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AIOctober 202611 min read

OpenAI Agents API vs Agents SDK vs Responses API: Which?

OpenAI now documents four ways to build an agent. A decision guide to the Agents API, Agents SDK, Responses API and ChatKit: who owns the loop, where state lives, ZDR, data residency, cost and lock-in.

AIOctober 202611 min read

OpenAI Agents SDK Guardrails: Input, Output and Tool Checks

The OpenAI Agents SDK has three guardrail layers that run at different points of a workflow. Here is when each fires, why parallel input checks can let a tool run anyway, and how a tool guardrail stops a journal entry posting to the wrong branch.

AIOctober 202611 min read

OpenAI Agents SDK Handoffs vs Agents as Tools Explained

A handoff gives the conversation to a specialist; agent.as_tool() borrows the specialist and keeps the conversation. That choice decides history, guardrails and tracing.

AIOctober 202612 min read

OpenAI Agents SDK Sandbox Agents: Manifest, Docker, E2B

SandboxAgent, the Manifest, capabilities, lazy skills, Unix-local versus Docker and E2B, snapshots and resume: give an agent a shell, not your laptop.

AIOctober 202612 min read

OpenAI Agents SDK Sessions: SQLite, Redis and Postgres Memory

Choosing a memory backend for the OpenAI Agents SDK: SQLiteSession, RedisSession, SQLAlchemySession on Postgres or server-side Conversations, plus the compaction and encryption wrappers, compared on multi-worker safety, retention and branching.

AIOctober 202612 min read

OpenAI Agents SDK TypeScript Tutorial: Build a Tool Agent

A TypeScript-first build with @openai/agents: zod-typed tools, a hosted file search, a handoff, streaming from a Next.js route, a maxTurns cap and promptfoo trajectory tests.

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