My n8n Review-Reply Bot Opened 48 of 48 Replies with "Thank You For". Here’s the Fix

Description and use

Automated review replies in n8n frequently use generic stock phrases and ignore specific feedback. Adding a deterministic Code node that checks replies removes these issues, ensuring only relevant, policy‑compliant responses are posted.

Problem

Automated review replies from a small business often use generic stock phrases and fail to address specific customer feedback, risking customer dissatisfaction and potential legal issues.

Outcome

The deterministic Code node reduced generic, policy‑violating replies and ensured that only context‑aware, safe responses are posted automatically, improving reply quality and compliance.

Workflow

• Webhook triggers workflow
• Config node sets variables
• Build Prompt node constructs LLM prompt
• HTTP Request node calls /v1/chat/completions on local Ollama
• Parse response JSON
• Check Reply Code node applies deterministic rules
• If safe, Respond to Webhook node posts reply; otherwise, route to human review

Evidence

48 / 48

Source

29 / 48

Source

The change that mattered was adding a Check Reply Code node right after the LLM call.

Source