LangGraph Sidekick Agent

A single-file LangGraph agent (worker + evaluator) with Gradio UI, MemorySaver checkpointing, and built-in tools.

• Minimal tools: get_time, write_text_file
• Optional extended tools when USE_PLAYWRIGHT=1: Playwright browser toolkit, Serper search, Wikipedia, Python REPL, Pushover

Quickstart

python -m venv .venv
# Windows
.venv\Scripts\activate
# macOS/Linux
source .venv/bin/activate

pip install -U langgraph langchain-openai langchain-community langchain-core gradio python-dotenv pydantic typing_extensions nest_asyncio
# Optional:
pip install -U playwright wikipedia
playwright install

# Env
cp .env.example .env
# put your OPENAI_API_KEY in .env

python sidekick_agent.py

Optional (enable extended tools)

# Windows
set USE_PLAYWRIGHT=1
# macOS/Linux
export USE_PLAYWRIGHT=1

Topics

langgraph
multi-agent
structured-outputs
gradio
ai-agent
tool-calling
memory
openai
playwright
pydantic
state-machine

License

MIT