OpenAI Agents SDK
OpenAI's official Python SDK for building multi-agent systems — provides agents, tools, handoffs, tracing, and native MCP integration with a minimal, production-ready API.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Official OpenAI SDK with clean, minimal dependency tree. MIT licensed. Secrets via environment variables. MCP security depends on individual server configurations. Guardrails built-in for output safety.
⚡ Reliability
Best When
You're building with OpenAI models and want an official, opinionated framework with handoffs, tracing, and MCP integration out of the box.
Avoid When
You need to run on Anthropic, Gemini, or open models — this SDK only supports OpenAI API-compatible endpoints.
Use Cases
- • Building multi-agent systems where agents hand off tasks to specialized sub-agents
- • Creating tool-using agents with structured inputs and guardrails
- • Orchestrating OpenAI model calls with built-in tracing and observability
- • Native MCP server integration to give agents access to external tools
- • Customer service, coding assistant, and research agent workflows
Not For
- • Non-OpenAI LLM providers (SDK is OpenAI-specific; use PydanticAI or LangChain for multi-provider)
- • Simple single-call LLM tasks (direct openai.chat.completions is simpler)
- • Teams that need to avoid OpenAI vendor lock-in
Interface
Authentication
Uses OpenAI API key (OPENAI_API_KEY environment variable). MCP server connections use each MCP server's own auth. No separate SDK auth layer.
Pricing
SDK is free. All costs are OpenAI API token costs for model calls made by your agents.
Agent Metadata
Known Gotchas
- ⚠ Only works with OpenAI API-compatible endpoints — hard to switch LLM providers
- ⚠ Handoffs are one-way — once an agent hands off, the original agent doesn't get the result
- ⚠ MCP connections are per-agent — each agent needing MCP must configure its own connection
- ⚠ Streaming requires special handling — output is streamed per-event, not as final result
- ⚠ Guardrails run as separate LLM calls — doubles cost for checked operations
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for OpenAI Agents SDK.
Scores are editorial opinions as of 2026-03-06.