b1kash/langchain-agent-poc repository overview

⁠langchain-agent-poc

Customer-support AI agent PoC built with LangChain and LangGraph, running on a local Qwen 2.5 model via Ollama. Source code and full README: https://github.com/bikashshah-lgtm/langchain-agent-poc⁠

⁠Tags

• 1.0 – LangChain tool-calling agent (agent.py)
• 1.1 – adds LangGraph agent with human-in-the-loop approval (graph_agent.py)
• 1.2 – adds Langfuse tracing (agent_langfuse.py)

⁠Run

Requires Ollama on the host with qwen2.5:7b pulled.

docker run --rm -e OLLAMA_BASE_URL=http://host.docker.internal:11434 b1kash/langchain-agent-poc:1.2

Human-in-the-loop version (interactive):

docker run -it --rm -e OLLAMA_BASE_URL=http://host.docker.internal:11434 b1kash/langchain-agent-poc:1.2 python graph_agent.py

Optional tracing: pass LangSmith/Langfuse keys with --env-file .env (no quotes around values).

Note: built on Apple Silicon (ARM64).