Agent skill

kit

Kit (formerly ConvertKit) API integration with managed OAuth. Manage email subscribers, forms, tags, sequences, broadcasts, and custom fields. Use this skill when users want to manage their email marketing lists, create or update subscribers, manage tags, or work with email sequences and broadcasts. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

View SKILL.md on GitHub Repository
Stars 163
Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/other/kit-ljt-520-openclaw-backup

Metadata

Additional technical details for this skill

author
maton
version
1.0
clawdbot 
{
    "emoji": "\ud83e\udde0",
    "requires": {
        "env": [
            "MATON_API_KEY"
        ]
    }
}

SKILL.md

Kit

Access the Kit (formerly ConvertKit) API with managed OAuth authentication. Manage subscribers, tags, forms, sequences, broadcasts, custom fields, and webhooks.

Quick Start

bash
# List subscribers
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/kit/v4/subscribers?per_page=10')
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/kit/{native-api-path}

Replace {native-api-path} with the actual Kit API endpoint path. The gateway proxies requests to api.kit.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:

bash
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 Kit OAuth connections at https://ctrl.maton.ai.

List Connections

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=kit&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

bash
python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'kit'}).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

bash
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:

json
{
  "connection": {
    "connection_id": "cb2025b3-706f-4b5d-87a5-c6809c0c7ec4",
    "status": "ACTIVE",
    "creation_time": "2026-02-07T00:04:08.476727Z",
    "last_updated_time": "2026-02-07T00:05:58.001964Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "kit",
    "metadata": {}
  }
}

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

Delete Connection

bash
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 Kit connections, specify which one to use with the Maton-Connection header:

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/kit/v4/subscribers')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', 'cb2025b3-706f-4b5d-87a5-c6809c0c7ec4')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

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

API Reference

Subscribers

List Subscribers

bash
GET /kit/v4/subscribers

Query parameters:

  • per_page - Results per page (default: 500, max: 1000)
  • after - Cursor for next page
  • before - Cursor for previous page
  • status - Filter by: active, inactive, bounced, complained, cancelled, or all
  • email_address - Filter by specific email
  • created_after / created_before - Filter by creation date (yyyy-mm-dd)
  • updated_after / updated_before - Filter by update date (yyyy-mm-dd)
  • include_total_count - Include total count (slower)

Response:

json
{
  "subscribers": [
    {
      "id": 3914682852,
      "first_name": "Test User",
      "email_address": "[email protected]",
      "state": "active",
      "created_at": "2026-02-07T00:42:54Z",
      "fields": {"company": null}
    }
  ],
  "pagination": {
    "has_previous_page": false,
    "has_next_page": false,
    "start_cursor": "WzE0OV0=",
    "end_cursor": "WzE0OV0=",
    "per_page": 500
  }
}

Get Subscriber

bash
GET /kit/v4/subscribers/{id}

Create Subscriber

bash
POST /kit/v4/subscribers
Content-Type: application/json

{
  "email_address": "[email protected]",
  "first_name": "John"
}

Update Subscriber

bash
PUT /kit/v4/subscribers/{id}
Content-Type: application/json

{
  "first_name": "Updated Name"
}

Tags

List Tags

bash
GET /kit/v4/tags

Query parameters: per_page, after, before, include_total_count

Create Tag

bash
POST /kit/v4/tags
Content-Type: application/json

{
  "name": "new-tag"
}

Response:

json
{
  "tag": {
    "id": 15690016,
    "name": "new-tag",
    "created_at": "2026-02-07T00:42:53Z"
  }
}

Update Tag

bash
PUT /kit/v4/tags/{id}
Content-Type: application/json

{
  "name": "updated-tag-name"
}

Delete Tag

bash
DELETE /kit/v4/tags/{id}

Returns 204 No Content on success.

Tag a Subscriber

bash
POST /kit/v4/tags/{tag_id}/subscribers
Content-Type: application/json

{
  "email_address": "[email protected]"
}

Remove Tag from Subscriber

bash
DELETE /kit/v4/tags/{tag_id}/subscribers/{subscriber_id}

Returns 204 No Content on success.

List Subscribers with Tag

bash
GET /kit/v4/tags/{tag_id}/subscribers

Forms

List Forms

bash
GET /kit/v4/forms

Query parameters:

  • per_page, after, before, include_total_count
  • status - Filter by: active, archived, trashed, or all
  • type - embed for embedded forms, hosted for landing pages

Response:

json
{
  "forms": [
    {
      "id": 9061198,
      "name": "Creator Profile",
      "created_at": "2026-02-07T00:00:32Z",
      "type": "embed",
      "format": null,
      "embed_js": "https://chris-kim-2.kit.com/c682763b07/index.js",
      "embed_url": "https://chris-kim-2.kit.com/c682763b07",
      "archived": false,
      "uid": "c682763b07"
    }
  ],
  "pagination": {...}
}

