# Goose App Maker

This MCP (Model Context Protocol) sever allows users to create, manage, and serve web applications through Goose.

## Features

- Create new web applications from basic instructions
- Store apps in `~/.config/goose/app-maker-apps` directory (each app in its own subdirectory)
- Serve web applications locally on demand
- Open web applications in the default browser (and chromeless if possible)
- Lists all available web applications
- make apps that can themselves use goose as a generic backend


## Examples 

### Run productivity apps and dynamic dashboards

goose keeps track of your apps: 

<img width="682" alt="Screenshot 2025-04-28 at 7 35 46 pm" src="https://github.com/user-attachments/assets/6799833d-1edb-48f3-9061-656383f646fd" />

### Load data via goose (re-using its extensions)

![Screenshot 2025-04-28 at 7 38 24 pm](https://github.com/user-attachments/assets/260e3c29-8aee-4492-87e5-7f20fe8a8e41)

![Screenshot 2025-04-28 at 7 38 53 pm](https://github.com/user-attachments/assets/473730e6-350c-4af2-8797-39b505b6748b)


### Make apps on demand

<img width="400" alt="Screenshot 2025-04-28 at 6 24 09 pm" src="https://github.com/user-attachments/assets/5b2d0a5b-9012-4f67-80e1-e61641bdb45a" />

<img width="300" alt="Screenshot 2025-04-28 at 6 31 06 pm" src="https://github.com/user-attachments/assets/a856fc51-8476-4e39-afbb-99302f7e43c7" />

### Show rich tabular or list data as well

<img width="722" alt="Screenshot 2025-04-28 at 6 32 22 pm" src="https://github.com/user-attachments/assets/068e6dce-48b1-4fc0-b769-114961302d69" />


## Usage from source

eg in goose: 
```sh
# Run directly from source
uv --directory $PWD run python main.py
```

IMPORTANT: this MCP is required to be run in the goose desktop app at the moment (as it accesses goose-server/goosed)

## Building and publishing

### Optional: Build in a clean environment using uv

```sh
uv venv .venv
source .venv/bin/activate
uv pip install build
python -m build
```

### Publishing

1. Update version in `pyproject.toml`:

```toml
[project]
version = "x.y.z"  # Update this
```

2. Build the package:

```bash
# Clean previous builds
rm -rf dist/*
python -m build
```

3. Publish to PyPI:

```bash
# Install twine if needed
uv pip install twine

# Upload to PyPI
python -m twine upload dist/*
```

# How it works

This MCP serves up apps, but also allows them to talk to goose via goosed and their own session: 

## Overview

The system implements a non-blocking, asynchronous request-response pattern that allows web applications to send requests to Goose and receive responses without blocking the main thread. This is achieved through a combination of:

1. A blocking endpoint on the server side
2. Asynchronous JavaScript on the client side
3. A response storage mechanism with thread synchronization

### Web App Structure

Web apps are made (or downloaded) on request, based on resources/templates. 
Each web app is stored in its own directory under `~/.config/goose/app-maker-apps` with the following structure:

```
app-name/
├── goose-app-manifest.json     # App metadata
├── index.html        # Main HTML file
├── style.css         # CSS styles
├── script.js         # JavaScript code
└── goose_api.js      # allows the apps to access goose(d) for deeper backend functionality
└── ...               # Other app files

```

The `goose-app-manifest.json` file contains metadata about the app, including:
- name: Display name of the app
- type: Type of app (e.g., "static", "react", etc.)
- description: Brief description of the app
- created: Timestamp when the app was created
- files: List of files in the app


### 1. Client-Side Request Flow

When a client wants to get a response from Goose:

```
┌─────────┐     ┌─────────────────┐     ┌───────────────┐     ┌──────────────┐
│ User    │────▶│ gooseRequestX() │────▶│ Goose API     │────▶│ waitForResp- │
│ Request │     │ (text/list/     │     │ (/reply)      │     │ onse endpoint │
└─────────┘     │  table)         │     └───────────────┘     └──────────────┘
                └─────────────────┘                                   │
                         ▲                                            │
                         │                                            │
                         └────────────────────────────────────────────┘
                                          Response
```

1. The user initiates a request (e.g., clicking "Get List Response")
2. The client calls one of the request functions (`gooseRequestText`, `gooseRequestList`, or `gooseRequestTable`)
3. The function generates a unique `responseId` and sends a request to Goose with instructions to call `app_response` with this ID
4. The function then calls `waitForResponse(responseId)` which polls the `/wait_for_response/{responseId}` endpoint
5. This endpoint blocks until the response is available or a timeout occurs
6. When the response is available, it's returned to the client and displayed

### 2. Server-Side Processing

On the server side:

```
┌─────────────┐     ┌─────────────┐     ┌───────────────┐
│ HTTP Server │────▶│ app_response│────▶│ response_locks│
│ (blocking   │     │ (stores     │     │ (notifies     │
│  endpoint)  │◀────│  response)  │◀────│  waiters)     │
└─────────────┘     └─────────────┘     └───────────────┘
```

1. The `/wait_for_response/{responseId}` endpoint uses condition variables to block until a response is available
2. When Goose processes the request, it calls the `app_response` function with the response data and the `responseId`
3. The `app_response` function stores the response in the `app_responses` dictionary and notifies any waiting threads using the condition variable
4. The blocked HTTP request is then unblocked and returns the response to the client

### 3. Thread Synchronization

The system uses Python's `threading.Condition` for thread synchronization:

1. When a client requests a response that isn't available yet, a condition variable is created for that `responseId`
2. The HTTP handler thread waits on this condition with a timeout (30 seconds)
3. When the response becomes available, the condition is notified
4. If the timeout expires before the response is available, an error is returned

## Key Components

### Client-Side Functions

- `gooseRequestText(query)`: Requests a text response
- `gooseRequestList(query)`: Requests a list response
- `gooseRequestTable(query, columns)`: Requests a table response with specified columns
- `waitForResponse(responseId)`: Waits for a response with the given ID

### Server-Side Functions

- `app_response(response_id, string_data, list_data, table_data)`: Stores a response and notifies waiters
- HTTP handler with `/wait_for_response/{responseId}` endpoint: Blocks until response is available
