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Inventory replenishment monitoring

Watch SKU-level stock across Shopify, Amazon, and your fulfillment system. Alert the planning team in Slack the moment a SKU drops below its reorder point.

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The prompt

I want to monitor inventory levels across Shopify, Amazon Seller Central, and Fulfil in real time. Can you build me a flow that joins SKU-level stock data across all three platforms, compares current quantities against reorder thresholds, and pushes alerts for any flagged SKUs directly to Slack?

Just copy and paste the prompt into a new Parabola flow to get started.

What Parabola builds

A workflow with six steps you can edit:

1. Pull stock from each channel. Shopify storefront, Amazon Seller Central, Fulfil or your WMS. Whatever channels carry the SKU, the flow connects to each one.

2. Standardize the SKU. Normalize casing, strip channel prefixes, and map between code systems so the same SKU lines up across rows.

3. Join on SKU. One row per SKU with one column per channel. Plus the reorder threshold from your master table.

4. Compare against threshold. Flag any SKU below its reorder point, with the gap in units and days of cover.

5. Push the alert. A Slack message to your planning channel with the flagged SKUs, sorted by urgency.

6. Run on a schedule. Hourly during peak, daily off-peak, or on a trigger when a channel finishes syncing.

Why teams stop doing this manually

Stockouts do not happen quietly. The Shopify channel runs out first because that is where the demand is loudest. Amazon hides the stockout for a few hours behind buffer logic, then suppresses the listing. The 3PL portal shows healthy inventory the whole time because the units never left the bin, they just sold faster than the threshold was being checked.

The manual version of this work is a planner refreshing four tabs and a Slack message that goes out when they remember. It works on a normal week. It breaks the week a new SKU is on a paid push and channel velocity triples in two days. By the time a person notices the gap, the channel is suppressed and the marketing team is asking why a SKU is dark.

The work is mechanical and fast. Pull stock, line up the SKUs, compare to threshold, alert. The judgment is in the threshold, not in the comparison. That part belongs in a flow.

How it works

Step 1. Paste the prompt.

Open Parabola, paste the prompt in section 2, and let it ask follow-up questions about which channels you sell on, where the reorder threshold lives, and which Slack channel should receive the alert.

Step 2. Connect your data.

API connections to Shopify, Amazon Seller Central, and your WMS or ERP. Plus the threshold table that says what reorder point each SKU is supposed to hit.

Step 3. Run it on a schedule.

Hourly during peak, daily off-peak. The flow refreshes against live stock and sends the alert only when something crosses the threshold.

Related prompts

FAQ

Does this work if I sell on more than three channels?

Yes. Add a source pipeline for each channel, run it through the same SKU standardization, and join it into the comparison. Five or six channels is common.

Can the alert route to different Slack channels?

Yes. Tag each SKU with category, brand, or planner. The flow splits the alert by tag so the right team sees the right SKUs.

What about reorder thresholds that change seasonally?

The threshold is a table. Update it weekly, monthly, or per drop. The flow re-reads the table every run.

Can the flow trigger a reorder draft, not just an alert?

Yes. Optional output: a draft PO or a CSV the buyer reviews and confirms. Keep humans on the approval, automate the prep.

How is this different from a native low-stock alert in Shopify?

Shopify only sees Shopify. The flow joins every channel that sells the SKU and applies your reorder logic across all of them. Plus it works for SKUs that live in multiple warehouses.
Catch the stockout before the channel goes dark.
Paste the prompt, point it at your channels and your reorder table, and let the alert run on its own.
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