Guides

Building production AI agents, without the guesswork.

Everything we learned shipping agents at Einstein Labs — the production layer, the framework trade-offs, durable human-in-the-loop, the tools that matter. No hype, just what actually works in front of paying customers.

guide· 9 min

The Production Layer Every AI Agent Needs (and Why LangGraph Doesn't Give It to You)

Orchestration is solved. The production layer — memory, observability, guardrails, evals, human-in-the-loop — isn't. Here's what it takes to make an AI agent production-grade, and why every team rebuilds it from scratch.

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comparison· 11 min

LangGraph vs CrewAI vs a Vanilla Loop: Which Should You Actually Use in 2026

A practical, no-hype comparison of the three ways to build an AI agent in 2026 — LangGraph, CrewAI, and a plain function-calling loop — with a decision table and where each one breaks in production.

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guide· 10 min

How to Add Human-in-the-Loop Approval to Any AI Agent (With Durable Execution)

Risky agent actions need a human to approve them — and the pause has to survive a crash. Here's how durable, checkpointed human-in-the-loop works, and why in-memory approval flows lose state the moment a process dies.

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guide· 8 min

The 50 MCP Tools Every Production AI Agent Actually Needs

A working AI agent is 90% tools. Here are the 50 MCP-native tools — grouped by support, research, and coding agents — that cover the vast majority of real production use cases, and the wrapper pattern that makes adding your own a one-liner.

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guide· 8 min

What SaaS Boilerplates Taught Us About Building the Agent-Era Equivalent

ShipFast, Bullet Train and T3 collapsed weeks of SaaS plumbing into an afternoon and minted a generation of shipped products. AI agents are at that exact pre-boilerplate moment. Here's the playbook, applied.

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