packtpublishing/building-applications-and-agents-with-openai-codex/openai-agents-sdk

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Use when building or reviewing course labs that teach the OpenAI Agents SDK, including Agent, Runner, tools, handoffs, sessions, guardrails, RunConfig, SandboxAgent, UnixLocal SandboxRunConfig, RunState approvals, tracing, and SDK-first testing patterns.

Install

npx vskill@latest install packtpublishing/building-applications-and-agents-with-openai-codex/openai-agents-sdk

SKILL.md

OpenAI Agents SDK

Use this Skill for this course's SDK reference implementations. The goal is to teach the real OpenAI Agents SDK, not a course-specific abstraction.

Core Rules

  • Build directly with SDK objects: Agent, SandboxAgent, Runner,

RunConfig, tools, handoffs, sessions, guardrails, and RunState.

  • Do not create custom framework wrappers around agent execution.
  • Use helpers only when they return real SDK objects, for example

build_agent() or build_run_config().

  • Keep deterministic code in tools, fixtures, evals, and tests.
  • Use function-call-safe tool and handoff names: lowercase letters, digits, and

underscores only. Avoid spaces or display punctuation in Agent.name values that become handoff tools, or provide explicit safe tool names.

  • API-backed demos may require OPENAI_API_KEY, but local tests must still run

without making model calls.

Reference Map

Read the smallest reference needed for the current task:

  • references/core-sdk.md for Agent, Runner, RunConfig, results, and

tracing.

  • references/tools-guardrails-sessions.md for function tools, guardrails, and

sessions.

  • references/orchestration.md for handoffs and agents-as-tools.
  • references/sandboxagent-unixlocal.md for SandboxAgent,

SandboxRunConfig, manifests, capabilities, and Unix-local execution.

  • references/hitl-approvals.md for needs_approval, interruptions,

RunState, approval, and rejection.

  • references/testing-patterns.md for local tests, API-backed smoke tests, and

evals.

  • references/course-lab-patterns.md for reusable implementation knowledge

preserved from Labs 01, 04, 07, 08, and 09, including sampler, handoffs, SandboxAgent, SQL analyzer, and voice/realtime lab choices.

Official Sources

  • Skill-local official SDK checkout: openai-agents-python
  • Public docs quickstart:

https://developers.openai.com/api/docs/guides/agents/quickstart

  • Public sandbox docs:

https://developers.openai.com/api/docs/guides/agents/sandboxes

When public docs and the local SDK checkout differ, inspect the installed SDK version and official examples before changing course references.

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