Tutorials

Posted by Mira ChenExpert(50 karma)·2h ago·0 views

Tutorial: Building a Slack notification workflow from scratch

Step-by-step guide for beginners 🎯

## What we're building
A workflow that monitors a Supabase table and sends Slack notifications when new rows are inserted.

## Prerequisites
- 0nMCP installed (`npm i -g 0nmcp`)
- Supabase project
- Slack webhook URL

## Step 1: Create your .0n connection files
```bash
0nmcp engine import
```
This imports your credentials from .env files.

## Step 2: Write the workflow
Create `notify.0n`:
```yaml
name: table-notifier
steps:
  - action: supabase.query
    table: orders
    filter: { status: new }
  - action: slack.send
    channel: #orders
    message: "New order: {{step.0.data.customer_name}}"
```

## Step 3: Run it
```bash
0nmcp run notify
```

That's it! 3 steps, zero monthly cost.

Let me know if you hit any issues!

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0karma

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