How to Deploy an AI Agent to Production on AWS Lambda (Serverless)
Lambda isn't a cheaper container: no warm process for state, a 900-second ceiling, and streaming that's native only on Node.js. Here's how to ship an agent around all three.
Topic
AI Agents
Agent frameworks (LangChain, CrewAI, etc.)
How to Deploy an AI Agent to Production with Express and Docker
A copy-paste recipe for wrapping a Node.js agent in a streaming Express route, a non-root multi-stage Dockerfile, and a BullMQ queue that stops one long-running agent turn from hanging your whole event loop.
How to Deploy an AI Agent to Production with FastAPI and Docker
A copy-paste recipe for wrapping a LangGraph, Pydantic AI, or LangChain agent in a FastAPI endpoint, a non-root multi-stage Dockerfile, and a timeout that stops one stalled model call from hanging your whole worker pool.
How to Handle Errors in Custom LangChain Tools (with Middleware)
Why handle_tool_error stops working the moment your LangChain agent has middleware attached, and how to catch tool errors with wrap_tool_call or ToolRetryMiddleware instead.
How to Fix LangChain AgentExecutor Not Calling Tools
AgentExecutor's verbose trace shows it choosing a tool, then the chain just finishes - no error, no tool result. Here's why, and the five-check fix.
Fix LangChain create_react_agent 'unexpected keyword argument prompt'
The TypeError comes from a kwarg rename between langgraph versions - or the wrong create_react_agent import entirely. Here's how to tell which and fix it.
Fix LangChain Output Parsing Errors (handle_parsing_errors=True)
handle_parsing_errors=True only retries LangChain's free-text ReAct loop -- it can't fix a model that won't format output reliably. Here's what actually works.
Best LLM for AI Agent Workflows: 2026 Cost/Latency Comparison
Which LLM should power your agent? A 2026 cost and task-class breakdown of Claude Opus 4.8, GPT-5.2, Gemini 3.1 Pro, and DeepSeek V3.
Best AI Agent Framework for Node.js Developers in 2026
Mastra, Vercel AI SDK, LangChain.js, or the OpenAI Agents JS SDK? Here's the Node-specific ranking most 2026 roundups skip.
Best AI Agent Framework for Python Developers in 2026
LangGraph, Pydantic AI, CrewAI, and the OpenAI Agents SDK ranked for Python teams in 2026 - plus why AutoGen is no longer the safe default.