diff --git a/README.md b/README.md
index 0cfd8a6..e3f1b82 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,8 @@
 
 用搜索类 MCP 服务器完整替代 DeepSeek Harness（DSH）内置网页搜索的独立插件。
 
-> 当前兼容基线：DeepSeek Harness `0.1.1-rc.2`，Node.js 20 或更高版本。
+> 当前兼容基线：DeepSeek Harness `>=0.2.0-rc.2`（Desktop / Web），Node.js 20 或更高版本。
+> MCP 传输使用 DSH 0.2 提供的 `@modelcontextprotocol/client`（不再依赖已从 Desktop 移除的 monolith `@modelcontextprotocol/sdk`）。
 
 ## 功能
 
@@ -17,14 +18,14 @@
 ## 安装
 
 ```powershell
-git clone https://github.com/gxpppp/dsh-search-mcp.git
+git clone https://github.com/hansjone/dsh-search-mcp.git
 cd dsh-search-mcp
 npm install
-dsh plugin --profile web add link:<dsh-search-mcp 的绝对路径>
-dsh web
+dsh plugin --profile desktop add link:<dsh-search-mcp 的绝对路径>
+# 或: dsh plugin --profile web add link:<绝对路径>
 ```
 
-`link:` 会让源码更新直接作用于 profile。修改或升级浏览器 bundle 后需要重启 DSH Web 并刷新页面。
+`link:` 会让源码更新直接作用于 profile。Desktop 0.2 可从宿主解析 `@modelcontextprotocol/client` / `undici` / `ipaddr.js` peers；但仍建议在仓库内跑一次 `npm install`（并删掉空的 `node_modules\@modelcontextprotocol` 残留目录），避免解析踩空目录。修改或升级浏览器 bundle 后需要重启 DSH 并刷新页面。
 
 如果 profile 中已有独立搜索 MCP 行，建议先移除重复入口，避免同时暴露 `mcp__...` 工具和本插件提供的 `web_search`。
 
diff --git a/lib/client.js b/lib/client.js
index c4dbcb8..4da4526 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -1,7 +1,12 @@
-/** MCP transport layer for one search. */
-import { Client } from '@modelcontextprotocol/sdk/client/index.js';
-import { StreamableHTTPClientTransport } from '@modelcontextprotocol/sdk/client/streamableHttp.js';
-import { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js';
+/**
+ * MCP transport layer for one search.
+ *
+ * Desktop 0.2 ships the split MCP client package (v2). Import that package so
+ * link:/Desktop profiles can resolve it from the host graph without a local
+ * `node_modules` copy of the legacy monolith SDK.
+ */
+import { Client, StreamableHTTPClientTransport } from '@modelcontextprotocol/client';
+import { StdioClientTransport } from '@modelcontextprotocol/client/stdio';
 import { WebError } from '@deepseek-ai/dsh-web';
 import { Agent, fetch as undiciFetch } from 'undici';
 import { clampSearchResults } from './catalog.js';
@@ -17,7 +22,10 @@ export async function callMcpSearch(server, key, args, signal) {
   }
 
