Grade exam answers with GPT‑4.1 mini, plagiarism checks, Slack alerts and Google Sheets logging
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 31 nodes and runs manually, when you click “Execute workflow”. Along the way it connects OpenAI Chat Model, Google Sheets and Slack.
How it runs
Trigger: Manually, when you click “Execute workflow”.
- Workflow Configuration (Edit Fields (Set)): sets 6 fields: apiEndpoint, totalMarks, passingGrade…
- Retrieve Student Answer and Rubric (HTTP Request): calls an HTTP API
- Rubric Interpreter Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
- Primary Marker Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
- Quality Moderator Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
- Check Integrity Flags (If): checks a condition and branches into true / false
- Merge: merges the data from its input branches
- Feedback Generator Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
- Plagiarism Analyzer Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
- Route by Moderation Decision (Switch): routes items into 3 branches
…plus 8 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (12)
- Manual Trigger
n8n-nodes-base.manualTrigger - Edit Fields (Set)
n8n-nodes-base.set - HTTP Request
n8n-nodes-base.httpRequest - AI Agent
@n8n/n8n-nodes-langchain.agent - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Switch
n8n-nodes-base.switch - If
n8n-nodes-base.if - Code
n8n-nodes-base.code - Merge
n8n-nodes-base.merge - Google Sheets
n8n-nodes-base.googleSheets - Slack
n8n-nodes-base.slack
From the author
How It Works This workflow streamlines academic assessment through a multi-agent AI system that interprets rubrics, grades submissions, checks for plagiarism, performs quality moderation, generates feedback, and escalates borderline cases. Designed for…