WeChat Publisher Skill

Publish Markdown articles to WeChat Official Account draft box.

Prerequisites

1. Create config.json in the skill root (copy from config.example.json), or set env vars WX_APPID / WX_APPSECRET (recommended for secrets).
2. Python 3 available (python3)
3. All scripts are in scripts/ relative to this SKILL.md

For full API details, read references/wechat_api.md.

Workflow

Step 1 — Gather inputs

Ask the user (or infer from context):

• Article: path to .md file
• Cover image (required): local image file for the article thumbnail (jpg/png, ≤1MB)
• Body images (optional): local image files referenced in the article
• Title: article title (use H1 from markdown if not specified)
• Author (optional)
• Digest/summary (optional, ≤120 chars)

Step 2 — Upload cover image → get thumb_media_id

THUMB_ID=$(python3 scripts/upload_thumb.py cover.jpg)

Step 3 — Upload body images → build image map

For each body image referenced in the article:

WX_URL=$(python3 scripts/upload_img.py images/fig1.png)

Build a JSON map of local filenames to WeChat CDN URLs:

{"fig1.png": "http://mmbiz.qpic.cn/...", "fig2.jpg": "http://..."}

Save as /tmp/image_map.json.

Skip this step if the article has no inline images.

Step 4 — Convert Markdown to HTML

# Without images:
python3 scripts/md_to_html.py article.md > /tmp/article.html

# With image map:
python3 scripts/md_to_html.py article.md --image-map /tmp/image_map.json > /tmp/article.html

Step 5 — Upload draft

python3 scripts/upload_draft.py \
  --title "文章标题" \
  --html /tmp/article.html \
  --thumb-media-id "$THUMB_ID" \
  --author "作者名" \
  --digest "文章摘要"

Output: media_id of the created draft.

The draft appears in the WeChat MP backend at: https://mp.weixin.qq.com → 草稿箱

Step 6 — Confirm

Tell the user:

• ✅ Draft uploaded successfully
• Draft media_id: XXX
• View in WeChat MP backend: https://mp.weixin.qq.com (草稿箱)

Error Handling

Notes

• Access tokens are cached in .token_cache.json (auto-refreshed when expired)
• WeChat only accepts images hosted on WeChat CDN — always upload images first
• The draft is saved but NOT published; user must publish manually from MP backend or via /cgi-bin/freepublish/submit
• Subscription accounts (订阅号) may have limited publishing frequency (once per day/week)