---
name: canghe-post-to-wechat
description: Posts content to WeChat Official Account (微信公众号) via API or Chrome CDP. Supports article posting (文章) with HTML, markdown, or plain text input, and image-text posting (贴图, formerly 图文) with multiple images. Use when user mentions "发布公众号", "post to wechat", "微信公众号", or "贴图/图文/文章".
---

# Post to WeChat Official Account

## Language

**Match user's language**: Respond in the same language the user uses. If user writes in Chinese, respond in Chinese. If user writes in English, respond in English.

## Script Directory

**Agent Execution**: Determine this SKILL.md directory as `SKILL_DIR`, then use `${SKILL_DIR}/scripts/<name>.ts`.

| Script | Purpose |
|--------|---------|
| `scripts/wechat-browser.ts` | Image-text posts (图文) |
| `scripts/wechat-article.ts` | Article posting via browser (文章) |
| `scripts/wechat-api.ts` | Article posting via API (文章) |
| `scripts/check-permissions.ts` | Verify environment & permissions |

## Preferences (EXTEND.md)

Use Bash to check EXTEND.md existence (priority order):

```bash
# Check project-level first
test -f .canghe-skills/canghe-post-to-wechat/EXTEND.md && echo "project"

# Then user-level (cross-platform: $HOME works on macOS/Linux/WSL)
test -f "$HOME/.canghe-skills/canghe-post-to-wechat/EXTEND.md" && echo "user"
```

┌────────────────────────────────────────────────────────┬───────────────────┐
│                          Path                          │     Location      │
├────────────────────────────────────────────────────────┼───────────────────┤
│ .canghe-skills/canghe-post-to-wechat/EXTEND.md           │ Project directory │
├────────────────────────────────────────────────────────┼───────────────────┤
│ $HOME/.canghe-skills/canghe-post-to-wechat/EXTEND.md     │ User home         │
└────────────────────────────────────────────────────────┴───────────────────┘

┌───────────┬───────────────────────────────────────────────────────────────────────────┐
│  Result   │                                  Action                                   │
├───────────┼───────────────────────────────────────────────────────────────────────────┤
│ Found     │ Read, parse, apply settings                                               │
├───────────┼───────────────────────────────────────────────────────────────────────────┤
│ Not found │ Run first-time setup ([references/config/first-time-setup.md](references/config/first-time-setup.md)) → Save → Continue │
└───────────┴───────────────────────────────────────────────────────────────────────────┘

**EXTEND.md Supports**: Default theme | Default publishing method (api/browser) | Default author | Default open-comment switch | Default fans-only-comment switch | Chrome profile path

First-time setup: [references/config/first-time-setup.md](references/config/first-time-setup.md)

**Minimum supported keys** (case-insensitive, accept `1/0` or `true/false`):

| Key | Default | Mapping |
|-----|---------|---------|
| `default_author` | empty | Fallback for `author` when CLI/frontmatter not provided |
| `need_open_comment` | `1` | `articles[].need_open_comment` in `draft/add` request |
| `only_fans_can_comment` | `0` | `articles[].only_fans_can_comment` in `draft/add` request |

**Recommended EXTEND.md example**:

```md
default_theme: default
default_publish_method: api
default_author: 苍何
need_open_comment: 1
only_fans_can_comment: 0
chrome_profile_path: /path/to/chrome/profile
```

**Value priority**:
1. CLI arguments
2. Frontmatter
3. EXTEND.md
4. Skill defaults

## Pre-flight Check (Optional)

Before first use, suggest running the environment check. User can skip if they prefer.

```bash
npx -y bun ${SKILL_DIR}/scripts/check-permissions.ts
```

Checks: Chrome, profile isolation, Bun, Accessibility, clipboard, paste keystroke, API credentials, Chrome conflicts.

**If any check fails**, provide fix guidance per item:

| Check | Fix |
|-------|-----|
| Chrome | Install Chrome or set `WECHAT_BROWSER_CHROME_PATH` env var |
| Profile dir | Ensure `~/.local/share/wechat-browser-profile` is writable |
| Bun runtime | `curl -fsSL https://bun.sh/install \| bash` |
| Accessibility (macOS) | System Settings → Privacy & Security → Accessibility → enable terminal app |
| Clipboard copy | Ensure Swift/AppKit available (macOS Xcode CLI tools: `xcode-select --install`) |
| Paste keystroke (macOS) | Same as Accessibility fix above |
| Paste keystroke (Linux) | Install `xdotool` (X11) or `ydotool` (Wayland) |
| API credentials | Follow guided setup in Step 5, or manually set in `.canghe-skills/.env` |

## Image-Text Posting (图文)

For short posts with multiple images (up to 9):

```bash
npx -y bun ${SKILL_DIR}/scripts/wechat-browser.ts --markdown article.md --images ./images/
npx -y bun ${SKILL_DIR}/scripts/wechat-browser.ts --title "标题" --content "内容" --image img.png --submit
```

See [references/image-text-posting.md](references/image-text-posting.md) for details.

