HR & IT Support in Telegram with Voice & RAG

# Telegram bot for HR & IT support with voice transcription and document retrieval

This workflow implements an intelligent chatbot in Telegram to automate internal employee support. The system accepts both text and voice messages, transcribes audio using OpenAI, and processes queries through a LangChain-powered AI agent with RAG that retrieves accurate responses from a PostgreSQL vector store. Knowledge sources are internal PDF documents such as employee handbooks, sick leave procedures, or working hour policies.

## Who it´s for
- HR specialists automating responses to common employee questions
- Corporate IT support teams reducing workload through self-service
- Administrators of internal corporate Telegram channels
- Companies deploying AI assistants based on existing documentation

## What the automation does
- Receives messages in Telegram — both text and voice
- Transcribes voice messages to text using OpenAI Whisper
- Routes the query to a LangChain agent with RAG backed by PostgreSQL vector storage
- Retrieves relevant information from indexed PDF documents
- Generates context-aware responses using chat memory
- Sends the answer back to the user in Telegram
- Handles unsupported formats (photos, stickers) gracefully

## What´s included
- Ready-to-use n8n workflow
- Trigger and handler logic based on new Telegram messages
- Integrations with Telegram, OpenAI, and PostgreSQL
- Basic written instructions for setup and adaptation

## Requirements for setup
- n8n instance with workflow execution capabilities
- OpenAI API key
- PostgreSQL instance with vector operations enabled (e.g., pgvector)
- Telegram bot token configured via BotFather
- Internal PDF documents to populate the vector knowledge base

## Benefits and outcomes
- Reduced workload for HR and IT departments
- Instant 24/7 responses for employees
- Fewer repetitive inquiries handled manually
- Voice input support improves usability
- Answers based on up-to-date official documentation
- Minimized risk of policy misinterpretation
- Scalable support without hiring additional staff

## Important: template only
Important: you are purchasing a ready-made automation workflow template only. Rollout into your infrastructure, connecting specific accounts and services, 1:1 setup help, custom adjustments for non-standard stacks and any consulting support are provided as a separate paid service at an individual rate. To discuss custom work or 1:1 help, contact via chat