Systeme.io

Access the Systeme.io API with managed OAuth authentication. Manage contacts, tags, courses, communities, and subscriptions.

Quick Start

# List contacts
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/systeme/api/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://gateway.maton.ai/systeme/{native-api-path}

Replace

{native-api-path}

with the actual Systeme.io API endpoint path. The gateway proxies requests to

api.systeme.io

and automatically injects your API key.

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

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

Connection Management

Manage your Systeme.io connections at

https://ctrl.maton.ai

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=systeme&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': 'systeme'}).encode()
req = urllib.request.Request('https://ctrl.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://ctrl.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": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "systeme",
    "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://ctrl.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 Systeme.io connections, specify which one to use with the

Maton-Connection

header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/systeme/api/contacts')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '21fd90f9-5935-43cd-b6c8-bde9d915ca80')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

Contact Operations

List Contacts

GET /systeme/api/contacts

Query Parameters:

```
limit
```
- Number of items per page (10-100, optional)
```
startingAfter
```
- ID of last received item for pagination (optional)
```
order
```
- Sort order:
```
asc
```
or
```
desc
```
(default:
```
desc
```
, optional)

Get Contact

GET /systeme/api/contacts/{id}

Create Contact

POST /systeme/api/contacts
Content-Type: application/json

{
"email": "john@example.com",
"firstName": "John",
"lastName": "Doe",
"phoneNumber": "+1234567890",
"locale": "en",
"fields": [
{
"slug": "custom_field_slug",
"value": "custom value"
}
]
}

Update Contact

PATCH /systeme/api/contacts/{id}
Content-Type: application/merge-patch+json
{
"firstName": "Jane",
"lastName": "Smith"
}

Delete Contact

DELETE /systeme/api/contacts/{id}

Tag Operations

List Tags

GET /systeme/api/tags

Get Tag

GET /systeme/api/tags/{id}

Create Tag

POST /systeme/api/tags
Content-Type: application/json

{
"name": "VIP Customer"
}

Update Tag

PUT /systeme/api/tags/{id}
Content-Type: application/json
{
"name": "Premium Customer"
}

Delete Tag

DELETE /systeme/api/tags/{id}

Contact Tag Operations

Assign Tag to Contact

POST /systeme/api/contacts/{id}/tags
Content-Type: application/json
{
"tagId": 12345
}

Remove Tag from Contact

DELETE /systeme/api/contacts/{id}/tags/{tagId}

Contact Field Operations

List Contact Fields

GET /systeme/api/contact_fields

Create Contact Field

POST /systeme/api/contact_fields
Content-Type: application/json

{
"name": "Company Name",
"slug": "company_name"
}

Update Contact Field

PATCH /systeme/api/contact_fields/{slug}
Content-Type: application/merge-patch+json
{
"name": "Organization Name"
}

Delete Contact Field

DELETE /systeme/api/contact_fields/{slug}

Course Operations

List Courses

GET /systeme/api/school/courses

List Enrollments

GET /systeme/api/school/enrollments

Create Enrollment

POST /systeme/api/school/courses/{courseId}/enrollments
Content-Type: application/json
{
"contactId": 12345,
"accessType": "full_access"
}

Required Fields:

```
contactId
```
- The ID of the contact to enroll

accessType

- Access type:

full_access

partial_access

, or

dripping_content

Note: If

accessType

partial_access

, you must also provide a

modules

array with module IDs.

Delete Enrollment

DELETE /systeme/api/school/enrollments/{id}

Community Operations

List Communities

GET /systeme/api/community/communities

List Memberships

GET /systeme/api/community/memberships

Create Membership

POST /systeme/api/community/communities/{communityId}/memberships
Content-Type: application/json
{
"contactId": 12345
}

Delete Membership

DELETE /systeme/api/community/memberships/{id}

Subscription Operations

List Subscriptions

GET /systeme/api/payment/subscriptions

Cancel Subscription

POST /systeme/api/payment/subscriptions/{id}/cancel

Pagination

Systeme.io uses cursor-based pagination with the following parameters:

GET /systeme/api/contacts?limit=50&startingAfter=12345&order=asc

Parameters:

```
limit
```
- Number of items per page (10-100)
```
startingAfter
```
- ID of the last item from the previous page
```
order
```
- Sort order:
```
asc
```
or
```
desc
```
(default:
```
desc
```
)

Response:

{
  "items": [...],
  "hasMore": true
}

When

hasMore

true

, use the ID of the last item in

items

startingAfter

to get the next page.

Code Examples

JavaScript

const response = await fetch(
  'https://gateway.maton.ai/systeme/api/contacts',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
const data = await response.json();

Python

import os
import requests
response = requests.get(
'https://gateway.maton.ai/systeme/api/contacts&#x27;,
headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
)
data = response.json()

Create Contact with Tag

import os
import requests
Create contact
contact = requests.post(
'https://gateway.maton.ai/systeme/api/contacts&#x27;,
headers={
'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
'Content-Type': 'application/json'
},
json={
'email': 'new@example.com',
'firstName': 'New',
'lastName': 'Contact'
}
).json()
Assign tag
requests.post(
f'https://gateway.maton.ai/systeme/api/contacts/{contact[&quot;id&quot;]}/tags&#x27;,
headers={
'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
'Content-Type': 'application/json'
},
json={'tagId': 12345}
)

Notes

Systeme.io uses API key authentication (passed as
```
X-API-Key
```
header natively)
The gateway automatically handles auth header transformation
Use
```
application/merge-patch+json
```
content type for PATCH requests
Contact, tag, course, and enrollment IDs are numeric integers
Rate limits are enforced via
```
X-RateLimit-*
```
headers
Systeme.io validates email domains - only real email addresses with valid MX records are accepted
The subscriptions endpoint (
```
/api/payment/subscriptions
```
) may return 404 if payment features are not configured
IMPORTANT: When using curl commands, use
```
curl -g
```
when URLs contain brackets to disable glob parsing
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

Status	Meaning
400	Missing Systeme.io connection or bad request
401	Invalid or missing Maton API key
429	Rate limited (check `Retry-After` header)
4xx/5xx	Passthrough error from Systeme.io API

Troubleshooting: API Key Issues

Check that the
```
MATON_API_KEY
```
environment variable is set:

echo $MATON_API_KEY

Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.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

Troubleshooting: Invalid App Name

Ensure your URL path starts with
```
systeme
```
. For example:

Correct:

https://gateway.maton.ai/systeme/api/contacts

Incorrect:
```
https://gateway.maton.ai/api/contacts
```

Systeme.io

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Quick Start

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Systeme.io

Quick Start

Base URL

Authentication

Getting Your API Key

Connection Management

List Connections

Create Connection

Get Connection

Delete Connection

Specifying Connection

API Reference

Contact Operations

List Contacts

Get Contact

Create Contact

Update Contact

Delete Contact

Tag Operations

List Tags

Get Tag

Create Tag

Update Tag

Delete Tag

Contact Tag Operations

Assign Tag to Contact

Remove Tag from Contact

Contact Field Operations

List Contact Fields

Create Contact Field

Update Contact Field

Delete Contact Field

Course Operations

List Courses

List Enrollments

Create Enrollment

Delete Enrollment

Community Operations

List Communities

List Memberships

Create Membership

Delete Membership

Subscription Operations

List Subscriptions

Cancel Subscription

Pagination

Code Examples

JavaScript

Python

Create Contact with Tag

Create contact

Assign tag

Notes

Error Handling

Troubleshooting: API Key Issues

Troubleshooting: Invalid App Name

Resources

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README

MCP Apps Builder

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