## Article Posting Workflow (文章)

Copy this checklist and check off items as you complete them:

```
Publishing Progress:
- [ ] Step 0: Load preferences (EXTEND.md)
- [ ] Step 1: Determine input type
- [ ] Step 2: Check markdown-to-html skill
- [ ] Step 3: Convert to HTML
- [ ] Step 4: Validate metadata (title, summary, cover)
- [ ] Step 5: Select method and configure credentials
- [ ] Step 6: Publish to WeChat
- [ ] Step 7: Report completion
```

### Step 0: Load Preferences

Check and load EXTEND.md settings (see Preferences section above).

**CRITICAL**: If not found, complete first-time setup BEFORE any other steps or questions.

Resolve and store these defaults for later steps:
- `default_author`
- `need_open_comment` (default `1`)
- `only_fans_can_comment` (default `0`)

### Step 1: Determine Input Type

| Input Type | Detection | Action |
|------------|-----------|--------|
| HTML file | Path ends with `.html`, file exists | Skip to Step 4 |
| Markdown file | Path ends with `.md`, file exists | Continue to Step 2 |
| Plain text | Not a file path, or file doesn't exist | Save to markdown, then Step 2 |

**Plain Text Handling**:

1. Generate slug from content (first 2-4 meaningful words, kebab-case)
2. Create directory and save file:

```bash
mkdir -p "$(pwd)/post-to-wechat/$(date +%Y-%m-%d)"
# Save content to: post-to-wechat/yyyy-MM-dd/[slug].md
```

3. Continue processing as markdown file

**Slug Examples**:
- "Understanding AI Models" → `understanding-ai-models`
- "人工智能的未来" → `ai-future` (translate to English for slug)

### Step 2: Check Markdown-to-HTML Skill

**Skip if**: Input is `.html` file

**Skill Discovery**:

```bash
# Check if canghe-markdown-to-html exists
test -f skills/canghe-markdown-to-html/SKILL.md && echo "found"
```

| Result | Action |
|--------|--------|
| Found | Read its SKILL.md, continue to Step 3 |
| Multiple skills | AskUserQuestion to choose |
| Not found | Show installation suggestion |

**When Not Found**:

```
No markdown-to-html skill found.

Suggested installation:
https://github.com/JimLiu/canghe-skills/blob/main/skills/canghe-markdown-to-html/SKILL.md

Options:
A) Cancel - install the skill first
B) Continue - provide HTML file manually
```

### Step 3: Convert Markdown to HTML

**Skip if**: Input is `.html` file

1. **Ask theme preference** (unless specified in EXTEND.md or CLI):

| Theme | Description |
|-------|-------------|
| `default` | 经典主题 - 传统排版，标题居中带底边，二级标题白字彩底 |
| `grace` | 优雅主题 - 文字阴影，圆角卡片，精致引用块 |
| `simple` | 简洁主题 - 现代极简风，不对称圆角，清爽留白 |

2. **Execute conversion** (using the discovered skill):

```bash
npx -y bun ${MD_TO_HTML_SKILL_DIR}/scripts/main.ts <markdown_file> --theme <theme>
```

3. **Parse JSON output** to get: `htmlPath`, `title`, `author`, `summary`, `contentImages`

### Step 4: Validate Metadata

Check extracted metadata from Step 3 (or HTML meta tags if direct HTML input).

| Field | If Missing |
|-------|------------|
| Title | Prompt: "Enter title, or press Enter to auto-generate from content" |
| Summary | Prompt: "Enter summary, or press Enter to auto-generate (recommended for SEO)" |
| Author | Use fallback chain: CLI `--author` → frontmatter `author` → EXTEND.md `default_author` |

**Auto-Generation Logic**:
- **Title**: First H1/H2 heading, or first sentence
- **Summary**: First paragraph, truncated to 120 characters

**Cover Image Check** (required for `article_type=news`):
1. Use CLI `--cover` if provided.
2. Else use frontmatter (`coverImage`, `featureImage`, `cover`, `image`).
3. Else check article directory default path: `imgs/cover.png`.
4. Else fallback to first inline content image.
5. If still missing, stop and request a cover image before publishing.

### Step 5: Select Publishing Method and Configure

**Ask publishing method** (unless specified in EXTEND.md or CLI):

| Method | Speed | Requirements |
|--------|-------|--------------|
| `api` (Recommended) | Fast | API credentials |
| `browser` | Slow | Chrome, login session |

**If API Selected - Check Credentials**:

```bash
# Check project-level
test -f .canghe-skills/.env && grep -q "WECHAT_APP_ID" .canghe-skills/.env && echo "project"

# Check user-level
test -f "$HOME/.canghe-skills/.env" && grep -q "WECHAT_APP_ID" "$HOME/.canghe-skills/.env" && echo "user"
```

