---
name: ai-agent-building
description: "Build production AI agents — LangGraph state machines, CrewAI teams, tool design, memory, RAG, MCP, multi-agent orchestration, evals, cost control, and safety. Use when building LangGraph/CrewAI agents, designing or validating tools, wiring RAG or MCP, adding human-in-the-loop, or running agent evals and safety reviews."
---
# AI Agent Building

## Reference guide

Read only the references needed for the current request:

- **Agent Architecture Fundamentals**: [references/agent-architecture-fundamentals.md](references/agent-architecture-fundamentals.md)
- **LangGraph: State Machine Agents**: [references/langgraph-state-machine-agents.md](references/langgraph-state-machine-agents.md)
- **CrewAI: Multi-Agent Teams**: [references/crewai-multi-agent-teams.md](references/crewai-multi-agent-teams.md)
- **Tool Design: Best Practices**: [references/tool-design-best-practices.md](references/tool-design-best-practices.md)
- **Memory Patterns**: [references/memory-patterns.md](references/memory-patterns.md)
- **RAG Pipeline: Production Patterns**: [references/rag-pipeline-production-patterns.md](references/rag-pipeline-production-patterns.md)
- **Multi-Agent Patterns**: [references/multi-agent-patterns.md](references/multi-agent-patterns.md)
- **Production Concerns**: [references/production-concerns.md](references/production-concerns.md)
- **Modern Agent Surfaces (2025-2026)**: [references/modern-agent-surfaces-2025-2026.md](references/modern-agent-surfaces-2025-2026.md)
- **Safety: Prompt Injection Defense**: [references/safety-prompt-injection-defense.md](references/safety-prompt-injection-defense.md)
- **Evaluation**: [references/evaluation.md](references/evaluation.md)
- **Checklist: Production Agent**: [references/checklist-production-agent.md](references/checklist-production-agent.md)
- **MCP (Model Context Protocol) Integration**: [references/mcp-model-context-protocol-integration.md](references/mcp-model-context-protocol-integration.md)
- **Deployment: Containerized Agent**: [references/deployment-containerized-agent.md](references/deployment-containerized-agent.md)
- **Cost Control**: [references/cost-control.md](references/cost-control.md)