agent_action: Prompt-lab work item started
agent_action: Pinned repository checkout verified
agent_action: I'll research the repository to understand its architecture and agent setup before ...
command: find /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2 -type f -name "*.json" -o -name "*.txt" -o -name "*.toml" -o -name "*.mod" -o -name "*.yaml" -o -name "*.yml" | grep -E "(package\.json|requirements|pyproject|go\.mod|Dockerfile|docker-compose)" | head -20
command: ls -la /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2/
agent_action: Read README.md
agent_action: Read requirements.server.txt
agent_action: Read requirements.client.txt
command: ls -la /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2/server/ && ls -la /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2/client/
agent_action: Read server/config.py
agent_action: Read server/main.py
command: ls -la /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2/server/modules/
agent_action: Read server/modules/vectorstore.py
agent_action: Read server/modules/llm.py
agent_action: Read server/modules/auth.py
agent_action: Read client/main.py
command: ls -la /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2/server/db/ && cat /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2/compose.yaml
agent_action: Read server/db/models.py
agent_action: Read server/db/database.py
agent_action: Read client/api_client.py
command: git -C /home/user/worktrees/attempt-5f5cfce6-2c1d-4d7b-b853-3d923d6aad39-cap-2 log --oneline -15
agent_action: Read server/tests/test_hybrid_search.py
agent_action: Now I understand the repo: a Python/FastAPI + LangChain RAG app using Groq LLM with...
agent_action: Let me research the leading candidates in parallel, focusing on those emphasizing l...
search: best web search API for LLM agents 2026 licensed sources Tavily Exa Linkup comparison
search: Linkup search API licensed premium content sources LLM grounding
search: Valyu search API licensed proprietary data LLM RAG
agent_action: Both Linkup and Valyu emphasize licensed sources. Let me consult their actual docs ...
url: https://docs.linkup.so/pages/documentation/get-started/concepts
url: https://docs.valyu.ai/overview
url: https://docs.tavily.com/documentation/integrations/langchain
agent_action: Let me verify Linkup's LangChain integration before recommending it, since the docs...
search: langchain-linkup LinkupSearchRetriever python package LangChain integration
agent_action: ## Recommendation: **Linkup** For this repo — a LangChain RAG app (`server/modules/...
result: Selected unknown