   let runtime;
-  const client = new Client({ name: 'dsh-search-mcp', version: '0.2.0' }, { capabilities: {} });
+  const client = new Client(
+    { name: 'dsh-search-mcp', version: '0.2.39' },
+    { capabilities: {}, versionNegotiation: { mode: 'auto' } },
+  );
   try {
     runtime = server.transport === 'stdio'
       ? { transport: stdioTransport(server, key), close: async () => {} }
diff --git a/package-lock.json b/package-lock.json
index 62d662f..32130dc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,26 +1,42 @@
 {
   "name": "dsh-search-mcp",
-  "version": "0.2.0",
+  "version": "0.2.39",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dsh-search-mcp",
-      "version": "0.2.0",
+      "version": "0.2.39",
       "license": "MIT",
       "dependencies": {
-        "@deepseek-ai/dsh-api-remotes": "0.1.1-rc.2",
-        "@deepseek-ai/dsh-credentials": "0.1.1-rc.2",
-        "@deepseek-ai/dsh-launch-environment": "0.1.1-rc.2",
-        "@deepseek-ai/dsh-settings": "0.1.1-rc.2",
-        "@deepseek-ai/dsh-web": "0.1.1-rc.2",
-        "@deepseek-ai/schemastery": "3.18.1",
-        "@modelcontextprotocol/sdk": "1.30.0",
+        "@modelcontextprotocol/client": "2.0.0",
         "ipaddr.js": "2.5.0",
         "undici": "6.28.0"
       },
       "engines": {
         "node": ">=20"
+      },
+      "peerDependencies": {
+        "@deepseek-ai/dsh-api-remotes": "*",
+        "@deepseek-ai/dsh-credentials": "*",
+        "@deepseek-ai/dsh-launch-environment": "*",
+        "@deepseek-ai/dsh-settings": "*",
+        "@deepseek-ai/dsh-web": "*",
+        "@deepseek-ai/schemastery": "*",
+        "@modelcontextprotocol/client": "*",
+        "ipaddr.js": "*",
+        "undici": "*"
+      },
+      "peerDependenciesMeta": {
+        "@modelcontextprotocol/client": {
+          "optional": true
+        },
+        "ipaddr.js": {
+          "optional": true
+        },
+        "undici": {
+          "optional": true
+        }
       }
     },
     "node_modules/@deepseek-ai/cordis": {
@@ -87,7 +103,8 @@
       "version": "1.8.2",
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/cosmokit/-/cosmokit-1.8.2.tgz",
       "integrity": "sha512-muBOKtSrUKU5m/xpq8ZXWL6hQ/jgd4PhU2PqH97bcxIiLEJfNwZOGQEx4t/aS/GgxRAR+ra9pMHPMtTHU4sqqA==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@deepseek-ai/dsh-agent": {
       "version": "0.1.1-rc.2",
@@ -167,6 +184,7 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/dsh-api-remotes/-/dsh-api-remotes-0.1.1-rc.2.tgz",
       "integrity": "sha512-mtmMxA0TZwTjy46E2DF0kmsPCXVq6RBhrwEHWXBaRzc0DLjnYqmJODrZ0X+XwXOkwFZtDxWSv/uheiIsXf8now==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@deepseek-ai/dsh-typert-protocol": "^0.1.1-rc.2"
       },
@@ -321,6 +339,7 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/dsh-credentials/-/dsh-credentials-0.1.1-rc.2.tgz",
       "integrity": "sha512-aeVBaH07rox7NuSNbSqbz8g0eNb2IIhNbrZngj/VxUsr/TR9TXOq7lm1CL6SBUDlstGw3vNWeXyhim/DmA5iSQ==",
       "license": "MIT",
+      "peer": true,
       "peerDependencies": {
         "@deepseek-ai/cordis": "^4.0.1",
         "@deepseek-ai/dsh-brand": "^0.1.1-rc.2",
@@ -493,6 +512,7 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/dsh-launch-environment/-/dsh-launch-environment-0.1.1-rc.2.tgz",
       "integrity": "sha512-LIjPUPwaZ2cIiz98Oqxn9TDKXhWlp+0EGmUhk4RerBAkqRVtDl0B/leK1pSZLLIR+qcr+VAwLGJagY8Xm9XWvw==",
       "license": "MIT",
+      "peer": true,
       "peerDependencies": {
         "@deepseek-ai/cordis": "^4.0.1",
         "@deepseek-ai/dsh-invariants": "^0.1.1-rc.2"
@@ -699,6 +719,7 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/dsh-settings/-/dsh-settings-0.1.1-rc.2.tgz",
       "integrity": "sha512-iGdKEt91Im3gE7xA9CzRfTJsPcFcxDeDOCLhAjzbpjEv7TAjx/EoYP7lPtiy+QmOjKSKy206SEtAKol9PXWbOw==",
       "license": "MIT",
+      "peer": true,
       "peerDependencies": {
         "@deepseek-ai/cordis": "^4.0.1",
         "@deepseek-ai/dsh-brand": "^0.1.1-rc.2",
@@ -856,6 +877,7 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/dsh-typert-protocol/-/dsh-typert-protocol-0.1.1-rc.2.tgz",
       "integrity": "sha512-lxBssDc5Pz1qBE5kuIyaArA7AvIPq9rpaVclylodiSzVJe95e2xruBg73tflyjtd8y00toet+DLgQ6tSSsq6Kw==",
       "license": "MIT",
+      "peer": true,
       "peerDependencies": {
         "@deepseek-ai/cordis": "^4.0.1",
         "@deepseek-ai/dsh-invariants": "^0.1.1-rc.2"
