# OpenAI Agents SDK (JS/TS) (@openai/agents) - AgentBreakWatch Reference

> TL;DR Verdict: OpenAI Agents SDK (JS/TS) (`@openai/agents`) is currently at v0.21.0 on NPM (published 2026-10-20), with a 90-day Stability Score of 69/100 (C+) and HIGH schema drift risk across 14 releases in the last 90 days. 0.x minor releases regularly refine handoff filter signatures, hosted MCP tool definitions, and RealtimeAgent voice session events.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/openai-agents-js
- Category Hub: https://agentbreakwatch.vercel.app/c/agent-sdks (AI Agent SDKs & Frameworks Breaking-Change Index)
- Package Name: `@openai/agents`
- Registry: NPM (https://www.npmjs.com/package/@openai/agents)
- GitHub Repository: https://github.com/openai/openai-agents-js
- Vendor: OpenAI
- Latest Live Version: v0.21.0
- Published Date: 2026-10-20T22:14:20.969Z
- 90-Day Release Count: 14
- Direct Dependencies: 4
- License: MIT
- Stability Score: 69/100 (Grade C+)
- Schema Drift Risk: HIGH
- Recommended Exact Pin Command: `npm install @openai/agents@0.21.0`
- Watched Symbols / MCP Tools: Agent, run, tool, handoff, hostedMcpTool
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
0.x minor releases regularly refine handoff filter signatures, hosted MCP tool definitions, and RealtimeAgent voice session events.

## Migration Diff: Before (Deprecated / Unpinned Pattern)
```
const myTool = tool({ name: "search", parameters: z.object({ q: z.string() }), execute: async ({ q }) => q });
```

## Migration Diff: After (Verified v0.21.0 Pattern)
```
const myTool = tool({
  name: "search",
  description: "Search docs",
  parameters: z.object({ q: z.string() }),
  strict: true,
  execute: async ({ q }) => q
});
```

## Recent Verified Releases
- v0.21.0 (published 2026-10-20) [LATEST]
- v0.20.0 (published 2026-10-08)
- v0.19.0 (published 2026-10-05)
- v0.18.0 (published 2026-09-10)
- v0.17.2 (published 2026-09-08)
- v0.17.1 (published 2026-09-08)