# @modelcontextprotocol/sdk - Doramagic AI Context Pack

> 定位：安装前体验与判断资产。它帮助宿主 AI 有一个好的开始，但不代表已经安装、执行或验证目标项目。

## 充分原则

- **充分原则，不是压缩原则**：AI Context Pack 应该充分到让宿主 AI 在开工前理解项目价值、能力边界、使用入口、风险和证据来源；它可以分层组织，但不以最短摘要为目标。
- **压缩策略**：只压缩噪声和重复内容，不压缩会影响判断和开工质量的上下文。

## 给宿主 AI 的使用方式

你正在读取 Doramagic 为 @modelcontextprotocol/sdk 编译的 AI Context Pack。请把它当作开工前上下文：帮助用户理解适合谁、能做什么、如何开始、哪些必须安装后验证、风险在哪里。不要声称你已经安装、运行或执行了目标项目。

## Claim 消费规则

- **事实来源**：Repo Evidence + Claim/Evidence Graph；Human Wiki 只提供显著性、术语和叙事结构。
- **事实最低状态**：`supported`
- `supported`：可以作为项目事实使用，但回答中必须引用 claim_id 和证据路径。
- `weak`：只能作为低置信度线索，必须要求用户继续核实。
- `inferred`：只能用于风险提示或待确认问题，不能包装成项目事实。
- `unverified`：不得作为事实使用，应明确说证据不足。
- `contradicted`：必须展示冲突来源，不得替用户强行选择一个版本。

## 它最适合谁

- **想在安装前理解开源项目价值和边界的用户**：当前证据主要来自项目文档。 证据：`README.md` Claim：`clm_0002` supported 0.86

## 它能做什么

- **命令行启动或安装流程**（需要安装后验证）：项目文档中存在可执行命令，真实使用需要在本地或宿主环境中运行这些命令。 证据：`README.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `packages/client/README.md` 等 Claim：`clm_0001` supported 0.86

## 怎么开始

- `npm install @modelcontextprotocol/server` 证据：`README.md` Claim：`clm_0003` supported 0.86, `clm_0009` supported 0.86, `clm_0010` supported 0.86, `clm_0011` supported 0.86 等
- `npm install @modelcontextprotocol/client` 证据：`README.md` Claim：`clm_0004` supported 0.86, `clm_0008` supported 0.86
- `npm install @modelcontextprotocol/node` 证据：`README.md` Claim：`clm_0005` supported 0.86
- `npm install @modelcontextprotocol/express express` 证据：`README.md` Claim：`clm_0006` supported 0.86
- `npm install @modelcontextprotocol/hono hono` 证据：`README.md` Claim：`clm_0007` supported 0.86
- `npm install @modelcontextprotocol/client@alpha` 证据：`packages/client/README.md` Claim：`clm_0008` supported 0.86
- `npm install @modelcontextprotocol/server @modelcontextprotocol/express express` 证据：`packages/middleware/express/README.md` Claim：`clm_0009` supported 0.86
- `npm install @modelcontextprotocol/server @modelcontextprotocol/fastify fastify` 证据：`packages/middleware/fastify/README.md` Claim：`clm_0010` supported 0.86
- `npm install @modelcontextprotocol/server @modelcontextprotocol/hono hono` 证据：`packages/middleware/hono/README.md` Claim：`clm_0011` supported 0.86
- `npm install @modelcontextprotocol/server @modelcontextprotocol/node` 证据：`packages/middleware/node/README.md` Claim：`clm_0012` supported 0.86

## 继续前判断卡

- **当前建议**：需要管理员/安全审批
- **为什么**：继续前可能涉及密钥、账号、外部服务或敏感上下文，建议先经过管理员或安全审批。

### 30 秒判断

- **现在怎么做**：需要管理员/安全审批
- **最小安全下一步**：先跑 Prompt Preview；若涉及凭证或企业环境，先审批再试装
- **先别相信**：角色质量和任务匹配不能直接相信。
- **继续会触碰**：角色选择偏差、命令执行、宿主 AI 配置

### 现在可以相信

- **适合人群线索：想在安装前理解开源项目价值和边界的用户**（supported）：有 supported claim 或项目证据支撑，但仍不等于真实安装效果。 证据：`README.md` Claim：`clm_0002` supported 0.86
- **能力存在：命令行启动或安装流程**（supported）：可以相信项目包含这类能力线索；是否适合你的具体任务仍要试用或安装后验证。 证据：`README.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `packages/client/README.md` 等 Claim：`clm_0001` supported 0.86
- **存在 Quick Start / 安装命令线索**（supported）：可以相信项目文档出现过启动或安装入口；不要因此直接在主力环境运行。 证据：`README.md` Claim：`clm_0003` supported 0.86, `clm_0009` supported 0.86, `clm_0010` supported 0.86, `clm_0011` supported 0.86

### 现在还不能相信

- **角色质量和任务匹配不能直接相信。**（unverified）：角色库证明有很多角色，不证明每个角色都适合你的具体任务，也不证明角色能产生高质量结果。
- **不能把角色文案当成真实执行能力。**（unverified）：安装前只能判断角色描述和任务画像是否匹配，不能证明它能在宿主 AI 里完成任务。
- **真实输出质量不能在安装前相信。**（unverified）：Prompt Preview 只能展示引导方式，不能证明真实项目中的结果质量。
- **宿主 AI 版本兼容性不能在安装前相信。**（unverified）：Claude、Cursor、Codex、Gemini 等宿主加载规则和版本差异必须在真实环境验证。
- **不会污染现有宿主 AI 行为，不能直接相信。**（inferred）：Skill、plugin、AGENTS/CLAUDE/GEMINI 指令可能改变宿主 AI 的默认行为。 证据：`CLAUDE.md`
- **可安全回滚不能默认相信。**（unverified）：除非项目明确提供卸载和恢复说明，否则必须先在隔离环境验证。
- **真实安装后是否与用户当前宿主 AI 版本兼容？**（unverified）：兼容性只能通过实际宿主环境验证。
- **项目输出质量是否满足用户具体任务？**（unverified）：安装前预览只能展示流程和边界，不能替代真实评测。

### 继续会触碰什么

- **角色选择偏差**：用户对任务应该由哪个专家角色处理的判断。 原因：选错角色会让 AI 从错误专业视角回答，浪费时间或误导决策。
- **命令执行**：包管理器、网络下载、本地插件目录、项目配置或用户主目录。 原因：运行第一条命令就可能产生环境改动；必须先判断是否值得跑。 证据：`README.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `packages/client/README.md` 等
- **宿主 AI 配置**：Claude/Codex/Cursor/Gemini/OpenCode 等宿主的 plugin、Skill 或规则加载配置。 原因：宿主配置会改变 AI 后续工作方式，可能和用户已有规则冲突。 证据：`CLAUDE.md`
- **本地环境或项目文件**：安装结果、插件缓存、项目配置或本地依赖目录。 原因：安装前无法证明写入范围和回滚方式，需要隔离验证。 证据：`README.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `packages/client/README.md` 等
- **环境变量 / API Key**：项目入口文档明确出现 API key、token、secret 或账号凭证配置。 原因：如果真实安装需要凭证，应先使用测试凭证并经过权限/合规判断。 证据：`docs/client-quickstart.md`, `examples/client-quickstart/src/index.ts`
- **宿主 AI 上下文**：AI Context Pack、Prompt Preview、Skill 路由、风险规则和项目事实。 原因：导入上下文会影响宿主 AI 后续判断，必须避免把未验证项包装成事实。

