Qwen Web Bridge Plugin

A small local plugin that lets an agent (or any local process) drive an already logged-in Qwen web session in Edge/Chrome. It was originally built to ask Qwen3.8-Max from WSL without touching the login state.

agent / harness
      |
      | HTTP JSON (127.0.0.1:17172)
      v
bridge_server.py  <------->  Qwen Web Bridge (browser extension)
                                  |  tabs / scripting / debugger / cookies
                                  v
                    logged-in qwen.ai or qianwen.com tab

Contents

• extension/ — Manifest V3 browser extension (unpacked).
• bridge/bridge_server.py — stdlib-only Python bridge server.
• bridge/client.py — tiny command-line client.
• plugin.json — optional metadata, adjust to the target harness schema if needed.
• examples/ — ready-to-use command recipes.

1. Load the extension

1. Open edge://extensions (or chrome://extensions).
2. Enable Developer mode.
3. Click Load unpacked and select extension/.
4. Pin the extension if you want to see its badge.

The extension polls http://127.0.0.1:17172 for commands. It does not phone home anywhere else.

2. Start the bridge server

python3 bridge/bridge_server.py --bind 127.0.0.1 --port 17172

On WSL2, Windows browsers can normally reach this WSL listener through http://127.0.0.1:17172.

3. Send commands

python3 bridge/client.py --action getTabs
python3 bridge/client.py --action getInfo
python3 bridge/client.py --action eval --expression "document.title"
python3 bridge/client.py --action navigate --params '{"url":"https://www.qianwen.com/"}'
python3 bridge/client.py --action getCookies --params '{"domains":["qianwen.com","aliyun.com"]}'

Use --raw '<json-command>' for anything else.

Supported actions

Security notes

• The bridge server listens on loopback by default; do not bind 0.0.0.0 on a shared network.
• getCookies / getAllCookies expose browser login material. Only use them for local automation; never log or commit cookie values.
• The extension requests cookies and debugger permissions because that is what logged-in web automation requires. Review the manifest before publishing to a public plugin registry.

Example: ask Qwen3.8-Max on qianwen.com

See examples/qianwen_ask.md.

DeepSeek Harness integration

This project is published as a dsh-plugin for DeepSeek Harness. It does not need to run inside the Harness process: the Harness agent can call it through its shell tool with bridge/client.py, or through any HTTP client on 127.0.0.1:17172.

A compact workflow:

python3 bridge/bridge_server.py &
python3 bridge/client.py --action navigate --params '{"url":"https://www.qianwen.com/"}'
python3 bridge/client.py --action eval --params '{"expression":"document.title"}'

See examples/qianwen_ask.md for a complete Qwen3.8-Max question-and-answer flow.

Repository

• GitHub: https://github.com/Andy294753951/dsh-plugin-qwen-web-bridge
• Topic: dsh-plugin