diff --git a/.gitignore b/.gitignore
index 24f02f0..11f42c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ dist/
 pdf_images/
 
 public/api/
+public/apidoc
diff --git a/docs/知识库API接口说明.md b/docs/知识库API接口说明.md
index d3543d0..9a14889 100644
--- a/docs/知识库API接口说明.md
+++ b/docs/知识库API接口说明.md
@@ -25,6 +25,7 @@
 | 单绩效域详情 | `/api/performance-domains/{id}.json` |
 | 工件反查使用情况 | `/api/artifacts/{id}/usage.json` |
 | 工具反查使用情况 | `/api/tools/{id}/usage.json` |
+| Markdown 接口文档 | `/apidoc` |
 
 ## 3. 接口说明
 
@@ -397,6 +398,23 @@
 |---|---|
 | `usedIn` | 使用该工具与技术的过程数组 |
 
+---
+
+### 3.13 Markdown 接口文档
+
+用于让外部系统直接读取本说明文档。
+
+`GET /apidoc`
+
+响应体为 Markdown 文本字符串，不作为附件下载。
+
+示例响应：
+
+```markdown
+# 知识库 API 接口说明
+...
+```
+
 ## 4. 常用调用示例
 
 ```text
@@ -420,4 +438,7 @@
 
 反查专家判断在哪些过程中使用：
 /api/tools/TT001/usage.json
+
+读取接口 Markdown 文档：
+/apidoc
 ```
diff --git a/nginx.conf b/nginx.conf
index 8e0f8cc..b59df94 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -10,6 +10,15 @@ server {
     }
 
 
+
+    # Markdown 接口说明，直接返回文本内容
+    location = /apidoc {
+        default_type text/markdown;
+        charset utf-8;
+        try_files /apidoc =404;
+        add_header Cache-Control "no-store";
+    }
+
     # 知识库静态 JSON API，接口路径不存在时返回 404，避免被 SPA 回退到 index.html
     location /api/ {
         try_files $uri =404;
diff --git a/scripts/generate-api.mjs b/scripts/generate-api.mjs
index 1447708..39f6dd5 100644
--- a/scripts/generate-api.mjs
+++ b/scripts/generate-api.mjs
@@ -7,6 +7,7 @@ const __dirname = path.dirname(fileURLToPath(import.meta.url))
 const rootDir = path.resolve(__dirname, '..')
 const dataDir = path.join(rootDir, 'src', 'data')
 const apiDir = path.join(rootDir, 'public', 'api')
+const apiDocPath = path.join(rootDir, 'public', 'apidoc')
 
 function readJson(relativePath) {
   return JSON.parse(fs.readFileSync(path.join(rootDir, relativePath), 'utf8'))
@@ -24,9 +25,21 @@ function writeJson(relativePath, data) {
 
 function cleanApiDir() {
   fs.rmSync(apiDir, { recursive: true, force: true })
+  fs.rmSync(apiDocPath, { force: true })
   ensureDir(apiDir)
 }
 
+function writeTextFile(target, content) {
+  ensureDir(path.dirname(target))
+  fs.writeFileSync(target, content, 'utf8')
+}
+
+function copyApiDoc() {
+  const source = path.join(rootDir, 'docs', '知识库API接口说明.md')
+  const content = fs.readFileSync(source, 'utf8')
+  writeTextFile(apiDocPath, content)
+}
+
 function extractConstArrayFromTs(filePath, constName) {
   const text = fs.readFileSync(filePath, 'utf8')
   const marker = `export const ${constName}`
@@ -280,4 +293,7 @@ for (const tool of tools) {
   writeJson(`tools/${tool.id}/usage.json`, toolUsage(tool))
 }
 
+copyApiDoc()
+
 console.log(`已生成静态 API 文件：${path.relative(rootDir, apiDir)}`)
+console.log(`已生成 Markdown 接口文档：${path.relative(rootDir, apiDocPath)}`)
diff --git a/src/pages/ApiDocPage.tsx b/src/pages/ApiDocPage.tsx
index f85b00d..9d7edfa 100644
--- a/src/pages/ApiDocPage.tsx
+++ b/src/pages/ApiDocPage.tsx
@@ -121,6 +121,15 @@ const endpoints: ApiEndpoint[] = [
     description: '返回指定工具与技术出现的过程。',
     fields: ['id：工具 ID', 'name：工具名称', 'usedIn：使用该工具的过程数组'],
   },
+  {
+    id: 'api-doc-markdown',
+    name: 'Markdown 接口文档',
+    method: 'GET',
+    path: '/apidoc',
+    samplePath: '/apidoc',
+    description: '返回接口说明 Markdown 文本字符串。',
+    fields: ['响应体：Markdown 文本字符串', '用途：供知识库或外部系统直接读取接口说明'],
+  },
 ]
 
 const fieldGroups = [
@@ -167,7 +176,7 @@ export function ApiDocPage() {
     setResult('')
 
     try {
-      const response = await fetch(requestPath, { headers: { Accept: 'application/json' } })
+      const response = await fetch(requestPath, { headers: { Accept: 'application/json, text/markdown, text/plain, */*' } })
       const contentType = response.headers.get('content-type') ?? ''
       const body = contentType.includes('application/json') ? await response.json() : await response.text()
 
@@ -200,8 +209,18 @@ export function ApiDocPage() {
             </div>
             <h1 className="text-2xl font-bold text-gray-900 dark:text-white">API 调用说明</h1>
             <p className="mt-2 max-w-2xl text-sm leading-6 text-gray-500 dark:text-gray-400">
-              静态 JSON 接口采用 GET 请求，路径以 /api 开头，面向知识库读取；不包含搜索、展示样式和 五问一法。
+              静态接口采用 GET 请求，/api 返回 JSON，/apidoc 返回 Markdown 文本；面向知识库读取，不包含搜索、展示样式和五问一法。
             </p>
+            <div className="mt-4 flex flex-wrap gap-2">
+              <a
+                href="/apidoc"
+                target="_blank"
+                rel="noreferrer"
+                className="inline-flex items-center rounded-lg bg-gray-900 px-3 py-2 text-sm font-medium text-white transition hover:bg-gray-700 dark:bg-white dark:text-gray-900 dark:hover:bg-gray-200"
+              >
+                查看 Markdown 文档 /apidoc
+              </a>
+            </div>
           </div>
           <div className="grid grid-cols-3 gap-3 text-center">
             <div className="rounded-xl bg-gray-50 px-4 py-3 dark:bg-gray-900/50">
@@ -213,7 +232,7 @@ export function ApiDocPage() {
               <div className="text-xs text-gray-500 dark:text-gray-400">请求方法</div>
             </div>
             <div className="rounded-xl bg-gray-50 px-4 py-3 dark:bg-gray-900/50">
-              <div className="text-lg font-bold text-gray-900 dark:text-white">JSON</div>
+              <div className="text-lg font-bold text-gray-900 dark:text-white">JSON/MD</div>
               <div className="text-xs text-gray-500 dark:text-gray-400">响应格式</div>
             </div>
           </div>