### 最小安全下一步

- **先跑 Prompt Preview**：先用交互式试用验证任务画像和角色匹配，不要先导入整套角色库。（适用：任何项目都适用，尤其是输出质量未知时。）
- **只在隔离目录或测试账号试装**：避免安装命令污染主力宿主 AI、真实项目或用户主目录。（适用：存在命令执行、插件配置或本地写入线索时。）
- **先备份宿主 AI 配置**：Skill、plugin、规则文件可能改变 Claude/Cursor/Codex 的默认行为。（适用：存在插件 manifest、Skill 或宿主规则入口时。）
- **不要使用真实生产凭证**：环境变量/API key 一旦进入宿主或工具链，可能产生账号和合规风险。（适用：出现 API、TOKEN、KEY、SECRET 等环境线索时。）
- **安装后只验证一个最小任务**：先验证加载、兼容、输出质量和回滚，再决定是否深用。（适用：准备从试用进入真实工作流时。）

### 退出方式

- **保留安装前状态**：记录原始宿主配置和项目状态，后续才能判断是否可恢复。
- **准备移除宿主 plugin / Skill / 规则入口**：如果试装后行为异常，可以把宿主 AI 恢复到试装前状态。
- **保留原始角色选择记录**：如果输出偏题，可以回到任务画像阶段重新选择角色，而不是继续沿着错误角色推进。
- **记录安装命令和写入路径**：没有明确卸载说明时，至少要知道哪些目录或配置需要手动清理。
- **准备撤销测试 API key 或 token**：测试凭证泄露或误用时，可以快速止损。
- **如果没有回滚路径，不进入主力环境**：不可回滚是继续前阻断项，不应靠信任或运气继续。

## 哪些只能预览

- 解释项目适合谁和能做什么
- 基于项目文档演示典型对话流程
- 帮助用户判断是否值得安装或继续研究

## 哪些必须安装后验证

- 真实安装 Skill、插件或 CLI
- 执行脚本、修改本地文件或访问外部服务
- 验证真实输出质量、性能和兼容性

## 边界与风险判断卡

- **把安装前预览误认为真实运行**：用户可能高估项目已经完成的配置、权限和兼容性验证。 处理方式：明确区分 prompt_preview_can_do 与 runtime_required。 Claim：`clm_0017` inferred 0.45
- **命令执行会修改本地环境**：安装命令可能写入用户主目录、宿主插件目录或项目配置。 处理方式：先在隔离环境或测试账号中运行。 证据：`README.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `packages/client/README.md` 等 Claim：`clm_0018` supported 0.86
- **待确认**：真实安装后是否与用户当前宿主 AI 版本兼容？。原因：兼容性只能通过实际宿主环境验证。
- **待确认**：项目输出质量是否满足用户具体任务？。原因：安装前预览只能展示流程和边界，不能替代真实评测。
- **待确认**：安装命令是否需要网络、权限或全局写入？。原因：这影响企业环境和个人环境的安装风险。

## 开工前工作上下文

### 加载顺序

- 先读取 how_to_use.host_ai_instruction，建立安装前判断资产的边界。
- 读取 claim_graph_summary，确认事实来自 Claim/Evidence Graph，而不是 Human Wiki 叙事。
- 再读取 intended_users、capabilities 和 quick_start_candidates，判断用户是否匹配。
- 需要执行具体任务时，优先查 role_skill_index，再查 evidence_index。
- 遇到真实安装、文件修改、网络访问、性能或兼容性问题时，转入 risk_card 和 boundaries.runtime_required。

### 任务路由

- **命令行启动或安装流程**：先说明这是安装后验证能力，再给出安装前检查清单。 边界：必须真实安装或运行后验证。 证据：`README.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `packages/client/README.md` 等 Claim：`clm_0001` supported 0.86

### 上下文规模

- 文件总数：422
- 重要文件覆盖：40/422
- 证据索引条目：80
- 角色 / Skill 条目：60

### 证据不足时的处理

- **missing_evidence**：说明证据不足，要求用户提供目标文件、README 段落或安装后验证记录；不要补全事实。
- **out_of_scope_request**：说明该任务超出当前 AI Context Pack 证据范围，并建议用户先查看 Human Manual 或真实安装后验证。
- **runtime_request**：给出安装前检查清单和命令来源，但不要替用户执行命令或声称已执行。
- **source_conflict**：同时展示冲突来源，标记为待核实，不要强行选择一个版本。

## Prompt Recipes

### 适配判断

- 目标：判断这个项目是否适合用户当前任务。
- 预期输出：适配结论、关键理由、证据引用、安装前可预览内容、必须安装后验证内容、下一步建议。

```text
请基于 @modelcontextprotocol/sdk 的 AI Context Pack，先问我 3 个必要问题，然后判断它是否适合我的任务。回答必须包含：适合谁、能做什么、不能做什么、是否值得安装、证据来自哪里。所有项目事实必须引用 evidence_refs、source_paths 或 claim_id。
```

### 安装前体验

- 目标：让用户在安装前感受核心工作流，同时避免把预览包装成真实能力或营销承诺。
- 预期输出：一段带边界标签的体验剧本、安装后验证清单和谨慎建议；不含真实运行承诺或强营销表述。

```text
请把 @modelcontextprotocol/sdk 当作安装前体验资产，而不是已安装工具或真实运行环境。

请严格输出四段：
1. 先问我 3 个必要问题。
2. 给出一段“体验剧本”：用 [安装前可预览]、[必须安装后验证]、[证据不足] 三种标签展示它可能如何引导工作流。
3. 给出安装后验证清单：列出哪些能力只有真实安装、真实宿主加载、真实项目运行后才能确认。
4. 给出谨慎建议：只能说“值得继续研究/试装”“先补充信息后再判断”或“不建议继续”，不得替项目背书。

硬性边界：
- 不要声称已经安装、运行、执行测试、修改文件或产生真实结果。
- 不要写“自动适配”“确保通过”“完美适配”“强烈建议安装”等承诺性表达。
- 如果描述安装后的工作方式，必须使用“如果安装成功且宿主正确加载 Skill，它可能会……”这种条件句。
- 体验剧本只能写成“示例台词/假设流程”：使用“可能会询问/可能会建议/可能会展示”，不要写“已写入、已生成、已通过、正在运行、正在生成”。
- Prompt Preview 不负责给安装命令；如用户准备试装，只能提示先阅读 Quick Start 和 Risk Card，并在隔离环境验证。
- 所有项目事实必须来自 supported claim、evidence_refs 或 source_paths；inferred/unverified 只能作风险或待确认项。

```

### 角色 / Skill 选择

- 目标：从项目里的角色或 Skill 中挑选最匹配的资产。
- 预期输出：候选角色或 Skill 列表，每项包含适用场景、证据路径、风险边界和是否需要安装后验证。

```text
请读取 role_skill_index，根据我的目标任务推荐 3-5 个最相关的角色或 Skill。每个推荐都要说明适用场景、可能输出、风险边界和 evidence_refs。
```

