Design an AI Agent Workflow

Design an AI agent workflow for: [BUSINESS PROCESS]

Tools available: [e.g. Zapier, n8n, ChatGPT API, Slack]
Trigger: [what starts the workflow]
Success metric: [how we measure it]

Deliver:
1. Step-by-step flow diagram (text/mermaid)
2. Each step: input, AI action, output, human checkpoint (if any)
3. Failure modes + fallbacks
4. Estimated time saved per week
5. Tools to use from AIWedia categories (suggest 3)