WeChat File Assistant Bridge

The Problem

When the Windows WeChat PC client lacks a stable local sending API, automation scripts often struggle with UI-level steps such as locating a chat, pasting content, and sending files. This skill connects local computer files with WeChat File Transfer Assistant or a specific contact, aiming to send text and files through simulated user interaction instead of relying on web clients, third-party protocols, or fragile private interfaces.

How It Works And Limits

The skill works through the Windows WeChat PC client, pywin32, clipboard operations, and keyboard simulation. The main flow is:
- Activate the WeChat window using Windows API calls to bring the target window to the foreground.
- Locate the contact by opening search with Ctrl+F, pasting the contact name, and selecting the first result with Enter.
- Send text by pasting the message into the input box and pressing Enter.
- Send files by writing file paths into the CF_HDROP clipboard via PowerShell Set-Clipboard -Path, then pasting with Ctrl+V and confirming with Enter; it supports multiple files.

It offers two invocation shapes: an MCP Server exposing send_message and send_file for clients such as WorkBuddy, and a standalone wechat_sender.py command-line path for scripted integration.

Important limitations include the requirement for a logged-in Windows WeChat client, avoiding mouse or keyboard use during sending to prevent focus loss, re-fetching the WeChat window handle after restarts, and longer waiting for large files because the flow depends on clipboard and UI state.