NASOpenClawRunTime/memory/2026-04-24.md

Memory · 2026-04-24

WeChat Image Sending — Root Cause Findings

1. Gateway sendMedia is QQBot-only (Platform Bug)

• Gateway imports sendMedia from outbound-CkazH4Wl.js which is QQBot-exclusive
• WeChat plugin's sendMedia in channel.ts:205 is never called by the gateway
• All outbound messages log mediaUrl=none — images are NOT sent via this path
• Workaround: Using MEDIA:./assets/<filename> directive in reply works — Tyrone received images this way
• The image_generate tool output IS sent correctly via MEDIA: path

2. Browserless Screenshot Blank Issue (mp.weixin.qq.com)

• Browserless returns 2685-byte solid-color PNG for mp.weixin.qq.com (anti-bot protection)
• GitHub and taobao.com/login also return blank/placeholder
• Normal pages (e.g., baidu.com) CAN be screenshot successfully (48071 bytes real PNG)
• The browser tool has intermittent "timed out" / "No connected browser-capable nodes" failures
• Browserless CDP is reachable at ws://browserless:3000

3. QR Code Generation — AI refuses scannable QR codes

• image_generate tool cannot produce scannable QR codes (MiniMax has anti-fraud training that blocks QR code generation)
• api.qrserver.com returns wrong content ("Happy Halloween!") for all URLs
• My hand-written QR encoder (gen-qr-png.cjs) produces technically valid QR but the resulting PNG from ImageMagick conversion has precision loss and won't scan
• Solution options: (a) install qrencode on群晖, (b) use browserless to screenshot a real login QR from a site that works (taobao login worked), (c) Tyrone logs in manually at mp.weixin.qq.com

4. WeChat QR Login URL

• URL: https://mp.weixin.qq.com/cgi-bin/scanloginqrcode?action=getqrcode&random=<epoch>&login_appid= — session-based, expires
• Cannot be fetched via curl (requires browser session cookies)
• Must use browser with WeChat logged-in session to access

5. Valid Reference Images

• wechat-open-qr.png (105378 bytes) — valid QR from earlier session, stored at workspace/assets/screenshot-test/
• Test circle PNG sent successfully — confirmed WeChat CAN receive images via MEDIA: directive

6. Successful Screenshot Targets

• baidu.com → 48071 bytes real PNG via browserless
• taobao.com/login → real login QR code screenshot works

Key Decisions This Session

• Using MEDIA:./assets/<filename> for image delivery (not gateway sendMedia)
• WeChat channel sendText works fine; only images have routing issues
• Browserless HTTP API (POST /screenshot) more reliable than browser tool for some targets