@@ -914,6 +936,7 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/dsh-web/-/dsh-web-0.1.1-rc.2.tgz",
       "integrity": "sha512-Rtikc8RUlfx6m9+hYvKB3JlAD34PrI2UFHEu1h8UMb7pM/ulIRpjBF7TPlg537WRK4ufCysqCJm0RheNMoYCcQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@deepseek-ai/schemastery": "^3.18.1"
       },
@@ -947,114 +970,48 @@
       "resolved": "https://registry.npmmirror.com/@deepseek-ai/schemastery/-/schemastery-3.18.1.tgz",
       "integrity": "sha512-Qn0FCSwCQnpnj6SB31I6i2sIKgKWnkbJM8O0EU91Gv2UsYVvtZTl6IA0sCwk2e2MZf5S8w5hpq9QkeVvK9qwxg==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@deepseek-ai/cosmokit": "^1.8.2",
         "@standard-schema/spec": "^1.1.0"
       }
     },
-    "node_modules/@hono/node-server": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmmirror.com/@hono/node-server/-/node-server-2.1.0.tgz",
-      "integrity": "sha512-XovyyCCnBzW+zKu+z/zq8hwNs4KOR5rEMAOxo2f40Q5xoOI37IMm6MIg2COOUtUApo0i6850MTBKH2u4QLGIqg==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=20"
-      },
-      "peerDependencies": {
-        "hono": "^4"
-      }
-    },
-    "node_modules/@modelcontextprotocol/sdk": {
-      "version": "1.30.0",
-      "resolved": "https://registry.npmmirror.com/@modelcontextprotocol/sdk/-/sdk-1.30.0.tgz",
-      "integrity": "sha512-xKd8OIzlqNzcqcNumGAa6g+PW2kjD5vrpcKOnfldAUPP3j7lnqMPwlTXQm8gF+UwH72z0lqaRbjr9hqGz0eITA==",
+    "node_modules/@modelcontextprotocol/client": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/client/-/client-2.0.0.tgz",
+      "integrity": "sha512-8f1OghQ2rjzIOfqgUCP+8GiUWqRs89njoWLNqAe8kWmDePv3s1fZXseej+QXemssEuuOvLLmLO/kqM3IQHtISw==",
       "license": "MIT",
       "dependencies": {
-        "@hono/node-server": "^1.19.9 || ^2.0.5",
-        "ajv": "^8.17.1",
-        "ajv-formats": "^3.0.1",
-        "content-type": "^1.0.5",
-        "cors": "^2.8.5",
+        "@modelcontextprotocol/core": "2.0.0",
         "cross-spawn": "^7.0.5",
         "eventsource": "^3.0.2",
         "eventsource-parser": "^3.0.0",
-        "express": "^5.2.1",
-        "express-rate-limit": "^8.2.1",
-        "hono": "^4.11.4",
         "jose": "^6.1.3",
-        "json-schema-typed": "^8.0.2",
         "pkce-challenge": "^5.0.0",
-        "raw-body": "^3.0.0",
-        "zod": "^3.25 || ^4.0",
-        "zod-to-json-schema": "^3.25.1"
+        "zod": "^4.2.0"
       },
       "engines": {
-        "node": ">=18"
+        "node": ">=20"
+      }
+    },
+    "node_modules/@modelcontextprotocol/core": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.0.0.tgz",
+      "integrity": "sha512-pJCEwGG7Lfr/+PQp9ZTwKXNeO5wzbfKL7H3MYpCorM4oFBoQrdjnBgEoqG+RjhsvS1FKrDbKux+M1HhlnGWqcA==",
+      "license": "MIT",
+      "dependencies": {
+        "zod": "^4.2.0"
       },
-      "peerDependencies": {
-        "@cfworker/json-schema": "^4.1.1",
-        "zod": "^3.25 || ^4.0"
-      },
-      "peerDependenciesMeta": {
-        "@cfworker/json-schema": {
-          "optional": true
-        },
-        "zod": {
-          "optional": false
-        }
+      "engines": {
+        "node": ">=20"
       }
     },
     "node_modules/@standard-schema/spec": {
       "version": "1.1.0",
       "resolved": "https://registry.npmmirror.com/@standard-schema/spec/-/spec-1.1.0.tgz",
       "integrity": "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==",
-      "license": "MIT"
-    },
-    "node_modules/accepts": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmmirror.com/accepts/-/accepts-2.0.0.tgz",
-      "integrity": "sha512-5cvg6CtKwfgdmVqY1WIiXKc3Q1bkRqGLi+2W/6ao+6Y7gu/RCwRuAhGEzh5B4KlszSuTLgZYuqFqo5bImjNKng==",
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-      "dependencies": {
-        "mime-types": "^3.0.0",
-        "negotiator": "^1.0.0"
-      },
-      "engines": {
-        "node": ">= 0.6"
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-    "node_modules/ajv": {
-      "version": "8.20.0",
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-      "integrity": "sha512-Thbli+OlOj+iMPYFBVBfJ3OmCAnaSyNn4M1vz9T6Gka5Jt9ba/HIR56joy65tY6kx/FCF5VXNB819Y7/GUrBGA==",
-      "license": "MIT",
-      "dependencies": {
-        "fast-deep-equal": "^3.1.3",
-        "fast-uri": "^3.0.1",
-        "json-schema-traverse": "^1.0.0",
-        "require-from-string": "^2.0.2"
-      },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/epoberezkin"