**If Credentials Missing - Guide Setup**:

```
WeChat API credentials not found.

To obtain credentials:
1. Visit https://mp.weixin.qq.com
2. Go to: 开发 → 基本配置
3. Copy AppID and AppSecret

Where to save?
A) Project-level: .canghe-skills/.env (this project only)
B) User-level: ~/.canghe-skills/.env (all projects)
```

After location choice, prompt for values and write to `.env`:

```
WECHAT_APP_ID=<user_input>
WECHAT_APP_SECRET=<user_input>
```

### Step 6: Publish to WeChat

**API method**:

```bash
npx -y bun ${SKILL_DIR}/scripts/wechat-api.ts <html_file> [--title <title>] [--summary <summary>] [--author <author>] [--cover <cover_path>]
```

**`draft/add` payload rules**:
- Use endpoint: `POST https://api.weixin.qq.com/cgi-bin/draft/add?access_token=ACCESS_TOKEN`
- `article_type`: `news` (default) or `newspic`
- For `news`, include `thumb_media_id` (cover is required)
- Always resolve and send:
  - `need_open_comment` (default `1`)
  - `only_fans_can_comment` (default `0`)
- `author` resolution: CLI `--author` → frontmatter `author` → EXTEND.md `default_author`

If script parameters do not expose the two comment fields, still ensure final API request body includes resolved values.

**Browser method**:

```bash
npx -y bun ${SKILL_DIR}/scripts/wechat-article.ts --html <html_file>
```

### Step 7: Completion Report

**For API method**, include draft management link:

```
WeChat Publishing Complete!

Input: [type] - [path]
Method: API
Theme: [theme name]

Article:
• Title: [title]
• Summary: [summary]
• Images: [N] inline images
• Comments: [open/closed], [fans-only/all users]

Result:
✓ Draft saved to WeChat Official Account
• media_id: [media_id]

Next Steps:
→ Manage drafts: https://mp.weixin.qq.com (登录后进入「内容管理」→「草稿箱」)

Files created:
[• post-to-wechat/yyyy-MM-dd/slug.md (if plain text)]
[• slug.html (converted)]
```

**For Browser method**:

```
WeChat Publishing Complete!

Input: [type] - [path]
Method: Browser
Theme: [theme name]

Article:
• Title: [title]
• Summary: [summary]
• Images: [N] inline images

Result:
✓ Draft saved to WeChat Official Account

Files created:
[• post-to-wechat/yyyy-MM-dd/slug.md (if plain text)]
[• slug.html (converted)]
```

## Detailed References

| Topic | Reference |
|-------|-----------|
| Image-text parameters, auto-compression | [references/image-text-posting.md](references/image-text-posting.md) |
| Article themes, image handling | [references/article-posting.md](references/article-posting.md) |

## Feature Comparison

| Feature | Image-Text | Article (API) | Article (Browser) |
|---------|------------|---------------|-------------------|
| Plain text input | ✗ | ✓ | ✓ |
| HTML input | ✗ | ✓ | ✓ |
| Markdown input | Title/content | ✓ (via skill) | ✓ (via skill) |
| Multiple images | ✓ (up to 9) | ✓ (inline) | ✓ (inline) |
| Themes | ✗ | ✓ | ✓ |
| Auto-generate metadata | ✗ | ✓ | ✓ |
| Default cover fallback (`imgs/cover.png`) | ✗ | ✓ | ✗ |
| Comment control (`need_open_comment`, `only_fans_can_comment`) | ✗ | ✓ | ✗ |
| Requires Chrome | ✓ | ✗ | ✓ |
| Requires API credentials | ✗ | ✓ | ✗ |
| Speed | Medium | Fast | Slow |

## Prerequisites

**For API method**:
- WeChat Official Account API credentials
- Guided setup in Step 5, or manually set in `.canghe-skills/.env`

**For Browser method**:
- Google Chrome
- First run: log in to WeChat Official Account (session preserved)

**For Markdown conversion**:
- A markdown-to-html skill (e.g., `canghe-markdown-to-html`)
- If not installed, the workflow will suggest installation

**Config File Locations** (priority order):
1. Environment variables
2. `<cwd>/.canghe-skills/.env`
3. `~/.canghe-skills/.env`

## Troubleshooting

| Issue | Solution |
|-------|----------|
| No markdown-to-html skill | Install `canghe-markdown-to-html` from suggested URL |
| Missing API credentials | Follow guided setup in Step 5 |
| Access token error | Check if API credentials are valid and not expired |
| Not logged in (browser) | First run opens browser - scan QR to log in |
| Chrome not found | Set `WECHAT_BROWSER_CHROME_PATH` env var |
| Title/summary missing | Use auto-generation or provide manually |
| No cover image | Add frontmatter cover or place `imgs/cover.png` in article directory |
| Wrong comment defaults | Check `EXTEND.md` keys `need_open_comment` and `only_fans_can_comment` |
| Paste fails | Check system clipboard permissions |

## Extension Support

Custom configurations via EXTEND.md. See **Preferences** section for paths and supported options.