Strands Agents SDK Python v1.57.0 发布
原标题：python/v1.57.0
AI 摘要
Strands Agents SDK 发布 Python 版 v1.57.0，主要新增默认使用 Opus 5 与高思考模式、合并 Strands Harness、BedrockModel 支持 requestTimeout、新增 mcp_router 工具与 handoff_to_user 工具、Graph 和 Swarm 支持快照会话管理，并上线重新设计的 Strands 官网。同时修复了 CLI 安装、MCP 认证、OpenAI 提示缓存计费、中断传播等问题，并补充了 MCP OAuth 配置等文档。
正文节选
## python/v1.57.0 _Auto-drafted from commits in `python/v1.56.0..python/v1.57.0`, grouped by conventional-commit type. Edit on the release page after publish if you want a polished writeup; the canonical release notes live on the website._ ### 🚀 Features - feat(defaults): opus 5 and high thinking by default (#4460) (c3fc5ff81) - feat(site): launch the redesigned Strands website (#4446) (1fd2ad684) - feat: merge in the Strands harness (#4447) (4095cf5a6) - feat(bedrock): requestTimeout option