Chat with your PDF documents using PageIndex vectorless RAG via Telegram
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 workflow has 8 nodes and runs on Telegram events (message) (plus 1 other trigger). Along the way it connects Telegram. It also calls api.pageindex.ai over HTTP.
How it runs
Trigger: On Telegram events (message) (plus 1 other trigger).
- Download PDF File (Telegram): work with file
- Fetch All Indexed Documents (HTTP Request): calls api.pageindex.ai
- Index PDF on PageIndex (HTTP Request): calls api.pageindex.ai (POST)
- Extract Document IDs (Edit Fields (Set)): sets 1 field: doc_ids
- LLM Reasoning over Document Tree (HTTP Request): calls api.pageindex.ai (POST)
- Send Answer to User (Telegram): uses Telegram
Services it uses
HTTP calls to: api.pageindex.ai
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 (4)
- Telegram Trigger
n8n-nodes-base.telegramTrigger - Telegram
n8n-nodes-base.telegram - HTTP Request
n8n-nodes-base.httpRequest - Edit Fields (Set)
n8n-nodes-base.set
From the author
Build a Vectorless PDF Knowledge Bot on Telegram Using PageIndex RAG 👤 Who Is This For? This template is built for developers, researchers, and automation builders who want to create a document Q&A system — without the complexity of vector databases,…