### 风险预检

- 目标：安装或引入前识别环境、权限、规则冲突和质量风险。
- 预期输出：环境、权限、依赖、许可、宿主冲突、质量风险和未知项的检查清单。

```text
请基于 risk_card、boundaries 和 quick_start_candidates，给我一份安装前风险预检清单。不要替我执行命令，只说明我应该检查什么、为什么检查、失败会有什么影响。
```

### 宿主 AI 开工指令

- 目标：把项目上下文转成一次对话开始前的宿主 AI 指令。
- 预期输出：一段边界明确、证据引用明确、适合复制给宿主 AI 的开工前指令。

```text
请基于 @modelcontextprotocol/sdk 的 AI Context Pack，生成一段我可以粘贴给宿主 AI 的开工前指令。这段指令必须遵守 not_runtime=true，不能声称项目已经安装、运行或产生真实结果。
```


## 角色 / Skill 索引

- 共索引 60 个角色 / Skill / 项目文档条目。

- **Changesets**（project_doc）：Hello and welcome! This folder has been automatically generated by @changesets/cli , a build tool that works with multi-package repos, or single-package repos to help you version and publish your code. You can find the full documentation for it in our repository https://github.com/changesets/changesets 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/README.md`
- **CLAUDE.md**（project_doc）：This file provides guidance to Claude Code claude.ai/code when working with code in this repository. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`CLAUDE.md`
- **MCP TypeScript SDK**（project_doc）：!IMPORTANT This is the main branch which contains v2 of the SDK currently in development, pre-alpha . We anticipate a stable v2 release in Q1 2026. Until then, v1.x remains the recommended version for production use. v1.x will continue to receive bug fixes and security updates for at least 6 months after v2 ships to give people time to upgrade. For v1 documentation, see the V1 API docs https://ts.sdk.modelcontextpro… 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`README.md`
- **MCP TypeScript SDK Examples Client**（project_doc）：This directory contains runnable MCP client examples built with @modelcontextprotocol/client . 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`examples/client/README.md`
- **MCP TypeScript SDK Examples Server**（project_doc）：This directory contains runnable MCP server examples built with @modelcontextprotocol/server plus framework adapters: 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`examples/server/README.md`
- **@modelcontextprotocol/client**（project_doc）：The MCP Model Context Protocol TypeScript client SDK. Build MCP clients that connect to MCP servers. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/client/README.md`
- **Middleware packages**（project_doc）：The packages in packages/middleware/ are thin integration layers that help you expose an MCP server in a specific runtime, platform, or web framework. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/middleware/README.md`
- **@modelcontextprotocol/express**（project_doc）：Express adapters for the MCP TypeScript server SDK. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/middleware/express/README.md`
- **@modelcontextprotocol/fastify**（project_doc）：Fastify adapters for the MCP TypeScript server SDK. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/middleware/fastify/README.md`
- **@modelcontextprotocol/hono**（project_doc）：Hono adapters for the MCP TypeScript server SDK. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/middleware/hono/README.md`
- **@modelcontextprotocol/node**（project_doc）：Node.js adapters for the MCP TypeScript server SDK. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/middleware/node/README.md`
- **@modelcontextprotocol/server**（project_doc）：The MCP Model Context Protocol TypeScript server SDK. Build MCP servers that expose tools, resources, and prompts. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`packages/server/README.md`
- **Conformance Tests**（project_doc）：This directory contains conformance test implementations for the TypeScript MCP SDK. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`test/conformance/README.md`
- **Contributing to MCP TypeScript SDK**（project_doc）：Welcome, and thanks for your interest in contributing! We're glad you're here. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`CONTRIBUTING.md`
- **Quickstart: Build an LLM-powered chatbot**（project_doc）：Quickstart: Build an LLM-powered chatbot 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/client-quickstart.md`
- **Building MCP clients**（project_doc）：This guide covers the TypeScript SDK APIs for building MCP clients. For protocol-level concepts, see the MCP overview https://modelcontextprotocol.io/docs/learn/architecture . 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/client.md`
- **Documents**（project_doc）：- Server Quickstart ./server-quickstart.md – build a weather server from scratch and connect it to VS Code - Server ./server.md – building MCP servers: transports, tools, resources, prompts, server-initiated requests, and deployment - Client Quickstart ./client-quickstart.md – build an LLM-powered chatbot that connects to an MCP server and calls its tools - Client ./client.md – building MCP clients: connecting, tool… 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/documents.md`
- **FAQ**（project_doc）：- General general - Clients clients - Servers servers - v1 legacy v1-legacy 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/faq.md`
- **migrate-v1-to-v2**（project_doc）：Migrate MCP TypeScript SDK code from v1 @modelcontextprotocol/sdk to v2 @modelcontextprotocol/core, /client, /server . Use when a user asks to migrate, upgrade, or port their MCP TypeScript code from v1 to v2. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/migration-SKILL.md`
- **Migration Guide: v1 to v2**（project_doc）：This guide covers the breaking changes introduced in v2 of the MCP TypeScript SDK and how to update your code. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/migration.md`
- **Quickstart: Build a weather server**（project_doc）：In this tutorial, we'll build a simple MCP weather server and connect it to a host. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/server-quickstart.md`
- **Building MCP servers**（project_doc）：This guide covers the TypeScript SDK APIs for building MCP servers. For protocol-level concepts — what tools, resources, and prompts are and when to use each — see the MCP overview https://modelcontextprotocol.io/docs/learn/architecture . 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`docs/server.md`
- **Abort Handlers On Close**（project_doc）：Abort in-flight request handlers when the connection closes. Previously, request handlers would continue running after the transport disconnected, wasting resources and preventing proper cleanup. Also fixes InMemoryTransport.close firing onclose twice on the initiating side. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/abort-handlers-on-close.md`
- **Add Fastify Middleware**（project_doc）：Add Fastify middleware adapter for MCP servers, following the same pattern as the Express and Hono adapters. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/add-fastify-middleware.md`
- **Add Hono Peer Dep**（project_doc）：Add missing hono peer dependency to @modelcontextprotocol/node . The package already depends on @hono/node-server which requires hono at runtime, but hono was only listed in the workspace root, not as a peer dependency of the package itself. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/add-hono-peer-dep.md`
- **Add Resource Size Field**（project_doc）：Add missing size field to ResourceSchema to match the MCP specification 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/add-resource-size-field.md`
- **Brave Lions Glow**（project_doc）：Prevent Hono from overriding global Response object by passing overrideGlobalObjects: false to getRequestListener . This fixes compatibility with frameworks like Next.js whose response classes extend the native Response. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/brave-lions-glow.md`
- **Busy Rice Smoke**（project_doc）：tasks - disallow requesting a null TTL 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/busy-rice-smoke.md`
- **Busy Weeks Hang**（project_doc）：Fix ReDoS vulnerability in UriTemplate regex patterns CVE-2026-0621 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/busy-weeks-hang.md`
- **Cfworker Out Of Barrel**（project_doc）：Stop bundling @cfworker/json-schema into the main package barrel. Previously CfWorkerJsonSchemaValidator was re-exported from the core internal barrel, so tsdown inlined the @cfworker/json-schema dev dependency into every consumer's bundle even when it was never used. The validator is now reachable only via the shims conditional workerd/browser and the explicit @modelcontextprotocol/{server,client}/validators/cf-wor… 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/cfworker-out-of-barrel.md`
- **Custom Methods Minimal**（project_doc）：Add custom non-spec method support: a 3-arg setRequestHandler method, schemas, handler / setNotificationHandler method, schemas, handler form for vendor-prefixed methods, and a request req, resultSchema overload also on ctx.mcpReq.send for typed custom-method results. Spec-method calls are unchanged. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/custom-methods-minimal.md`
