# Cnki Download

Download a paper PDF/CAJ from CNKI.

- Repository: https://github.com/cookjohn/cnki-skills (1031 stars)
- Category: Documents
- License: see repository
- Last updated: 2026-03-13
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add cookjohn/cnki-skills --skill cnki-download -g -a claude-code -y`
Codex: `npx skills add cookjohn/cnki-skills --skill cnki-download -g -a codex -y`
Cursor: `npx skills add cookjohn/cnki-skills --skill cnki-download -g -a cursor -y`
Gemini CLI: `npx skills add cookjohn/cnki-skills --skill cnki-download -g -a gemini-cli -y`

## Description

Download a paper PDF/CAJ from CNKI. Requires user to be logged in. Use when user wants to download a specific paper.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# CNKI Paper Download (文献下载)

## Prerequisites

User **must be logged in** to CNKI with download permissions.

## Arguments

`$ARGUMENTS` is optionally a paper detail URL. If blank, uses current page.

## Steps

### 1. Navigate (if URL provided)

If URL provided: use `navigate_page` to go to the URL directly (no wait_for needed, Step 2 handles waiting).

**Important**: Always use `navigate_page` instead of clicking links on the search results page. Clicking opens a new tab and wastes 3 extra tool calls (`list_pages` + `select_page` + `take_snapshot`).

### 2. Check status and download (single async evaluate_script)

Replace `FORMAT` with `"pdf"` or `"caj"`:

```javascript
async () => {
  // Wait for page load
  await new Promise((r, j) => {
    let n = 0;
    const c = () => {
      if (document.querySelector('.brief h1')) r();
      else if (++n > 30) j('timeout');
      else setTimeout(c, 500);
    };
    c();
  });

  // Captcha check
  const cap = document.querySelector('#tcaptcha_transform_dy');
  if (cap && cap.getBoundingClientRect().top >= 0) {
    return { error: 'captcha', message: 'CNKI 正在显示滑块验证码。请在 Chrome 中手动完成拼图验证。' };
  }

  const format = "FORMAT"; // "pdf" or "caj"

  // Check download links
  const pdfLink = document.querySelector('#pdfDown') || document.querySelector('.btn-dlpdf a');
  const cajLink = document.querySelector('#cajDown') || document.querySelector('.btn-dlcaj a');

  // Check login status
  const notLogged = document.querySelector('.downloadlink.icon-notlogged')
    || document.querySelector('[class*="notlogged"]');
  if (notLogged) {
    return { error: 'not_logged_in', message: '下载需要登录。请先在 Chrome 中登录知网账号。' };
  }

  const title = document.querySelector('.brief h1')?.innerText?.trim()?.replace(/\s*网络首发\s*$/, '') || '';

The rest: https://github.com/cookjohn/cnki-skills/blob/HEAD/skills/cnki-download/SKILL.md