Lenny Growth Assistant

The Lenny Growth Assistant

A full-stack, configuration-driven RAG assistant over Lenny's Podcast transcripts.

The application lets users ask grounded questions about Lenny's Podcast, continue conversations within independent sessions, receive source citations, and generate a dedicated Ship30-style writing artifact from transcript-grounded material.

Features

• Grounded conversational Q&A over Lenny's Podcast transcripts
• Semantic retrieval with source-level attribution
• Conversation history persisted in PostgreSQL
• Independent chat sessions
• Explicit handling of unsupported and out-of-domain questions
• Follow-up questions using session context
• Source citations with episode/guest and timestamps
• Dedicated Ship30 writing skill
• Markdown artifact viewer beside the chat
• Local Ollama support for local demonstrations
• Anthropic provider support
• Claude Agent SDK + MCP transcript-search tool for the Anthropic agent path
• FastAPI backend
• Next.js frontend
• Automated retrieval and API tests
• Health endpoint and structured HTTP error handling

Architecture

                         +----------------------+
                         |    Next.js Frontend  |
                         +----------+-----------+
                                    |
                                    v
                         +----------------------+
                         |      FastAPI API     |
                         +----------+-----------+
                                    |
                    +---------------+---------------+
                    |                               |
                    v                               v
          +------------------+            +------------------+
          |   Chat Service   |            |   PostgreSQL     |
          +--------+---------+            | sessions/messages|
                   |                      | artifacts        |
                   |                      +------------------+