/3/webhooks
Content-Type: application/json

{
  "webhook": {
    "name": "My Webhook",
    "url": "https://example.com/webhook",
    "events": ["subscribe", "unsubscribe"],
    "sources": ["public", "admin"]
  }
}

Pagination

ActiveCampaign uses offset-based pagination:

GET /active-campaign/api/3/contacts?limit=20&offset=0

Parameters:

• limit - Results per page (default: 20)
• offset - Starting index

Response includes meta:

{
  "contacts": [...],
  "meta": {
    "total": "150"
  }
}

For large datasets, use orders[id]=ASC and id_greater parameter for better performance:

GET /active-campaign/api/3/contacts?orders[id]=ASC&id_greater=100

Code Examples

JavaScript

const response = await fetch(
  'https://api.maton.ai/active-campaign/api/3/contacts',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
const data = await response.json();
console.log(data.contacts);

Python

import os
import requests

response = requests.get(
    'https://api.maton.ai/active-campaign/api/3/contacts',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
)
data = response.json()
print(data['contacts'])

Python (Create Contact with Tag)

import os
import requests

headers = {
    'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
    'Content-Type': 'application/json'
}

# Create contact
contact_response = requests.post(
    'https://api.maton.ai/active-campaign/api/3/contacts',
    headers=headers,
    json={
        'contact': {
            'email': 'newuser@example.com',
            'firstName': 'New',
            'lastName': 'User'
        }
    }
)
contact = contact_response.json()['contact']
print(f"Created contact ID: {contact['id']}")

# Add tag to contact
tag_response = requests.post(
    'https://api.maton.ai/active-campaign/api/3/contactTags',
    headers=headers,
    json={
        'contactTag': {
            'contact': contact['id'],
            'tag': '1'
        }
    }
)
print("Tag added to contact")

Notes

• All endpoints require the /api/3/ prefix
• Request bodies use singular resource names wrapped in an object (e.g., {"contact": {...}})
• IDs are returned as strings
• Timestamps are in ISO 8601 format with timezone
• Rate limit: 5 requests per second per account
• DELETE operations return 200 OK (not 204)
• IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

Error responses include details:

{
  "errors": [
    {
      "title": "The contact email is required",
      "source": {
        "pointer": "/data/attributes/email"
      }
    }
  ]
}

Troubleshooting: Invalid API Key

When you receive an "Invalid API key" error, ALWAYS follow these steps before concluding there is an issue:

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

1. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Resources

• ActiveCampaign API Overview
• ActiveCampaign Developer Portal
• API Base URL
• Contacts API
• Tags API
• Deals API