Strands Agents SDKStrands Agents SDK
AWS 的开源 agent SDK（Apache-2.0）：model-driven 循环、装饰器式工具、MCP 客户端是官方主线。 与 Bedrock Agents 托管线分清楚：Strands 是「拿来自己搭的底座」（本大类），托管线在 automation。 仓现名 harness-sdk（旧名 redirect——直抓核验）。
AWS's open-source agent SDK (Apache-2.0): model-driven loops, decorator-style tools, MCP client support on the official mainline. Keep it apart from the hosted Bedrock Agents line: Strands is a build-it-yourself foundation (this category); the hosted line lives in automation. The repo is now harness-sdk (old name redirects — direct-fetched).
适合与不适合When to use it, when not to
适合：AWS/Bedrock 栈、要显式 MCP 能力、要轻量代码优先 SDK。 不适合：非 AWS 栈默认选型；要可视化编排。
Fits: AWS/Bedrock stacks, explicit MCP capability needs, lightweight code-first SDKs. Not a fit: default choices off AWS; needing visual orchestration.
中文生态China availability 国产 / 国内可直接用 / 备案状态 · 快照domestic / direct access / CAC filing · snapshot 2026-10-21
- 出品属地Origin
- 国外出品foreign-made AWS/Amazon（美国）开源线。AWS/Amazon (US) open-source line.
- 国内使用Direct access
- 大陆可直连direct OK strandsagents.com 直连实测 200（2026-10-21）；GitHub 仓大陆直连波动（同日代理可达）。strandsagents.com measured 200 direct (2026-10-21); the GitHub repo's mainland reachability fluctuates (200 via proxy the same day).
- 备案状态CAC filing
- 未见于备案名单not in filing list：未见于网信办公示名单（2026-10-21 检索）；开源项目未面向大陆公众提供服务，备案不适用。not in the CAC public registry (searched 2026-10-21); the open-source project does not serve the mainland public, so filing does not apply.
备案信息以网信办《生成式人工智能服务已备案信息》公示名单为准（按批次滚动更新，本站只抄编号不解读）；「大陆可直连」是本站从大陆网络直连实测的结果，不是厂商承诺。GitHub 类站点当日实测有波动，口径写在依据里。Filing status is quoted from the CAC public registry (updated batch by batch; this site copies the number and does not interpret it). "Direct access" is this site's own reachability measurement from a mainland network, not a vendor promise. GitHub-hosted sites fluctuated on the measurement day — the note says so.
固定坐标系Fixed coordinate system
8 个维度dimensions, 与同分区其他对象逐项可比each comparable item by item against others in the same section.
- 模型与开放条件Model & openness
多 provider 接入（Bedrock 系为主，兼 Anthropic/OpenAI/LiteLLM 线——以官方文档为准， 未逐条清点）；官方叙事是「model-driven」：agent 循环由模型决定调哪些工具。
Multi-provider access (Bedrock-first, plus Anthropic/OpenAI/LiteLLM lines — per the official docs, not itemized one by one); the official narrative is "model-driven": in the agent loop the model itself decides which tools to call.
- 运行位置Where it runs
Python/TS SDK（装进你的进程）；GitHub 8,997★，最近推送 2026-10-29（API 核验）。 AWS 开源线（官方出品，非托管服务——与 Bedrock Agents 托管线区分）。
Python/TS SDK (installed into your process); GitHub 8,997★, last push 2026-10-29 (API verified). An AWS open-source line (officially produced, not a hosted service — distinct from the Bedrock Agents hosted line).
- 本地文件Local files
库形态跑在你进程里；数据落点由你决定。工具执行（shell/文件类）在你机器上发生—— 权限面跟着你给的工具走。
Library form running inside your process; where data lands is your call. Tool execution (shell/file kinds) happens on your machine — the permissions surface follows the tools you grant.
- 关机后的任务Tasks after shutdown
库无常驻语义；agent 应用常驻与否取决于你的部署。观测线（agent 轨迹导出）在官方文档内。
A library has no resident semantics; whether your agent application stays resident depends on your deployment. The observability line (agent trace export) is in the official docs.
- 工具与扩展Tools & extensions
工具定义极简（装饰器式）；MCP 支持是官方显式面（MCP 客户端集成在文档主线）—— 这是它与多数框架的差异点之一。
Tool definition is minimal (decorator style); MCP support is an explicit official surface (the MCP client integration sits in the docs mainline) — one of its differentiators versus most frameworks.