- **Cyan Cycles Pump**（project_doc）：missing change for fix client : replace body.cancel with text to prevent hanging 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/cyan-cycles-pump.md`
- **Drop Zod Peer Dep**（project_doc）：Drop zod from peerDependencies kept as direct dependency 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/drop-zod-peer-dep.md`
- **Export Inmemory Transport**（project_doc）：Export InMemoryTransport for in-process testing. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/export-inmemory-transport.md`
- **Expose Auth Server Discovery**（project_doc）：Add discoverOAuthServerInfo function and unified discovery state caching for OAuth 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/expose-auth-server-discovery.md`
- **Express Resource Server Auth**（project_doc）：Add OAuth Resource-Server glue to the Express adapter: requireBearerAuth middleware token verification + RFC 6750 WWW-Authenticate challenges , mcpAuthMetadataRouter serves RFC 9728 Protected Resource Metadata and mirrors RFC 8414 AS metadata at the resource origin , the getOAuthProtectedResourceMetadataUrl helper, and the OAuthTokenVerifier interface. These restore the v1 src/server/auth Resource-Server pieces as f… 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/express-resource-server-auth.md`
- **Extract Task Manager**（project_doc）：refactor: extract task orchestration from Protocol into TaskManager 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/extract-task-manager.md`
- **Fast Dragons Lead**（project_doc）： 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fast-dragons-lead.md`
- **Finish Sdkerror Capability**（project_doc）：Convert remaining capability-assertion throws to SdkError SdkErrorCode.CapabilityNotSupported, ... . Follow-up to 1454 which missed Client.assertCapability , the task capability helpers in experimental/tasks/helpers.ts , and the sampling/elicitation capability checks in experimental/tasks/server.ts . 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/finish-sdkerror-capability.md`
- **Fix Abort Listener Leak**（project_doc）：Consolidate per-request cleanup in requestWithSchema into a single .finally block. This fixes an abort signal listener leak listeners accumulated when a caller reused one AbortSignal across requests and two cases where responseHandlers entries leaked on send-failure paths. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-abort-listener-leak.md`
- **Fix Failed Task Result Retrieval**（project_doc）：Fix requestStream to call tasks/result for failed tasks instead of yielding a hardcoded ProtocolError . When a task reaches the failed terminal status, the stream now retrieves and yields the actual stored result matching the behavior for completed tasks , as required by the spec. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-failed-task-result-retrieval.md`
- **Fix Oauth 5Xx Discovery**（project_doc）：Continue OAuth metadata discovery on 502 Bad Gateway responses, matching the existing behavior for 4xx. This fixes MCP servers behind reverse proxies that return 502 for path-aware metadata URLs. Other 5xx errors still throw to avoid retrying against overloaded servers. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-oauth-5xx-discovery.md`
- **Fix Onerror Callbacks**（project_doc）：Fix transport errors being silently swallowed by adding missing onerror callback invocations before all createJsonErrorResponse calls in WebStandardStreamableHTTPServerTransport . This ensures errors like parse failures, invalid headers, and session validation errors are properly reported via the onerror callback. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-onerror-callbacks.md`
- **Fix Server Protocol Version**（project_doc）：fix server : propagate negotiated protocol version to transport in oninitialize 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-server-protocol-version.md`
- **Fix Session Status Codes**（project_doc）：Example servers now return HTTP 404 not 400 when a request includes an unknown session ID, so clients can correctly detect they need to start a new session. Requests missing a session ID entirely still return 400. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-session-status-codes.md`
- **Fix Stdio Epipe Crash**（project_doc）：Handle stdout errors e.g. EPIPE in StdioServerTransport gracefully instead of crashing. When the client disconnects abruptly, the transport now catches the stdout error, surfaces it via onerror , and closes. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-stdio-epipe-crash.md`
- **Fix Stdio Windows Hide**（project_doc）：Always set windowsHide when spawning stdio server processes on Windows, not just in Electron environments. Prevents unwanted console windows in non-Electron Windows applications. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-stdio-windows-hide.md`
- **Fix Streamable Close Reentrant**（project_doc）：Prevent stack overflow in StreamableHTTPServerTransport.close with re-entrant guard 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-streamable-close-reentrant.md`
- **Fix Streamable Http Error Response**（project_doc）：Fix StreamableHTTPClientTransport to handle error responses in SSE streams 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-streamable-http-error-response.md`
- **Fix Task Session Isolation**（project_doc）：Fix InMemoryTaskStore to enforce session isolation. Previously, sessionId was accepted but ignored on all TaskStore methods, allowing any session to enumerate, read, and mutate tasks created by other sessions. The store now persists sessionId at creation time and enforces ownership on all reads and writes. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-task-session-isolation.md`
- **Fix Transport Exact Optional Property Types**（project_doc）：Add explicit undefined to optional properties on the Transport interface and TransportSendOptions onclose , onerror , onmessage , sessionId , setProtocolVersion , setSupportedProtocolVersions , onresumptiontoken . 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-transport-exact-optional-property-types.md`
- **Fix Unknown Tool Protocol Error**（project_doc）：Fix error handling for unknown tools and resources per MCP spec. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-unknown-tool-protocol-error.md`
- **Fix Validate Client Metadata Url**（project_doc）：Add validateClientMetadataUrl utility for early validation of clientMetadataUrl 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/fix-validate-client-metadata-url.md`
- **Funky Baths Attack**（project_doc）：remove deprecated .tool, .prompt, .resource method signatures 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/funky-baths-attack.md`
- **Gentle Planets Rest**（project_doc）：Add undefined to optional callback and function properties on WebStandardStreamableHTTPServerTransportOptions sessionIdGenerator , onsessioninitialized , onsessionclosed and corresponding private fields. 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/gentle-planets-rest.md`
- **Heavy Walls Swim**（project_doc）：reverting application/json in notifications 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/heavy-walls-swim.md`
- **Hono Peer Optional**（project_doc）：Mark hono peer dependency as optional. @modelcontextprotocol/node only uses getRequestListener from @hono/node-server Node HTTP ↔ Web Standard conversion , which does not require the hono framework at runtime. Consumers no longer need to install hono to use NodeStreamableHTTPServerTransport . Note: @hono/node-server itself still declares hono as a hard peer, so package managers may emit a warning; this is upstream a… 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/hono-peer-optional.md`
- **Legacy Module Resolution Types**（project_doc）：Add top-level types field and typesVersions on client/server for their subpath exports so consumers on legacy moduleResolution: "node" can resolve type declarations. The exports map remains the source of truth for nodenext / bundler resolution. The typesVersions map includes entries for subpaths added by sibling PRs in this series zod-schemas , stdio ; those entries are no-ops until the corresponding dist/ .d.mts fi… 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/legacy-module-resolution-types.md`
- **Oauth Error Http200**（project_doc）：Fix OAuth error handling for servers returning errors with HTTP 200 status 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/oauth-error-http200.md`
- **Odd Forks Enjoy**（project_doc）：fix client : append custom Accept headers to spec-required defaults in StreamableHTTPClientTransport 激活提示：当用户需要理解项目结构、安装方式或边界时参考。 证据：`.changeset/odd-forks-enjoy.md`