-      }
-    },
-    "node_modules/ajv-formats": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmmirror.com/ajv-formats/-/ajv-formats-3.0.1.tgz",
-      "integrity": "sha512-8iUql50EUR+uUcdRQ3HDqa6EVyo3docL8g5WJ3FNcWmu62IbkGUue/pEyLBW8VGKKucTPgqeks4fIU1DA4yowQ==",
-      "license": "MIT",
-      "dependencies": {
-        "ajv": "^8.0.0"
-      },
-      "peerDependencies": {
-        "ajv": "^8.0.0"
-      },
-      "peerDependenciesMeta": {
-        "ajv": {
-          "optional": true
-        }
-      }
+      "peer": true
     },
     "node_modules/argparse": {
       "version": "2.0.1",
@@ -1063,138 +1020,6 @@
       "license": "Python-2.0",
       "peer": true
     },
-    "node_modules/body-parser": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmmirror.com/body-parser/-/body-parser-2.3.0.tgz",
-      "integrity": "sha512-2cGmJupaNgg+QUwVLAucDuWuoMZ6EX9iHDRswZ5lsNYEmwPaRknMPCLZz07yTzVq/83p4o/wzbDZbBrTvGGTIw==",
-      "license": "MIT",
-      "dependencies": {
-        "bytes": "^3.1.2",
-        "content-type": "^2.0.0",
-        "debug": "^4.4.3",
-        "http-errors": "^2.0.1",
-        "iconv-lite": "^0.7.2",
-        "on-finished": "^2.4.1",
-        "qs": "^6.15.2",
-        "raw-body": "^3.0.2",
-        "type-is": "^2.1.0"
-      },
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
-      }
-    },
-    "node_modules/body-parser/node_modules/content-type": {
-      "version": "2.0.0",
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-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
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-      "version": "3.1.2",
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-      "license": "MIT",
-      "dependencies": {
-        "object-assign": "^4",
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@@ -1209,106 +1034,6 @@
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@@ -1820,154 +1127,6 @@
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@@ -1989,127 +1148,6 @@
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@@ -2119,24 +1157,6 @@
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@@ -2152,12 +1172,6 @@
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@@ -2188,15 +1202,6 @@
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       }
-    },
-    "node_modules/zod-to-json-schema": {
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-      "license": "ISC",
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   }
 }
diff --git a/package.json b/package.json
index 8388928..157ca7b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dsh-search-mcp",
-  "version": "0.2.38",
+  "version": "0.2.39",
   "description": "Replace dsh's built-in web search with search MCP servers (Tavily / Brave / Exa / Perplexity / DuckDuckGo / custom), configured from the web Settings page. When this plugin is enabled the built-in DeepSeek search provider is disabled.",
   "type": "module",
   "main": "lib/index.js",
@@ -48,7 +48,7 @@
     }
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "1.30.0",
+    "@modelcontextprotocol/client": "2.0.0",
     "ipaddr.js": "2.5.0",
     "undici": "6.28.0"
   },
@@ -58,6 +58,20 @@
     "@deepseek-ai/dsh-launch-environment": "*",
     "@deepseek-ai/dsh-settings": "*",
     "@deepseek-ai/dsh-web": "*",
-    "@deepseek-ai/schemastery": "*"
+    "@deepseek-ai/schemastery": "*",
+    "@modelcontextprotocol/client": "*",
+    "ipaddr.js": "*",
+    "undici": "*"
+  },
+  "peerDependenciesMeta": {
+    "@modelcontextprotocol/client": {
+      "optional": true
+    },
+    "ipaddr.js": {
+      "optional": true
+    },
+    "undici": {
+      "optional": true
+    }
   }
 }
diff --git a/test/compatibility.test.js b/test/compatibility.test.js
index b06a8ef..99ca89e 100644
--- a/test/compatibility.test.js
+++ b/test/compatibility.test.js
@@ -12,8 +12,10 @@ test('package exports resolve and peerDependencies stay open', async () => {
   assert.equal(pkg.exports['.'], './lib/index.js')
   assert.equal(pkg.exports['./client'], './lib/client.browser.js')
   assert.equal(pkg.engines.node, '>=20')
-  assert.equal(pkg.version, '0.2.38')
+  assert.equal(pkg.version, '0.2.39')
   assert.equal(pkg.dsh.client.immediately, false)
+  assert.equal(pkg.dependencies['@modelcontextprotocol/client'], '2.0.0')
+  assert.ok(!Object.hasOwn(pkg.dependencies, '@modelcontextprotocol/sdk'))
 
