Automate inventory replenishment and purchase orders with Mistral AI and ERP
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes). 1 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 18 nodes and runs on a schedule (every 6 hours). Along the way it connects Postgres, Slack and Mistral Cloud Chat Model.
How it runs
Trigger: On a schedule (every 6 hours).
- Query ERP for low stock items (Postgres): run a query
- Fetch 90-day sales velocity data (Postgres): run a query
- Combine stock and sales data (Merge): merges the data from its input branches
- Calculate sales velocity and stockout risk (Code): runs custom JavaScript code
- Generate optimized purchase orders with Mistral AI (AI Agent): runs an AI agent, with model: Mistral AI language model; 2 tools (Tool: Get supplier catalog, Tool: Check budget availability)
- Parse and validate AI response (Code): runs custom JavaScript code
- Route based on approval criteria (If): checks a condition and branches into true / false
- Insert approved POs into ERP database (Postgres): run a query
- Flag for manager approval (Edit Fields (Set)): sets 2 fields: requiresManualReview, reviewReason
- Update inventory with pending orders (Postgres): run a query
…plus 4 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:
- AI Agent v1 (old agent modes) in Generate optimized purchase orders with Mistral AI (v1.7): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) Generate optimized purchase orders with Mistral AI (v1.7) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (11)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - Postgres
n8n-nodes-base.postgres - Merge
n8n-nodes-base.merge - Code
n8n-nodes-base.code - AI Agent
@n8n/n8n-nodes-langchain.agent - Call n8n Workflow Tool
@n8n/n8n-nodes-langchain.toolWorkflow - If
n8n-nodes-base.if - Send Email
n8n-nodes-base.emailSend - Slack
n8n-nodes-base.slack - Edit Fields (Set)
n8n-nodes-base.set - Mistral Cloud Chat Model
@n8n/n8n-nodes-langchain.lmChatMistralCloud
From the author
This AI-powered workflow monitors warehouse stock levels and sales velocity in real-time, uses machine learning to forecast demand, automatically generates optimized purchase orders with intelligent quantity recommendations, sends them directly to suppliers…