Add Subscriber to Form

bash
POST /kit/v4/forms/{form_id}/subscribers
Content-Type: application/json

{
  "email_address": "[email protected]"
}

List Form Subscribers

bash
GET /kit/v4/forms/{form_id}/subscribers

Sequences

List Sequences

bash
GET /kit/v4/sequences

Response:

json
{
  "sequences": [
    {
      "id": 123,
      "name": "Welcome Sequence",
      "hold": false,
      "repeat": false,
      "created_at": "2026-01-01T00:00:00Z"
    }
  ],
  "pagination": {...}
}

Add Subscriber to Sequence

bash
POST /kit/v4/sequences/{sequence_id}/subscribers
Content-Type: application/json

{
  "email_address": "[email protected]"
}

List Sequence Subscribers

bash
GET /kit/v4/sequences/{sequence_id}/subscribers

Broadcasts

List Broadcasts

bash
GET /kit/v4/broadcasts

Query parameters: per_page, after, before, include_total_count

Response:

json
{
  "broadcasts": [
    {
      "id": 123,
      "publication_id": 456,
      "created_at": "2026-02-07T00:00:00Z",
      "subject": "My Broadcast",
      "preview_text": "Preview...",
      "content": "<p>Content</p>",
      "public": false,
      "published_at": null,
      "send_at": null,
      "email_template": {"id": 123, "name": "Text only"}
    }
  ],
  "pagination": {...}
}

Segments

List Segments

bash
GET /kit/v4/segments

Query parameters: per_page, after, before, include_total_count

Custom Fields

List Custom Fields

bash
GET /kit/v4/custom_fields

Response:

json
{
  "custom_fields": [
    {
      "id": 1192946,
      "name": "ck_field_1192946_company",
      "key": "company",
      "label": "Company"
    }
  ],
  "pagination": {...}
}

Create Custom Field

bash
POST /kit/v4/custom_fields
Content-Type: application/json

{
  "label": "Company"
}

Update Custom Field

bash
PUT /kit/v4/custom_fields/{id}
Content-Type: application/json

{
  "label": "Company Name"
}

Delete Custom Field

bash
DELETE /kit/v4/custom_fields/{id}

Returns 204 No Content on success.

Purchases

List Purchases

bash
GET /kit/v4/purchases

Query parameters: per_page, after, before, include_total_count

Email Templates

List Email Templates

bash
GET /kit/v4/email_templates

Response:

json
{
  "email_templates": [
    {
      "id": 4956167,
      "name": "Text only",
      "is_default": true,
      "category": "Classic"
    }
  ],
  "pagination": {...}
}

Webhooks

List Webhooks

bash
GET /kit/v4/webhooks

Create Webhook

bash
POST /kit/v4/webhooks
Content-Type: application/json

{
  "target_url": "https://example.com/webhook",
  "event": {"name": "subscriber.subscriber_activate"}
}

Response:

json
{
  "webhook": {
    "id": 5291560,
    "account_id": 2596262,
    "event": {
      "name": "subscriber_activate",
      "initiator_value": null
    },
    "target_url": "https://example.com/webhook"
  }
}

Delete Webhook

bash
DELETE /kit/v4/webhooks/{id}

Returns 204 No Content on success.

Pagination

Kit uses cursor-based pagination. Use after and before query parameters with cursor values from the response.

bash
GET /kit/v4/subscribers?per_page=100&after=WzE0OV0=

Response includes pagination info:

json
{
  "subscribers": [...],
  "pagination": {
    "has_previous_page": false,
    "has_next_page": true,
    "start_cursor": "WzE0OV0=",
    "end_cursor": "WzI0OV0=",
    "per_page": 100
  }
}

Code Examples

JavaScript

javascript
const response = await fetch(
  'https://gateway.maton.ai/kit/v4/subscribers?per_page=10',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
const data = await response.json();

Python

python
import os
import requests

response = requests.get(
    'https://gateway.maton.ai/kit/v4/subscribers',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'},
    params={'per_page': 10}
)
data = response.json()

Notes

  • Kit API uses V4 (V3 is deprecated)
  • Subscriber IDs are integers
  • Custom field keys are auto-generated from labels
  • Bulk operations (>100 items) are processed asynchronously
  • Delete operations return 204 No Content with empty body
  • 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 Kit connection
401 Invalid or missing Maton API key
403 Insufficient permissions (check OAuth scopes)
404 Resource not found
429 Rate limited
4xx/5xx Passthrough error from Kit API

Troubleshooting: API Key Issues

  1. Check that the MATON_API_KEY environment variable is set:
bash
echo $MATON_API_KEY
  1. Verify the API key is valid by listing connections:
bash
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

  1. Ensure your URL path starts with kit. For example:
  • Correct: https://gateway.maton.ai/kit/v4/subscribers
  • Incorrect: https://gateway.maton.ai/v4/subscribers

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