Agents API
by OpenAI
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OpenAI's Agents API and SDK provide a production-ready framework for building AI agents with built-in tools, multi-agent handoffs, guardrails, and tracing. It combines the Responses API with open-source Python and TypeScript SDKs to orchestrate complex workflows on OpenAI models.

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Articles mentioning Agents API (1)
01OpenAI_Agents_API:_The_Infrastructure_Behind_Codex_&_ChatGPTSep 11, 2026
Key Features
Responses API for stateful, tool-using agent workflows
Built-in tools including web search, file search, code interpreter, and computer use
Open-source Agents SDK for Python and TypeScript
Multi-agent orchestration with handoffs and routing
Guardrails for input/output validation and safety
Tracing and observability for debugging agent runs
Function calling and custom tool integration
MCP server support for external tools and data
Pros & Cons
Pros
Tight integration with OpenAI's latest models and built-in tools
Open-source SDK simplifies orchestration, handoffs, and guardrails
Production features like tracing, evals, and stateful sessions
Backed by extensive OpenAI documentation and ecosystem
Cons
Vendor lock-in to OpenAI models and platform
Usage-based costs can scale quickly with multi-agent and tool calls
Evolving APIs and Assistants API migration add maintenance overhead
Requires development work; less no-code than visual agent builders