Workflow: Mattermost N8N Automate

{
    "nodes": [
        {
            "name": "n8n Trigger",
            "type": "n8n-nodes-base.n8nTrigger",
            "position": [
                450,
                200
            ],
            "parameters": {
                "events": [
                    "init"
                ]
            },
            "typeVersion": 1
        },
        {
            "name": "Mattermost",
            "type": "n8n-nodes-base.mattermost",
            "position": [
                650,
                200
            ],
            "parameters": {
                "message": "=Your n8n instance started at {{$json[\"timestamp\"]}}",
                "channelId": "toyi3uoycf8rirtm7d5jm15sso",
                "attachments": [],
                "otherOptions": []
            },
            "credentials": {
                "mattermostApi": "Mattermost Credentials"
            },
            "typeVersion": 1
        }
    ],
    "connections": {
        "n8n Trigger": {
            "main": [
                [
                    {
                        "node": "Mattermost",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        }
    }
}