A free n8n workflow for Shopify low‑stock alerts (and 4 gotchas)

说明与用途

新的 n8n 自动化流程为 Shopify 发送低库存 Slack 通知，每 4 小时检查所有变体，避免重复消息。

问题

Small Shopify stores need early low‑stock alerts, but Shopify only notifies after a sale attempt.

结果

The workflow runs every 4 hours, fetches all variants, filters low‑stock items, and sends a single Slack message only when new low‑stock items appear, avoiding duplicate alerts and gift‑card warnings.

工作流

• Every 4 hours trigger starts the workflow
• Manual trigger allows on‑demand execution
• Config node sets shop URL, API version, threshold, and Slack webhook
• Get access token node exchanges client ID and secret for a 24‑hour Admin API token
• Fetch all variants node calls productVariants in GraphQL and pages until hasNextPage is false
• Find changes node filters active, tracked variants at or below threshold and compares with last run
• Send to Slack node posts one message only when changes are detected

证据

I ran it on n8n 2.44.5 against a mock of the Shopify Admin GraphQL API

来源

Every 4 hours (or when you click Execute workflow) it starts.

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Get access token swaps your app's client ID and secret for a 24‑hour Admin API token.

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Fetch all variants calls productVariants in GraphQL and keeps paging until hasNextPage is false.

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