• Python (2/3)
• Mattermost webhook. (Go Here to create guide.)
• Create a python file from config.py.sample as config.py
• Change information based on yours on config.py
• Configure JIRA Web hook (Configure the webhook in your JIRA project) by following this link

• Run pip install -r requirements.txt
• Then on your project directory run python app.py

Follow flask reference

N.B: For JIRA webhook you need to set a valid host/endpoint