   for (const name of [
     '@deepseek-ai/dsh-api-remotes',
@@ -22,6 +24,9 @@ test('package exports resolve and peerDependencies stay open', async () => {
     '@deepseek-ai/dsh-settings',
     '@deepseek-ai/dsh-web',
     '@deepseek-ai/schemastery',
+    '@modelcontextprotocol/client',
+    'ipaddr.js',
+    'undici',
   ]) {
     assert.equal(pkg.peerDependencies[name], '*')
   }
@@ -82,9 +87,13 @@ test('known providers are CDKey-only while custom keeps advanced fields', async
 
 test('HTTP transport pins DNS and applies one guarded fetch to every SDK request', async () => {
   const transport = await read('lib/client.js')
+  assert.match(transport, /from '@modelcontextprotocol\/client'/)
+  assert.match(transport, /from '@modelcontextprotocol\/client\/stdio'/)
+  assert.doesNotMatch(transport, /from ['"]@modelcontextprotocol\/sdk/)
   assert.match(transport, /validateHttpEndpoint\(server\.url, \{ signal \}\)/)
   assert.match(transport, /dispatcher: agent/)
   assert.match(transport, /redirect: 'error'/)
+  assert.match(transport, /versionNegotiation:\s*\{\s*mode:\s*['"]auto['"]/)
 })
 
 test('bundle inserts search-mcp without pinning web.searchProvider (Desktop 0.2 boot-safe)', async () => {