[SOLVED] Mattermost (team chat) - how to post to a channel via curl?

Mattermost (team chat) - how to post to a channel via curl?

We are using mattermost as an internally hosted alternative to slack.

How can I write to a channel in mattermost, for example by a script, using curl?

I need to know:

how to get an "integration key" from mattermost
format of the curl command

An example of my script that works with slack:

SLACK_URL='https://hooks.slack.com/services/my-long-integration-key'
message='Project XYZ was released successfully.'

curl -X POST -H "Content-Type: application/json" \
    --data "{ \"channel\": \"#releases\", \"username\": \"$me\", \"text\": \"$MESSAGE\" }" \
    $SLACK_URL &> /dev/null

Indeed there is a Mattermost API (equivalent to slack-api) but I am struggling to a good example of what I want to do.

Thanks

Solution

Here's the format, using curl and a json payload:

curl -i -X POST -d 'payload={"text": "Hello, world!", "username":"xxx", "channel":"yyy"}' \
https://mattermost.intern.mycompany.com/hooks/abcdefg1234567