- 上下文与记忆Context & memory
会话记忆组件在官方模块族内（会话持久化线）；跨会话记忆给接口不给托管。
A session-memory component is in the official module family (the session-persistence line); cross-session memory gives an interface, not hosting.
- 权限与限制Permissions & limits
无账号体系（库形态）；权限面=你接的各家 key + 你注册的工具能力（含 shell 类高危工具—— 官方文档有安全指引线，未逐条核验）。
No account system (library form); the permissions surface = the various vendors' keys you wire in + the tool capabilities you register (including high-risk shell-class tools — the official docs have a security-guidance line, not itemized).
- 适合什么任务Best for
适合：AWS 栈的 agent 开发（Bedrock 一等公民）、要显式 MCP 客户端能力、要轻量 SDK 不要重框架。 不适合：非 AWS 栈的默认选型（生态面比 LangChain 窄）；要可视化编排（它是代码优先）。
Fits: agent development on the AWS stack (Bedrock first-class), wanting explicit MCP client capability, wanting a lightweight SDK rather than a heavy framework. Does not fit: as the default choice outside AWS stacks (the ecosystem is narrower than LangChain's); wanting visual orchestration (it is code-first).
头号误解Top misconception
- 与 Bedrock Agents 托管线混谈——Strands 是开源 SDK（Apache2.0），Bedrock Agents 是托管服务（automation 大类）Blurring it with the hosted Bedrock Agents line — Strands is an open-source SDK (Apache-2.0); Bedrock Agents is a hosted service (automation category)
- 用旧仓名 sdk-python 找仓库——现 redirect 到 harness-sdk（2026-10-21 直抓核验）Using the old repo name sdk-python — it now redirects to harness-sdk (direct-fetched 2026-10-21)
- shell/文件类工具默认在你机器上真执行——注册高危工具前按「agent 能跑命令」设防Shell/file tools really execute on your machine by default — before registering high-risk tools, defend as if 'the agent can run commands'
未知项清单Known unknowns
- provider 全目录（未逐条清点）
- MCP 客户端集成的能力面细节（官方主线存在，未逐条核验）
- 观测/评估线当前完成度（未逐条核验）
- The full provider catalog (not itemized one by one)
- Capability details of the MCP client integration (the mainline exists; not itemized)
- Current completeness of the observability/evaluation line (not itemized)
证据来源Evidence sources
判断可回到以下一手源复核。本站核验日Every judgement can be rechecked against the primary sources below. Verified on 2026-10-30，内容更新日content updated on 2026-10-21。
| 类型Type | 名称Name | 链接Link |
|---|---|---|
| repo | strands-agents/harness-sdk · 仓库（Apache-2.0；8,997★，最近推送 2026-10-29，GitHub API 核验）strands-agents/harness-sdk · repository (Apache-2.0; 8,997★, last push 2026-10-29, GitHub API verified) | https://github.com/strands-agents/harness-sdk |
| docs | Strands Agents · 官方文档Strands Agents · official docs | https://strandsagents.com |
| changelog | strands-agents/harness-sdk · Releases（changelog）strands-agents/harness-sdk · Releases (changelog) | https://github.com/strands-agents/harness-sdk/releases |
实测记录Measured runs
本档未跑集成与性能实测；结论只覆盖 API 与官方文档披露的能力面。
This site has not completed measured runs. The test protocol is at protocols/framework/_protocol.md.
相关条目Related entries
- OpenAI Agents SDKOpenAI Agents SDK同为轻量官方 SDK：OpenAI 版绑自家生态浅，Strands 与 Bedrock 绑得深。 Bedrock Agents / AgentCore（automation 大类，待建档）— 同厂商两线对照：托管 vs 开源 SDK，选型时先分清；建档上线后在此互链。Both lightweight official SDKs: the OpenAI version binds shallowly to its own ecosystem; Strands binds deeply to Bedrock. Bedrock Agents / AgentCore (automation category, dossier pending) — same-vendor two-line contrast: hosted vs open-source SDK; tell them apart first when selecting; cross-link once that dossier goes live.
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本页由This page is generated from the ai-handbook 数据层生成（CC BY 4.0）。data layer (CC BY 4.0).
方法论与坐标系定义见仓库内For the methodology and coordinate definitions, see METHODOLOGY.md.