diff --git a/src/clis/boss/detail.ts b/src/clis/boss/detail.ts
new file mode 100644
index 0000000..aaa6c50
--- /dev/null
+++ b/src/clis/boss/detail.ts
@@ -0,0 +1,111 @@
+/**
+ * BOSS直聘 job detail — fetch full job posting details via browser cookie API.
+ *
+ * Uses securityId from search results to call the detail API.
+ * Returns: job description, skills, welfare, boss info, company info, address.
+ */
+import { cli, Strategy } from '../../registry.js';
+import type { IPage } from '../../types.js';
+
+cli({
+  site: 'boss',
+  name: 'detail',
+  description: 'BOSS直聘查看职位详情',
+  domain: 'www.zhipin.com',
+  strategy: Strategy.COOKIE,
+
+  browser: true,
+  args: [
+    { name: 'security_id', required: true, help: 'Security ID from search results (securityId field)' },
+  ],
+  columns: [
+    'name', 'salary', 'experience', 'degree', 'city', 'district',
+    'description', 'skills', 'welfare',
+    'boss_name', 'boss_title', 'active_time',
+    'company', 'industry', 'scale', 'stage',
+    'address', 'url',
+  ],
+  func: async (page: IPage | null, kwargs) => {
+    if (!page) throw new Error('Browser page required');
+
+    const securityId = kwargs.security_id;
+
+    // Navigate to zhipin.com first to establish cookie context
+    await page.goto('https://www.zhipin.com/web/geek/job');
+    await new Promise(r => setTimeout(r, 1000));
+
+    const targetUrl = `https://www.zhipin.com/wapi/zpgeek/job/detail.json?securityId=${encodeURIComponent(securityId)}`;
+
+    if (process.env.OPENCLI_VERBOSE || process.env.DEBUG?.includes('opencli')) {
+      console.error(`[opencli:boss] Fetching job detail...`);
+    }
+
+    const evaluateScript = `
+      async () => {
+        return new Promise((resolve, reject) => {
+          const xhr = new window.XMLHttpRequest();
+          xhr.open('GET', '${targetUrl}', true);
+          xhr.withCredentials = true;
+          xhr.timeout = 15000;
+          xhr.setRequestHeader('Accept', 'application/json, text/plain, */*');
+          xhr.onload = () => {
+            if (xhr.status >= 200 && xhr.status < 300) {
+              try {
+                resolve(JSON.parse(xhr.responseText));
+              } catch (e) {
+                reject(new Error('Failed to parse JSON. Raw (200 chars): ' + xhr.responseText.substring(0, 200)));
+              }
+            } else {
+              reject(new Error('XHR HTTP Status: ' + xhr.status));
+            }
+          };
+          xhr.onerror = () => reject(new Error('XHR Network Error'));
+          xhr.ontimeout = () => reject(new Error('XHR Timeout'));
+          xhr.send();
+        });
+      }
+    `;
+
+    let data: any;
+    try {
+      data = await page.evaluate(evaluateScript);
+    } catch (e: any) {
+      throw new Error('API evaluate failed: ' + e.message);
+    }
+
+    if (data.code !== 0) {
+      if (data.code === 37) {
+        throw new Error('Cookie 已过期！请在当前 Chrome 浏览器中重新登录 BOSS 直聘。');
+      }
+      throw new Error(`BOSS API error: ${data.message || 'Unknown'} (code=${data.code})`);
+    }
+
+    const zpData = data.zpData || {};
+    const jobInfo = zpData.jobInfo || {};
+    const bossInfo = zpData.bossInfo || {};
+    const brandComInfo = zpData.brandComInfo || {};
+
+    return [{
+      name: jobInfo.jobName || '',
+      salary: jobInfo.salaryDesc || '',
+      experience: jobInfo.experienceName || '',
+      degree: jobInfo.degreeName || '',
+      city: jobInfo.locationName || '',
+      district: jobInfo.address || '',
+      description: jobInfo.postDescription || '',
+      skills: (jobInfo.showSkills || []).join(', '),
+      welfare: (brandComInfo.labels || []).join(', '),
+      boss_name: bossInfo.name || '',
+      boss_title: bossInfo.title || '',
+      active_time: bossInfo.activeTimeDesc || '',
+      company: brandComInfo.brandName || bossInfo.brandName || '',
+      industry: brandComInfo.industryName || '',
+      scale: brandComInfo.scaleName || '',
+      stage: brandComInfo.stageName || '',
+      address: jobInfo.address || '',
+      url: jobInfo.encryptId
+        ? 'https://www.zhipin.com/job_detail/' + jobInfo.encryptId + '.html'
+        : '',
+    }];
+  },
+});