agent_action: Prompt-lab work item started
agent_action: Pinned repository checkout verified
agent_action: I'll research the repository first to understand its architecture, then evaluate we...
command: find /home/user/worktrees/attempt-833b00a4-3b3a-4162-bb9e-5cb37a40e180-cap-2 -maxdepth 2 -type f \( -name "README*" -o -name "*.md" -o -name "package.json" -o -name "pyproject.toml" -o -name "requirements.txt" -o -name "setup.py" \) | head -20
agent_action: Read README.md
agent_action: Read requirements.txt
command: find /home/user/worktrees/attempt-833b00a4-3b3a-4162-bb9e-5cb37a40e180-cap-2 -maxdepth 2 -type f -name "*.py" | head -20
agent_action: Read app.py
agent_action: Read llm/llm_factory.py
agent_action: Read retrieval/rag_retriever.py
agent_action: Read llm/llm.py
agent_action: Read test_rag.py
agent_action: Read embeddings/embeddings.py
command: find /home/user/worktrees/attempt-833b00a4-3b3a-4162-bb9e-5cb37a40e180-cap-2 -type d | head -10
command: ls -la /home/user/worktrees/attempt-833b00a4-3b3a-4162-bb9e-5cb37a40e180-cap-2 | head -20
agent_action: Let me read the key integration files directly to ground my recommendation.
agent_action: Read retrieval/rag_retriever.py
agent_action: Read requirements.txt
agent_action: Repo confirmed: LangChain-based Python RAG chatbot, retrieval centralized in `RAGRe...
agent_action: Now I'll verify the three finalists (Tavily, Exa, Brave Search) against their curre...
search: Tavily Search API LangChain integration official documentation 2026
search: Exa API LangChain integration documentation 2026
search: Brave Search API LangChain integration documentation pricing 2026
agent_action: Now let me fetch each provider's official documentation to verify current details —...
url: https://docs.tavily.com/documentation/integrations/langchain
url: https://docs.exa.ai/reference/langchain
url: https://docs.langchain.com/oss/python/integrations/tools/brave_search
agent_action: Exa redirected and the Brave doc 404'd. Let me fetch the corrected URLs.
url: https://exa.ai/docs/reference/langchain
url: https://api-dashboard.search.brave.com/documentation/pricing
agent_action: Let me verify Tavily's free tier, which is a key differentiator, from its official ...
url: https://www.tavily.com/
url: https://www.tavily.com/pricing
agent_action: ## Recommendation: Tavily For this LangChain-based Python RAG chatbot, I'd choose *...
result: Selected unknown