Omni-Prompt Engineer Bot

Overview

This n8n workflow powers a Telegram bot designed for prompt engineering. By passing user messages through OpenRouter to the Gemini 3.1 Pro Preview model, it transforms rough ideas into highly optimized, production-ready system prompts. The AI is constrained by a strict system prompt to ensure it only returns its reasoning and the final prompt, completely eliminating conversational filler.

Features

• Seamless Telegram Integration: Listens for incoming messages and replies directly in the chat.
• Non-Blocking Architecture: Immediately acknowledges the Telegram webhook to prevent timeout errors.
• UX Enhancements: Sends a "typing" action to Telegram while the AI generates the response.
• Premium AI Processing: Connects to OpenRouter to utilize the google/gemini-3.1-pro-preview model.
• Strict Output Formatting: Forces the AI to reply with bulleted reasoning and the finalized prompt inside a Markdown code block.
• Error Handling: Automatically catches API failures and notifies the user directly in Telegram.

Prerequisites

Before importing this workflow, you will need the following:

• An active n8n instance (self-hosted or cloud).
• A Telegram Bot Token (obtained via BotFather).
• An OpenRouter API Key.

Installation

1. Download the workflow file named Omni-Prompt Engineer Bot(1).json to your local machine.
2. Open your n8n workspace.
3. Navigate to Workflows and click Add Workflow.
4. Click the options menu in the top right corner and select Import from File.
5. Upload the Omni-Prompt Engineer Bot(1).json file.
6. Open the Telegram Trigger, Show Typing Status, Push Result, and Notify Error nodes to connect your Telegram API credentials.
7. Open the OpenRouter API node and update the Bearer token in the Headers section with your actual OpenRouter API key.
8. Save and toggle the workflow to Active.

Workflow Architecture

This workflow executes in six distinct steps:

1. Telegram Trigger: Receives the text message from the user.
2. Ack (Release Connection): Returns a quick JSON status payload to release the webhook connection immediately.
3. Show Typing Status: Triggers a chat action in Telegram so the user knows the bot is processing the request.
4. OpenRouter API: Sends the user's text alongside a rigid system prompt to the Gemini model.
5. Push Result: Parses the successful Markdown response and sends it back as a reply to the original Telegram message.
6. Notify Error: If the OpenRouter API fails, this fallback node catches the error and sends a formatted warning to the user.