ms teams incoming webhook

• text

• summary

image

{
    "@type": "MessageCard",
    "text": "Here are test images",
    "sections": [
        {
            "images": [
                {
                    "image": "data:image/png;base64,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"
                }
            ]
        }
    ]
}

simple

{
    "@type": "MessageCard",
    "summary": "sum",
    "text": "text"
}

action

{
    "@type": "MessageCard",
    "@context": "http://schema.org/extensions",
    "summary": "Larry Bryant created a new task",
    "potentialAction": [{
        "@type": "ActionCard",
        "name": "Add a comment",
        "inputs": [{
            "@type": "TextInput",
            "id": "comment",
            "isMultiline": false,
            "title": "Add a comment here for this task"
        }],
        "actions": [{
            "@type": "HttpPOST",
            "name": "Add comment",
            "target": "http://..."
        }]
    }, {
        "@type": "ActionCard",
        "name": "Set due date",
        "inputs": [{
            "@type": "DateInput",
            "id": "dueDate",
            "title": "Enter a due date for this task"
        }],
        "actions": [{
            "@type": "HttpPOST",
            "name": "Save",
            "target": "http://..."
        }]
    }, {
        "@type": "ActionCard",
        "name": "Change status",
        "inputs": [{
            "@type": "MultichoiceInput",
            "id": "list",
            "title": "Select a status",
            "isMultiSelect": "false",
            "choices": [{
                "display": "In Progress",
                "value": "1"
            }, {
                "display": "Active",
                "value": "2"
            }, {
                "display": "Closed",
                "value": "3"
            }]
        }],
        "actions": [{
            "@type": "HttpPOST",
            "name": "Save",
            "target": "http://..."
        }]
    }]
}

theme

{
    "@type": "MessageCard",
    "@context": "http://schema.org/extensions",
    "themeColor": "0076D7",
    "summary": "Larry Bryant created a new task",
    "sections": []
}

Sending messages to Connectors and Webhooks - Teams

To send a message through your Office 365 Connector or incoming webhook, you post a JSON payload to the webhook URL. Typically this payload will be in the form of an Office 365 Connector Card. You can also use this JSON to create cards containing rich inputs, such as text entry, multi-select, or picking a date and time.

https://docs.microsoft.com/en-us/microsoftteams/platform/webhooks-and-connectors/how-to/connectors-using

Teams: Invoke-Webrequest sending base64 string (png) to Teams

I am trying to send a base64-string which is a png to our Teams-channel which have an "Incoming Webhook" setup. The message is sent to the channel but no image is displayed and when I searched for this it seems that I can't send an image or any other type of attachment as a base64-string to Teams? Extremely new to json and consuming / using rest api in general.

https://stackoverflow.com/questions/56853198/teams-invoke-webrequest-sending-base64-string-png-to-teams