ywza

Let an AI model use your PC, from anywhere.
Demo • Build • Quick start • Pairing • MCP • Linux

ywza lets an AI model use your computer the way you do. It can look at your windows, click and type in any app, and work
in the terminals you already have open. You can talk to it from the same machine or from another one, and nothing has to
be exposed to the internet to make that work.

It runs as a small background agent on the PC you want to control. Other devices connect to it directly, peer to peer,
after you pair them once with a 6-digit code. There is no account and no server to host. You bring your own model:
anything that speaks the OpenAI chat API works, including local ones like Ollama and LM Studio.

Instead of sending the model a screenshot at every step, ywza describes each window as a numbered list of elements. That
keeps the token count low and the model's reasoning focused. It can still ask for a screenshot when it needs to see
something.

ywza works perfectly on Windows. Linux works on X11.

Demo

Build

You need a recent Rust toolchain. On Windows, the MSVC build tools that rustup asks for are enough.

git clone https://github.com/alielmorsy/ywza
cd ywza
cargo build --release

This produces two programs in target/release:

Put both on your PATH, or install them with cargo:

cargo install --path crates/ywza-agent
cargo install --path crates/ywza-cli

OCR

Some apps draw their own text and expose nothing to Windows accessibility. For those, build the agent with an OCR
engine. You can compile several in and pick one in the config.

cargo build --release -p ywza-agent --features ocr-windows

PaddleOCR models download on first use. ocr-paddle-dynamic replaces ocr-paddle, so don't enable both. It needs
libonnxruntime.so next to the agent binary, or at the path in ORT_DYLIB_PATH.

Quick start

Start the agent:

ywza-agent run

The first launch creates your config folder and the agent's identity. Point it at a model:

ywza config set-llm --base-url https://api.openai.com/v1 --model <model> --api-key <key>

Then give it something to do:

ywza prompt "Open Notepad and write hello"

Control it from another device

On the machine you want to control, ask the running agent for a pairing code:

ywza-agent pair

On the device you want to control it from:

ywza pair 123456 --name desktop
ywza -d desktop prompt "Take a screenshot and tell me what's open"

The code works once and expires after 10 minutes. On Windows, if the connection times out, run
dist/windows-firewall.bat as administrator with the path to ywza-agent.exe.

Use it from an MCP client

The MCP server gives any MCP client control of this PC and of every device you have paired, through one server. The model
picks the device per call, so a single chat can work on your desktop and a remote machine side by side.

Paired devices don't need to be on the same network. They connect through public relays, so a laptop on a coffee shop
wifi can drive a PC at home. Own relay support is planned, so you will be able to run your own instead of the public
ones.

Register it straight from the repo, no install step. Replace <repo> with the folder you cloned ywza into:

claude mcp add ywza -- uv run --quiet --project <repo>/python ywza-mcp --cli <repo>/target/release/ywza.exe

On Linux the last path is <repo>/target/release/ywza. --cli is how the server reaches your paired devices, so
it can be left out if ywza is already on your PATH or you only control this PC. Any other MCP client can run the same
command.

Linux

Only X11 sessions are supported. dist/ywza-agent.service runs the agent on the login screen and in every user
session. Edit the ExecStart path, then follow the comments at the top of the file.