## 证据索引

- 共索引 80 条证据。

- **Changesets**（documentation）：Hello and welcome! This folder has been automatically generated by @changesets/cli , a build tool that works with multi-package repos, or single-package repos to help you version and publish your code. You can find the full documentation for it in our repository https://github.com/changesets/changesets 证据：`.changeset/README.md`
- **CLAUDE.md**（documentation）：This file provides guidance to Claude Code claude.ai/code when working with code in this repository. 证据：`CLAUDE.md`
- **MCP TypeScript SDK**（documentation）：!IMPORTANT This is the main branch which contains v2 of the SDK currently in development, pre-alpha . We anticipate a stable v2 release in Q1 2026. Until then, v1.x remains the recommended version for production use. v1.x will continue to receive bug fixes and security updates for at least 6 months after v2 ships to give people time to upgrade. For v1 documentation, see the V1 API docs https://ts.sdk.modelcontextprotocol.io/ . For v2 API docs, see /v2/ https://ts.sdk.modelcontextprotocol.io/v2/ . 证据：`README.md`
- **MCP TypeScript SDK Examples Client**（documentation）：This directory contains runnable MCP client examples built with @modelcontextprotocol/client . 证据：`examples/client/README.md`
- **MCP TypeScript SDK Examples Server**（documentation）：This directory contains runnable MCP server examples built with @modelcontextprotocol/server plus framework adapters: 证据：`examples/server/README.md`
- **@modelcontextprotocol/client**（documentation）：The MCP Model Context Protocol TypeScript client SDK. Build MCP clients that connect to MCP servers. 证据：`packages/client/README.md`
- **Middleware packages**（documentation）：The packages in packages/middleware/ are thin integration layers that help you expose an MCP server in a specific runtime, platform, or web framework. 证据：`packages/middleware/README.md`
- **@modelcontextprotocol/express**（documentation）：Express adapters for the MCP TypeScript server SDK. 证据：`packages/middleware/express/README.md`
- **@modelcontextprotocol/fastify**（documentation）：Fastify adapters for the MCP TypeScript server SDK. 证据：`packages/middleware/fastify/README.md`
- **@modelcontextprotocol/hono**（documentation）：Hono adapters for the MCP TypeScript server SDK. 证据：`packages/middleware/hono/README.md`
- **@modelcontextprotocol/node**（documentation）：Node.js adapters for the MCP TypeScript server SDK. 证据：`packages/middleware/node/README.md`
- **@modelcontextprotocol/server**（documentation）：The MCP Model Context Protocol TypeScript server SDK. Build MCP servers that expose tools, resources, and prompts. 证据：`packages/server/README.md`
- **Conformance Tests**（documentation）：This directory contains conformance test implementations for the TypeScript MCP SDK. 证据：`test/conformance/README.md`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/sdk", "private": true, "version": "2.0.0-alpha.0", "description": "Model Context Protocol implementation for TypeScript", "license": "SEE LICENSE IN LICENSE", "author": "Model Context Protocol a Series of LF Projects, LLC.", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "packageManager": "pnpm@10.26.1", "keywords": "modelcontextprotocol", "mcp" , "scripts": { "fetch:spec-types": "tsx scripts/fetch-spec-types.ts", "sync:snippets": "ts… 证据：`package.json`
- **Contributing to MCP TypeScript SDK**（documentation）：Welcome, and thanks for your interest in contributing! We're glad you're here. 证据：`CONTRIBUTING.md`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/eslint-config", "private": true, "main": "eslint.config.mjs", "type": "module", "exports": { ".": "./eslint.config.mjs" }, "dependencies": { "typescript": "catalog:devTools" }, "repository": { "type": "git", "url": "https://github.com/modelcontextprotocol/typescript-sdk.git" }, "bugs": { "url": "https://github.com/modelcontextprotocol/typescript-sdk/issues" }, "homepage": "https://github.com/modelcontextprotocol/typescript-sdk/tree/develop/common/eslint-config", "publishConfig": { "registry": "https://npm.pkg.github.com/" }, "version": "2.0.0", "devDependencies": { "@eslint/js": "catalog:devTools", "eslint": "catalog:devTools", "eslint-config-prettier": "cat… 证据：`common/eslint-config/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/tsconfig", "private": true, "main": "tsconfig.json", "type": "module", "dependencies": { "typescript": "catalog:devTools" }, "repository": { "type": "git", "url": "https://github.com/modelcontextprotocol/typescript-sdk.git" }, "bugs": { "url": "https://github.com/modelcontextprotocol/typescript-sdk/issues" }, "homepage": "https://github.com/modelcontextprotocol/typescript-sdk/tree/develop/common/ts-config", "publishConfig": { "registry": "https://npm.pkg.github.com/" }, "version": "2.0.0" } 证据：`common/tsconfig/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/vitest-config", "private": true, "main": "vitest.config.mjs", "type": "module", "exports": { ".": "./vitest.config.js" }, "dependencies": { "typescript": "catalog:devTools" }, "repository": { "type": "git", "url": "https://github.com/modelcontextprotocol/typescript-sdk.git" }, "bugs": { "url": "https://github.com/modelcontextprotocol/typescript-sdk/issues" }, "homepage": "https://github.com/modelcontextprotocol/typescript-sdk/tree/develop/common/vitest-config", "publishConfig": { "registry": "https://npm.pkg.github.com/" }, "version": "2.0.0", "devDependencies": { "@modelcontextprotocol/tsconfig": "workspace:^", "vite-tsconfig-paths": "catalog:devTools" } } 证据：`common/vitest-config/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/examples-client-quickstart", "private": true, "version": "2.0.0-alpha.0", "type": "module", "bin": { "mcp-client-cli": "./build/index.js" }, "scripts": { "build": "tsc", "typecheck": "tsc --noEmit" }, "dependencies": { "@anthropic-ai/sdk": "^0.74.0", "@modelcontextprotocol/client": "workspace:^" }, "devDependencies": { "@types/node": "^24.10.1", "typescript": "catalog:devTools" } } 证据：`examples/client-quickstart/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/examples-client", "private": true, "version": "2.0.0-alpha.0", "description": "Model Context Protocol implementation for TypeScript", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp" , "scripts": { "typecheck": "tsgo -p tsconfig.json --noEmit", "build": "tsdown", "build:watch": "tsdown --watch", "prepack": "pnpm run build:esm &… 证据：`examples/client/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/examples-server-quickstart", "private": true, "version": "2.0.0-alpha.0", "type": "module", "bin": { "weather": "./build/index.js" }, "scripts": { "build": "tsc", "typecheck": "tsc --noEmit" }, "dependencies": { "@modelcontextprotocol/server": "workspace:^", "zod": "catalog:runtimeShared" }, "devDependencies": { "@types/node": "^24.10.1", "typescript": "catalog:devTools" } } 证据：`examples/server-quickstart/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/examples-server", "private": true, "version": "2.0.0-alpha.0", "description": "Model Context Protocol implementation for TypeScript", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp" , "scripts": { "typecheck": "tsgo -p tsconfig.json --noEmit", "build": "tsdown", "build:watch": "tsdown --watch", "prepack": "pnpm run build:esm &… 证据：`examples/server/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/examples-shared", "private": true, "version": "2.0.0-alpha.0", "description": "Model Context Protocol implementation for TypeScript", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp" , "scripts": { "typecheck": "tsgo -p tsconfig.json --noEmit", "prepack": "pnpm run build:esm && pnpm run build:cjs", "lint": "eslint src/ && prett… 证据：`examples/shared/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/client", "version": "2.0.0-alpha.2", "description": "Model Context Protocol implementation for TypeScript - Client package", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "client" , "exports": { ".": { "types": "./dist/index.d.mts", "import": "./dist/index.mjs" }, "./stdio": { "types": "./dist/stdio.d.mts", "import": "./dis… 证据：`packages/client/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/core", "private": true, "version": "2.0.0-alpha.1", "description": "Model Context Protocol implementation for TypeScript - Core package", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "core" , "exports": { ".": { "types": "./dist/index.d.ts", "import": "./dist/index.mjs" }, "./types": { "types": "./src/exports/types/index.t… 证据：`packages/core/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/express", "private": false, "version": "2.0.0-alpha.2", "description": "Express adapters for the Model Context Protocol TypeScript server SDK - Express middleware", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "express", "middleware" , "exports": { ".": { "types": "./dist/index.d.mts", "import": "./dist/index.mjs" } }, "ty… 证据：`packages/middleware/express/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/fastify", "private": false, "version": "2.0.0-alpha.2", "description": "Fastify adapters for the Model Context Protocol TypeScript server SDK - Fastify middleware", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "fastify", "middleware" , "exports": { ".": { "types": "./dist/index.d.mts", "import": "./dist/index.mjs" } }, "ty… 证据：`packages/middleware/fastify/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/hono", "private": false, "version": "2.0.0-alpha.2", "description": "Hono adapters for the Model Context Protocol TypeScript server SDK - Hono middleware", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "hono", "middleware" , "exports": { ".": { "types": "./dist/index.d.mts", "import": "./dist/index.mjs" } }, "types": "./dis… 证据：`packages/middleware/hono/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/node", "version": "2.0.0-alpha.2", "description": "Model