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.

Preferences (EXTEND.md)

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

# 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) → 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

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

Recommended EXTEND.md example:

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.

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:

Image-Text Posting (图文)

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

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 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

Plain Text Handling:

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

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:

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

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):

2. Execute conversion (using the discovered skill):

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).

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):

If API Selected - Check Credentials:

# 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:

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:

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

Feature Comparison

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

Extension Support

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