Classify and route DevOps chat requests with Mattermost, OpenRouter and Google Calendar

Automatically classify and route DevOps requests from your team chat using LLM + on-call calendar lookup.

What it does

This workflow turns your Mattermost channel into a smart DevOps intake system. When someone mentions @devops-duty, the workflow:

1. Receives the message via Mattermost outgoing webhook
2. Classifies the request into one of 8 categories using an LLM
3. Looks up the current on-call engineer from Google Calendar
4. Routes the request through a Switch node based on category
5. Acknowledges in a Mattermost thread with the classification result

Categories

• create_resource - Provision new databases, secrets, services, DNS records
• incident - Something is broken — production or staging issues
• question - Information requests, status checks, clarifications
• ci_cd_error - Build failures, deployment issues, GitHub Actions problems
• limits - Billing limits, quotas exceeded
• change_request - Modify existing infrastructure or configuration
• ``code_approve` - Code review and merge request approvals
• other - Anything that doesn't fit above

Extending

Each Switch output is an independent branch — connect sub-workflows or additional nodes per category. For example:

incident → trigger an AI investigation sub-workflow with MCP tools (Kubernetes, Grafana, etc.)
create_resource → run a provisioning playbook
ci_cd_error → fetch GitHub Actions logs and analyze failures