Context Protocol implementation for TypeScript - Node.js middleware", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "node.js", "middleware" , "exports": { ".": { "types": "./dist/index.d.mts", "import": "./dist/index.mjs" } }, "types": "./dist/index.d.mts", "typesVers… 证据：`packages/middleware/node/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/server", "version": "2.0.0-alpha.2", "description": "Model Context Protocol implementation for TypeScript - Server package", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20" }, "keywords": "modelcontextprotocol", "mcp", "server" , "exports": { ".": { "types": "./dist/index.d.mts", "import": "./dist/index.mjs" }, "./stdio": { "types": "./dist/stdio.d.mts", "import": "./dis… 证据：`packages/server/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/test-conformance", "private": true, "version": "2.0.0-alpha.0", "description": "Model Context Protocol implementation for TypeScript", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20", "pnpm": " =10.24.0" }, "packageManager": "pnpm@10.24.0", "keywords": "modelcontextprotocol", "mcp" , "scripts": { "lint": "eslint src/ && prettier --ignore-path ../../.prettierignore --chec… 证据：`test/conformance/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/test-helpers", "private": true, "version": "2.0.0-alpha.0", "description": "Model Context Protocol implementation for TypeScript", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20", "pnpm": " =10.24.0" }, "packageManager": "pnpm@10.24.0", "keywords": "modelcontextprotocol", "mcp" , "scripts": { "lint": "eslint src/ && prettier --ignore-path ../../.prettierignore --check ."… 证据：`test/helpers/package.json`
- **Package**（package_manifest）：{ "name": "@modelcontextprotocol/test-integration", "private": true, "version": "2.0.0-alpha.1", "description": "Model Context Protocol implementation for TypeScript", "license": "MIT", "author": "Anthropic, PBC https://anthropic.com ", "homepage": "https://modelcontextprotocol.io", "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues", "type": "module", "repository": { "type": "git", "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git" }, "engines": { "node": " =20", "pnpm": " =10.24.0" }, "packageManager": "pnpm@10.24.0", "keywords": "modelcontextprotocol", "mcp" , "scripts": { "lint": "eslint test/ && prettier --ignore-path ../../.prettierignore --che… 证据：`test/integration/package.json`
- **License**（source_file）：The MCP project is undergoing a licensing transition from the MIT License to the Apache License, Version 2.0 "Apache-2.0" . All new code and specification contributions to the project are licensed under Apache-2.0. Documentation contributions excluding specifications are licensed under CC-BY-4.0. 证据：`LICENSE`
- **Quickstart: Build an LLM-powered chatbot**（documentation）：Quickstart: Build an LLM-powered chatbot 证据：`docs/client-quickstart.md`
- **Building MCP clients**（documentation）：This guide covers the TypeScript SDK APIs for building MCP clients. For protocol-level concepts, see the MCP overview https://modelcontextprotocol.io/docs/learn/architecture . 证据：`docs/client.md`
- **Documents**（documentation）：- Server Quickstart ./server-quickstart.md – build a weather server from scratch and connect it to VS Code - Server ./server.md – building MCP servers: transports, tools, resources, prompts, server-initiated requests, and deployment - Client Quickstart ./client-quickstart.md – build an LLM-powered chatbot that connects to an MCP server and calls its tools - Client ./client.md – building MCP clients: connecting, tools, resources, prompts, server-initiated requests, and error handling - FAQ ./faq.md – frequently asked questions and troubleshooting 证据：`docs/documents.md`
- **FAQ**（documentation）：- General general - Clients clients - Servers servers - v1 legacy v1-legacy 证据：`docs/faq.md`
- **MCP TypeScript SDK: v1 → v2 Migration**（skill_instruction）：MCP TypeScript SDK: v1 → v2 Migration 证据：`docs/migration-SKILL.md`
- **Migration Guide: v1 to v2**（documentation）：This guide covers the breaking changes introduced in v2 of the MCP TypeScript SDK and how to update your code. 证据：`docs/migration.md`
- **Quickstart: Build a weather server**（documentation）：In this tutorial, we'll build a simple MCP weather server and connect it to a host. 证据：`docs/server-quickstart.md`
- **Building MCP servers**（documentation）：This guide covers the TypeScript SDK APIs for building MCP servers. For protocol-level concepts — what tools, resources, and prompts are and when to use each — see the MCP overview https://modelcontextprotocol.io/docs/learn/architecture . 证据：`docs/server.md`
- **Abort Handlers On Close**（documentation）：Abort in-flight request handlers when the connection closes. Previously, request handlers would continue running after the transport disconnected, wasting resources and preventing proper cleanup. Also fixes InMemoryTransport.close firing onclose twice on the initiating side. 证据：`.changeset/abort-handlers-on-close.md`
- **Add Fastify Middleware**（documentation）：Add Fastify middleware adapter for MCP servers, following the same pattern as the Express and Hono adapters. 证据：`.changeset/add-fastify-middleware.md`
- **Add Hono Peer Dep**（documentation）：Add missing hono peer dependency to @modelcontextprotocol/node . The package already depends on @hono/node-server which requires hono at runtime, but hono was only listed in the workspace root, not as a peer dependency of the package itself. 证据：`.changeset/add-hono-peer-dep.md`
- **Add Resource Size Field**（documentation）：Add missing size field to ResourceSchema to match the MCP specification 证据：`.changeset/add-resource-size-field.md`
- **Brave Lions Glow**（documentation）：Prevent Hono from overriding global Response object by passing overrideGlobalObjects: false to getRequestListener . This fixes compatibility with frameworks like Next.js whose response classes extend the native Response. 证据：`.changeset/brave-lions-glow.md`
- **Busy Rice Smoke**（documentation）：tasks - disallow requesting a null TTL 证据：`.changeset/busy-rice-smoke.md`
- **Busy Weeks Hang**（documentation）：Fix ReDoS vulnerability in UriTemplate regex patterns CVE-2026-0621 证据：`.changeset/busy-weeks-hang.md`
- **Cfworker Out Of Barrel**（documentation）：Stop bundling @cfworker/json-schema into the main package barrel. Previously CfWorkerJsonSchemaValidator was re-exported from the core internal barrel, so tsdown inlined the @cfworker/json-schema dev dependency into every consumer's bundle even when it was never used. The validator is now reachable only via the shims conditional workerd/browser and the explicit @modelcontextprotocol/{server,client}/validators/cf-worker subpath, so consumers that don't opt into it no longer ship that code. No public API change. 证据：`.changeset/cfworker-out-of-barrel.md`
- **Custom Methods Minimal**（documentation）：Add custom non-spec method support: a 3-arg setRequestHandler method, schemas, handler / setNotificationHandler method, schemas, handler form for vendor-prefixed methods, and a request req, resultSchema overload also on ctx.mcpReq.send for typed custom-method results. Spec-method calls are unchanged. 证据：`.changeset/custom-methods-minimal.md`
- **Cyan Cycles Pump**（documentation）：missing change for fix client : replace body.cancel with text to prevent hanging 证据：`.changeset/cyan-cycles-pump.md`
- **Drop Zod Peer Dep**（documentation）：Drop zod from peerDependencies kept as direct dependency 证据：`.changeset/drop-zod-peer-dep.md`
- **Export Inmemory Transport**（documentation）：Export InMemoryTransport for in-process testing. 证据：`.changeset/export-inmemory-transport.md`
- **Expose Auth Server Discovery**（documentation）：Add discoverOAuthServerInfo function and unified discovery state caching for OAuth 证据：`.changeset/expose-auth-server-discovery.md`
- **Express Resource Server Auth**（documentation）：Add OAuth Resource-Server glue to the Express adapter: requireBearerAuth middleware token verification + RFC 6750 WWW-Authenticate challenges , mcpAuthMetadataRouter serves RFC 9728 Protected Resource Metadata and mirrors RFC 8414 AS metadata at the resource origin , the getOAuthProtectedResourceMetadataUrl helper, and the OAuthTokenVerifier interface. These restore the v1 src/server/auth Resource-Server pieces as first-class v2 API so MCP servers can plug into an external Authorization Server with a few lines of Express wiring. 证据：`.changeset/express-resource-server-auth.md`
- **Extract Task Manager**（documentation）：refactor: extract task orchestration from Protocol into TaskManager 证据：`.changeset/extract-task-manager.md`
- **Fast Dragons Lead**（documentation）：--- '@modelcontextprotocol/express': patch '@modelcontextprotocol/fastify': patch '@modelcontextprotocol/hono': patch '@modelcontextprotocol/node': patch '@modelcontextprotocol/client': patch '@modelcontextprotocol/server': patch --- tsdown exports resolution fix 证据：`.changeset/fast-dragons-lead.md`
- **Finish Sdkerror Capability**（documentation）：Convert remaining capability-assertion throws to SdkError SdkErrorCode.CapabilityNotSupported, ... . Follow-up to 1454 which missed Client.assertCapability , the task capability helpers in experimental/tasks/helpers.ts , and the sampling/elicitation capability checks in experimental/tasks/server.ts . 证据：`.changeset/finish-sdkerror-capability.md`
- **Fix Abort Listener Leak**（documentation）：Consolidate per-request cleanup in requestWithSchema into a single .finally block. This fixes an abort signal listener leak listeners accumulated when a caller reused one AbortSignal across requests and two cases where responseHandlers entries leaked on send-failure paths. 证据：`.changeset/fix-abort-listener-leak.md`
- 其余 20 条证据见 `AI_CONTEXT_PACK.json` 或 `EVIDENCE_INDEX.json`。

