AI Agent Engineering

A practical engineering path for building production AI agents, covering ReAct, tool use, memory, multi-agent orchestration, observability, safety boundaries, self-driving codebases, Agent Shepherd workflows, and review gates for reliable autonomous systems.

23 Articles in This Series · 创建于 2026-02-06
1

How to Build an AI Agent: Production Architecture Guide

Learn how to build a production AI agent with typed tools, durable state, guardrails, human approval, tracing, and outcome evaluation. This practical architecture guide includes a runnable Python example, framework selection criteria, security boundaries, and a deployment checklist.

2

Multi-Agent Systems: When and How to Build Them

A production-oriented guide to multi-agent systems: when the pattern is actually justified, three coordination architectures, framework selection (CrewAI, AutoGen, LangGraph), runnable examples, and the failure modes—cost, cascading errors, and per-agent permission boundaries—that decide whether it survives contact with real workloads.

3

CrewAI in Practice: Building Multi-Agent Workflows

A practical CrewAI guide: the four core concepts, a runnable market-research crew, the difference between sequential and hierarchical processes, and the production concerns—delegation loops, untrusted tool output, and per-agent permissions—that decide whether a role-based crew is worth it over a single agent.

4

LangGraph vs AutoGen: Choosing a Multi-Agent Framework

A practical comparison of LangGraph and AutoGen: graph-based state machines versus conversation-driven agents, a runnable coder-and-tester example in both, and the production concerns—sandboxed code execution, loop limits, and per-agent permissions—that matter more than the framework you pick.

5

Open Source AI Agent Ecosystem: From Framework Choice to Safety Governance

A map of the open-source AI agent ecosystem: the MCP protocol at the base, LangGraph and CrewAI for orchestration, and application-layer assistants on top. Compare the leading frameworks by design bet rather than hype, and apply the safety governance—sandboxing, human-in-the-loop, and audit logging—that any enterprise deployment needs.

6

ReAct Framework Explained: Teaching LLMs to Think and Act

A deep dive into the ReAct (Reasoning and Acting) pattern for AI agents: how interleaving explicit reasoning with tool use and observation grounds a model in real facts, how it differs from Chain of Thought, a from-scratch Python trace, and the safety limits—loop caps and untrusted observations—that make it production-ready.

7

AI Agent Memory: Production Architecture and Evaluation

Design AI agent memory as a governed lifecycle rather than a vector database. Separate thread state, semantic facts, episodic evidence, and procedural knowledge; implement consent-aware writes, temporal updates, conflict resolution, secure retrieval, deletion, and LongMemEval-style evaluation.

8

Claude Code in Practice: Full-Stack Agent Programming from Terminal to CI/CD

A practical guide to Claude Code's core capabilities and real workflows: autonomous terminal coding, building custom agents with the SDK, GitHub Actions CI/CD integration, CLAUDE.md configuration, multi-file editing, and automated review — plus the security boundaries to keep firm when you grant a terminal agent real access to your files, shell, and repositories.

9

The Cloud Agent Era: A Paradigm Shift from Synchronous AI Coding to Autonomous Agents

An in-depth analysis of the three eras of AI-assisted programming — from Tab autocomplete to synchronous agents to Cloud Agents. Examines the core architecture of Cursor Background Agents, TRAE SOLO, and GitHub Agentic Workflows, explores the self-driving codebase vision, and charts how the developer role is fundamentally changing.

11

AI Agent Frameworks 2026: A Decision Framework

Choose an AI agent framework by workflow topology, state durability, model portability, tool governance, human approval, deployment, and operating cost. Compares LangGraph, OpenAI Agents SDK, Strands Agents, CrewAI, AG2, and Claude Agent SDK without unverifiable rankings or vendor benchmarks.

14

Self-Driving Codebase: When 35% of PRs are Created by Agents [2026]

Explore the era of the Self-Driving Codebase. Learn how autonomous AI Agents are taking over routine maintenance, dependency updates, and code refactoring — and what Cursor's dated disclosure that agents authored ~35% of its team's merged Pull Requests really means for your workflow.

15

A2UI: Building Safe Agent-Driven User Interface Contracts

A practical engineering guide to A2UI-style Agent-to-UI contracts. Learn how to pin a protocol version, treat generated UI payloads as untrusted data, constrain a component catalog and renderer, authorize every server-side action, protect users from injection and phishing, and test accessibility, retries, privacy, and rollback before production.

16

A2UI, AG-UI, and AI SDK: Choose the Right UI Boundary

A practical comparison of A2UI-style UI contracts, AG-UI-style event protocols, and framework-owned AI UI runtimes. Evaluate payload contracts, transport, rendering, trust boundaries, action authorization, accessibility, recovery, and upgrade risk without treating evolving packages or model output as production guarantees.

17

AI Agents: Moving from POC Evidence to Production Control

A practical guide to moving an AI Agent from a proof of concept to production. Define a workload contract, separate model proposals from authorized effects, evaluate representative failures, use privacy-preserving observability, control cost and retries, and release through reversible stages instead of relying on demo success or generic benchmarks.

20

Agent Observability: Traces, Evals, and Debugging

Design an observability system for production AI agents that explains what happened without collecting hidden chain-of-thought or unnecessary personal data. This guide defines an event contract, OpenTelemetry boundaries, cost and quality signals, offline and online evaluation, replay-safe debugging, sampling, retention, and failure tests.

22

What Is an Agent Loop? AI Agent Runtime Guide

Understand the Agent Loop: observation, reasoning, tool use, feedback, state updates, stopping rules, failure modes, and a production checklist for AI agents.