# Lubu-Labs > Open-source publisher. Listings imported from github.com/Lubu-Labs — credited to the original author with their license. - **Listings:** 9 - **Total installs:** 0 - **Profile:** https://agentstack.voostack.com/s/lubu-labs - **Website:** https://github.com/Lubu-Labs ## Published listings - [Langgraph Project Setup](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langgraph-project-setup) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langgraph-project-setup` Initialize and configure LangGraph projects with proper structure, langgraph.json configuration, environment variables, and dependency management. Use when users want to (1) create a new LangGraph project, (2) set up langgraph.json for deployment, (3) configure environment variables for LLM providers, (4) initialize project structure for agents, (5) set up local development with LangGraph Studio,… - [Langsmith Deployment](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langsmith-deployment) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langsmith-deployment` Deploy and operate production agent servers with LangSmith Deployment. Use when work involves choosing Cloud vs Hybrid/Self-hosted-with-control-plane vs Standalone, preparing/validating langgraph.json, creating deployments or revisions, rolling back revisions, wiring CI/CD to control-plane APIs, configuring environment variables and secrets, setting monitoring/alerts/webhooks, or troubleshooting… - [Deepagents Setup Configuration](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-deepagents-setup-configuration) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-deepagents-setup-configuration` Initialize, validate, and troubleshoot Deep Agents projects in Python or JavaScript using the `deepagents` package. Use when users need to create agents with built-in planning/filesystem/subagents, configure middleware/backends/checkpointing/HITL, migrate from `create_react_agent` or `create_agent`, scaffold projects with repo scripts, validate agent config files, and confirm compatibility with c… - [Langgraph State Management](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langgraph-state-management) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langgraph-state-management` Design state schemas, implement reducers, configure persistence, and debug state issues for LangGraph applications. Use when users want to (1) design or define state schemas for LangGraph graphs, (2) implement reducer functions for state accumulation, (3) configure persistence with checkpointers (InMemorySaver/MemorySaver, SqliteSaver, PostgresSaver), (4) debug state update issues or unexpected s… - [Langgraph Error Handling](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langgraph-error-handling) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langgraph-error-handling` Implement LangGraph error handling with current v1 patterns. Use when users need to classify failures, add RetryPolicy for transient issues, build LLM recovery loops with Command routing, add human-in-the-loop with interrupt()/resume, handle ToolNode errors, or choose a safe strategy between retry, recovery, and escalation. - [Langgraph Agent Patterns](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langgraph-agent-patterns) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langgraph-agent-patterns` Implement multi-agent coordination patterns (supervisor-subagent, router, orchestrator-worker, handoffs) for LangGraph applications. Use when users want to (1) implement multi-agent systems, (2) coordinate multiple specialized agents, (3) choose between coordination patterns, (4) set up supervisor-subagent workflows, (5) implement router-based agent selection, (6) create parallel orchestrator-wor… - [Langgraph Testing Evaluation](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langgraph-testing-evaluation) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langgraph-testing-evaluation` Use this skill when you need to test or evaluate LangGraph/LangChain agents: writing unit or integration tests, generating test scaffolds, mocking LLM/tool behavior, running trajectory evaluation (match or LLM-as-judge), running LangSmith dataset evaluations, and comparing two agent versions with A/B-style offline analysis. Use it for Python and JavaScript/TypeScript workflows, evaluator design,… - [Langsmith Trace Analyzer](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-langsmith-trace-analyzer) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-langsmith-trace-analyzer` Fetch, organize, and analyze LangSmith traces for debugging and evaluation. Use when you need to: query traces/runs by project, metadata, status, or time window; download traces to JSON; organize outcomes into passed/failed/error buckets; analyze token/message/tool-call patterns; compare passed vs failed behavior; or investigate benchmark and production failures. - [Deepagents Planning Todos](https://agentstack.voostack.com/l/skill-lubu-labs-langchain-agent-skills-deepagents-planning-todos) — Skill · Free · security-reviewed — `agentstack add skill-lubu-labs-langchain-agent-skills-deepagents-planning-todos` Use the write_todos tool effectively for task planning and decomposition in Deep Agents. Use when users want to (1) implement task planning with write_todos, (2) break down complex tasks into subtasks, (3) track agent progress through todos, (4) debug why todos aren't completing, (5) design todo structures for different task types (research, coding, analysis), (6) understand todo status lifecycle… --- Seller on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Install any with `agentstack add `.