## 宿主 AI 必须遵守的规则

- **把本资产当作开工前上下文，而不是运行环境。**：AI Context Pack 只包含证据化项目理解，不包含目标项目的可执行状态。 证据：`.changeset/README.md`, `CLAUDE.md`, `README.md`
- **回答用户时区分可预览内容与必须安装后才能验证的内容。**：安装前体验的消费者价值来自降低误装和误判，而不是伪装成真实运行。 证据：`.changeset/README.md`, `CLAUDE.md`, `README.md`

## 用户开工前应该回答的问题

- 你准备在哪个宿主 AI 或本地环境中使用它？
- 你只是想先体验工作流，还是准备真实安装？
- 你最在意的是安装成本、输出质量、还是和现有规则的冲突？

## 验收标准

- 所有能力声明都能回指到 evidence_refs 中的文件路径。
- AI_CONTEXT_PACK.md 没有把预览包装成真实运行。
- 用户能在 3 分钟内看懂适合谁、能做什么、如何开始和风险边界。

---

## Doramagic Context Augmentation

下面内容用于强化 Repomix/AI Context Pack 主体。Human Manual 只提供阅读骨架；踩坑日志会被转成宿主 AI 必须遵守的工作约束。

## Human Manual 骨架

使用规则：这里只是项目阅读路线和显著性信号，不是事实权威。具体事实仍必须回到 repo evidence / Claim Graph。

宿主 AI 硬性规则：
- 不得把页标题、章节顺序、摘要或 importance 当作项目事实证据。
- 解释 Human Manual 骨架时，必须明确说它只是阅读路线/显著性信号。
- 能力、安装、兼容性、运行状态和风险判断必须引用 repo evidence、source path 或 Claim Graph。

