1. One-Sentence Summary
A WhtsApp-based AI Knowledge Assistant for Devcon that uses RAG on ChromaDB and allows speakers/admins to upload documents directly via WhtsApp for instant attendee access.
2. What Is This Discussion About?
A conversational AI system — accessible to all attendees on WhtsApp — that automatically learns from speaker uploads and Devcon content in real time, enabling accurate, grounded answers about sessions, speakers, slides, and technical topics.
3. Abstract
The Devcon AI Knowledge Twin is an open-source, WhtsApp-accessible assistant that uses Retrieval-Augmented Generation (RAG) over ChromaDB to provide real-time, citation-backed answers to attendee questions.
A key innovation is that speakers and organizers can upload PDFs, slides, text, or links directly via WhtsApp, which are instantly ingested into the vector database and become available for users.
The assistant acts as a dynamic, always-current knowledge layer for Devcon.
4. Motivation
Attendees often miss important information because:
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Slides are uploaded late or scattered across platforms
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Agendas change
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New announcements don’t reach everyone
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Websites/apps require time and attention that people don’t have during events
WhtsApp is universally accessible, and RAG ensures that answers remain accurate and grounded in official, up-to-date content.
Speaker-driven uploads eliminate friction, enabling Devcon to provide real-time information at scale.
5. Specification
5.1 Attendee Features
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Natural-language Q&A about:
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Agenda, schedule updates, room changes
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Speaker backgrounds
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Slide contents + talk summaries
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ZK, MEV, Rollups, staking, and other technical subjects
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Personalized session recommendations
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Daily digest
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Citation-backed answers (source, timestamp)
5.2 Speaker/Admin Upload Features
Speakers and organizers can upload via WhtsApp:
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PDFs
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PPTX
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Notes or text
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Links
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Last-minute announcements
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Session updates
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Scripts, diagrams, images (OCR extractable)
Automated Pipeline:
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Verify speaker/admin number
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Extract text (PDF → text, DOCX → text, OCR if needed)
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Clean, chunk, and embed
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Insert into ChromaDB with metadata (speaker, track, timestamp, type)
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RAG system updates instantly
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Users receive updated factual answers
This reduces friction and makes the assistant instantly up-to-date.
5.3 WhtsApp Bot Structure
User Bot (public)
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Primary interface for attendees
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Answers questions using RAG
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Sends daily summaries (opt-in)
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Shares speaker slides or documents on demand
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Never hallucinates (strict grounding)
Admin Bot (private)
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Accepts content uploads
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Supports commands such as:
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upload: ingest a file
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delete: remove outdated content
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list: show indexed documents
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announce: broadcast update
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Designed for simplicity and accessibility
5.4 Backend & Architecture
[WhtsApp Cloud API]
|
Webhooks
|
-----------------
| Message Router |
-----------------
/ \
User Query Admin Upload
| |
RAG Engine Ingestion Pipeline
| |
———— ChromaDB Vector Store ————
(with metadata)
Tech Components
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WhtsApp Official Cloud API
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ChromaDB (vector search)
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Embedding model
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Backend (FastAPI/Flask)
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Storage for original uploaded files
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Automatic parsing + chunking pipeline
6. Rationale
Attendees benefit because:
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No apps required
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Works in low connectivity
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Answers are immediate and accurate
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Content stays fresh and comprehensive
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Useful before, during, and after Devcon
Speakers benefit because:
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They can upload directly via WhtsApp
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No need for additional platforms
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Their audience gets updated information instantly
Devcon benefits because:
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Strong alignment with open-source public goods
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Improves attendee experience dramatically
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Supports education and accessibility
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Reusable for future events
7. Risks & Mitigations
| Risk | Mitigation |
|---|---|
| Unverified content uploads | Whitelisted speaker/admin numbers |
| Parsing errors | Multiple extraction pipelines + fallback OCR |
| Hallucination | Strict retrieval-only responses |
| Outdated data | Simple remove/edit commands for admins |
| Vector store corruption | Automatic periodic backups |
8. License
Open-source under MIT or Apache 2.0.
9. Conclusion
The Devcon AI Knowledge Twin transforms Devcon into a real-time, searchable knowledge experience available through WhtsApp — the most universal communication platform in the world.
By enabling speakers to upload documents directly via WhtsApp and automatically ingest them into ChromaDB, Devcon gets a living, breathing knowledge layer that benefits every attendee.