building-streamlit-chat-ui

Build Streamlit chat UIs with st.chat_message, st.chat_input, and streaming responses.

Updated Jan 31, 2026
One-click install
npx skills add https://github.com/Mahaboob26/NEXUS-TRUSAI --skill building-streamlit-chat-ui-mahaboob26
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: building-streamlit-chat-ui
Source: https://github.com/Mahaboob26/NEXUS-TRUSAI/tree/main/.agents/skills/developing-with-streamlit/skills/building-streamlit-chat-ui
Command: npx skills add https://github.com/Mahaboob26/NEXUS-TRUSAI --skill building-streamlit-chat-ui-mahaboob26

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps developers rapidly create polished Streamlit-based conversational UIs by leveraging st.chat_message, st.chat_input, message history, and streaming responses, reducing boilerplate and enabling real-time interactions.

Core Features & Use Cases

  • Chat UI construction: Implement chat histories with st.session_state and st.chat_message to render messages for both user and assistant.
  • Streaming responses: Display token-by-token outputs using st.write_stream and generator-based streams for a snappy user experience.
  • LLM integration examples: Patterns for connecting to OpenAI or other providers and handling avatars, suggestion chips, file uploads, and audio input to power assistants.

Quick Start

Install Streamlit and create a minimal app that demonstrates a chat interface using st.chat_message, st.chat_input, and a simple response generator. Then run the app with the command: streamlit run your_app.py.

Frequently Asked Questions about building-streamlit-chat-ui

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a chat UI in Streamlit with real-time messaging?▼

Build a Streamlit chat UI using st.chat_message, st.chat_input, and st.write_stream to render message histories and display token-by-token streaming responses for real-time conversational interfaces.

How does streaming response work in a Streamlit conversational app?▼

Streaming responses in Streamlit work by passing a generator-based stream to st.write_stream, enabling snappy token-by-token output rendering directly within the st.chat_message component.

Can I use st.chat_message to manage chat history with session state?▼

Yes, you can manage chat history by storing messages in st.session_state and iterating through them to render the conversation using st.chat_message for both user and assistant roles.

Do I need an OpenAI API key to create a Streamlit chat interface?▼

No, integrating OpenAI or other LLM providers is optional. You can create a minimal Streamlit chat interface using a simple response generator without connecting to an external LLM provider.

What Python version is required for Streamlit chat UI development?▼

Streamlit chat UI development requires Python 3.9 or higher alongside the Streamlit framework to support st.chat_message, st.chat_input, and st.write_stream components.

Does Streamlit chat UI support file uploads and suggestion chips?▼

Yes, Streamlit chat UIs support adding file uploads, suggestion chips, avatars, and audio input alongside basic LLM integration to build comprehensive conversational interfaces.