- **MCP TypeScript SDK 概述**：importance `high`
  - source_paths: README.md, package.json, packages/core/src/index.ts
- **系统架构与包结构**：importance `high`
  - source_paths: packages/server/package.json, packages/client/package.json, packages/middleware/node/package.json, pnpm-workspace.yaml, packages/core/src/types/spec.types.ts
- **协议与类型定义**：importance `high`
  - source_paths: packages/core/src/shared/protocol.ts, packages/core/src/types/spec.types.ts, packages/core/src/types/types.ts, packages/core/src/types/errors.ts, packages/core/src/types/enums.ts
- **数据验证与 Schema**：importance `high`
  - source_paths: packages/core/src/util/zodCompat.ts, packages/core/src/util/standardSchema.ts, packages/core/src/validators/fromJsonSchema.ts, packages/core/src/validators/ajvProvider.ts, packages/core/src/util/schema.ts
- **传输层实现**：importance `high`
  - source_paths: packages/server/src/server/stdio.ts, packages/server/src/server/streamableHttp.ts, packages/client/src/client/stdio.ts, packages/client/src/client/streamableHttp.ts, packages/client/src/client/sse.ts
- **服务器开发指南**：importance `high`
  - source_paths: packages/server/src/server/mcp.ts, packages/server/src/server/server.ts, examples/server/src/serverGuide.examples.ts, examples/server-quickstart/src/index.ts, docs/server-quickstart.md
- **客户端开发指南**：importance `high`
  - source_paths: packages/client/src/client/client.ts, examples/client/src/clientGuide.examples.ts, examples/client-quickstart/src/index.ts, docs/client-quickstart.md, docs/client.md
- **认证与授权机制**：importance `high`
  - source_paths: packages/core/src/shared/auth.ts, packages/core/src/shared/authUtils.ts, packages/client/src/client/auth.ts, packages/client/src/client/authExtensions.ts, packages/client/src/client/crossAppAccess.ts

## Repo Inspection Evidence / 源码检查证据

- repo_clone_verified: true
- repo_inspection_verified: true
- repo_commit: `2c0c481cb9dbfd15c8613f765c940a5f5bace94d`
- inspected_files: `pnpm-lock.yaml`, `package.json`, `README.md`, `docs/migration-SKILL.md`, `docs/v2-banner.js`, `docs/server.md`, `docs/client-quickstart.md`, `docs/server-quickstart.md`, `docs/faq.md`, `docs/client.md`, `docs/migration.md`, `docs/documents.md`, `examples/server-quickstart/package.json`, `examples/server-quickstart/tsconfig.json`, `examples/client-quickstart/package.json`, `examples/client-quickstart/tsconfig.json`, `examples/server/tsdown.config.ts`, `examples/server/package.json`, `examples/server/README.md`, `examples/server/vitest.config.js`

宿主 AI 硬性规则：
- 没有 repo_clone_verified=true 时，不得声称已经读过源码。
- 没有 repo_inspection_verified=true 时，不得把 README/docs/package 文件判断写成事实。
- 没有 quick_start_verified=true 时，不得声称 Quick Start 已跑通。

## Doramagic Pitfall Constraints / 踩坑约束

这些规则来自 Doramagic 发现、验证或编译过程中的项目专属坑点。宿主 AI 必须把它们当作工作约束，而不是普通说明文字。

### Constraint 1: 来源证据：client code can't execute inside browser due to import spawn

- Trigger: GitHub 社区证据显示该项目存在一个运行相关的待验证问题：client code can't execute inside browser due to import spawn
- Host AI rule: 来源问题仍为 open，Pack Agent 需要复核是否仍影响当前版本。
- Why it matters: 可能增加新用户试用和生产接入成本。
- Evidence: community_evidence:github | cevd_8a06947266aa4987ad712baf87a7a156 | https://github.com/modelcontextprotocol/typescript-sdk/issues/2077 | 来源讨论提到 node 相关条件，需在安装/试用前复核。
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 2: 仓库名和安装名不一致

- Trigger: 仓库名 `typescript-sdk` 与安装入口 `@modelcontextprotocol/server` 不完全一致。
- Host AI rule: 在 npm/PyPI/GitHub 上确认包名映射和官方 README 说明。
- Why it matters: 用户照着仓库名搜索包或照着包名找仓库时容易走错入口。
- Evidence: identity.distribution | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | repo=typescript-sdk; install=@modelcontextprotocol/server
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 3: 来源证据：@modelcontextprotocol/node@2.0.0-alpha.1

- Trigger: GitHub 社区证据显示该项目存在一个安装相关的待验证问题：@modelcontextprotocol/node@2.0.0-alpha.1
- Host AI rule: 来源显示可能已有修复、规避或版本变化，说明书中必须标注适用版本。
- Why it matters: 可能影响升级、迁移或版本选择。
- Evidence: community_evidence:github | cevd_fc8de64b72814f8eb9ed0e53852408c2 | https://github.com/modelcontextprotocol/typescript-sdk/releases/tag/%40modelcontextprotocol/node%402.0.0-alpha.1 | 来源讨论提到 node 相关条件，需在安装/试用前复核。
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 4: 来源证据：@modelcontextprotocol/server@2.0.0-alpha.1

- Trigger: GitHub 社区证据显示该项目存在一个安装相关的待验证问题：@modelcontextprotocol/server@2.0.0-alpha.1
- Host AI rule: 来源显示可能已有修复、规避或版本变化，说明书中必须标注适用版本。
- Why it matters: 可能影响升级、迁移或版本选择。
- Evidence: community_evidence:github | cevd_dff36a13cb954c3b84b05e99a28dc4d0 | https://github.com/modelcontextprotocol/typescript-sdk/releases/tag/%40modelcontextprotocol/server%402.0.0-alpha.1 | 来源类型 github_release 暴露的待验证使用条件。
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 5: 能力判断依赖假设

- Trigger: README/documentation is current enough for a first validation pass.
- Host AI rule: 将假设转成下游验证清单。
- Why it matters: 假设不成立时，用户拿不到承诺的能力。
- Evidence: capability.assumptions | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | README/documentation is current enough for a first validation pass.
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 6: 维护活跃度未知

- Trigger: 未记录 last_activity_observed。
- Host AI rule: 补 GitHub 最近 commit、release、issue/PR 响应信号。
- Why it matters: 新项目、停更项目和活跃项目会被混在一起，推荐信任度下降。
- Evidence: evidence.maintainer_signals | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | last_activity_observed missing
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 7: 下游验证发现风险项

- Trigger: no_demo
- Host AI rule: 进入安全/权限治理复核队列。
- Why it matters: 下游已经要求复核，不能在页面中弱化。
- Evidence: downstream_validation.risk_items | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | no_demo; severity=medium
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 8: 存在安全注意事项

- Trigger: No sandbox install has been executed yet; downstream must verify before user use.
- Host AI rule: 转成明确权限清单和安全审查提示。
- Why it matters: 用户安装前需要知道权限边界和敏感操作。
- Evidence: risks.safety_notes | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | No sandbox install has been executed yet; downstream must verify before user use.
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 9: 存在评分风险

- Trigger: no_demo
- Host AI rule: 把风险写入边界卡，并确认是否需要人工复核。
- Why it matters: 风险会影响是否适合普通用户安装。
- Evidence: risks.scoring_risks | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | no_demo; severity=medium
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。

### Constraint 10: issue/PR 响应质量未知

- Trigger: issue_or_pr_quality=unknown。
- Host AI rule: 抽样最近 issue/PR，判断是否长期无人处理。
- Why it matters: 用户无法判断遇到问题后是否有人维护。
- Evidence: evidence.maintainer_signals | github_repo:862578138 | https://github.com/modelcontextprotocol/typescript-sdk | issue_or_pr_quality=unknown
- Hard boundary: 不要把这个坑点包装成已解决、已验证或可忽略，除非后续验证证据明确证明它已经关闭。