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Traa-MCP
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TRAA MCP Server
TRAA MCP Server is a screen capture server based on the Model Context Protocol (MCP). It provides functionality for enumerating system screens and windows, as well as capturing screenshots. The server communicates with clients through the MCP protocol, supporting both standard input/output (stdio) and Server-Sent Events (SSE) transport methods.
Features
-
Screen and Window Source Enumeration
- List all available displays in the system
- List all available windows in the system
- Each source includes ID, title, type (display/window), and position information
-
Screen Capture
- Capture screenshots of any display or window
- Customizable screenshot dimensions
- Support for both JPEG and PNG formats
- Configurable image quality settings
- Automatic directory creation for saving files
Tools
-
enum_screen_sources
- Enumerate all screen and window sources available on the system and return a list of SimpleScreenSourceInfo
- Returns: list[SimpleScreenSourceInfo]
-
create_snapshot
- Create a snapshot of the screen source with the given ID and return it as an image
- Inputs:
- source_id: int
- snapshot_size: tuple[int, int]
- Returns: Image
-
save_snapshot
- Save a snapshot of the screen source with the given ID to a file
- Inputs:
- source_id: int
- snapshot_size: tuple[int, int]
- file_path: str
- Returns: None
Example
Usage
Configure MCP Servers
Claude Desktop or other AI agents
{
"mcpServers": {
"traa_mcp": {
"command": "absolute/path/to/uv",
"args": [
"--directory",
"absolute/path/to/traa-mcp",
"run",
"traa_mcp_server"
]
}
}
}
Server Side
The server supports two running modes:
- stdio mode (default):
uv run traa_mcp_server
- SSE mode (with port specification):
uv run traa_mcp_server-sse --port 3001(default)
Client Side
The client provides an interactive command-line interface for easy access to server functionality:
uv run traa_mcp_client
After starting, the client displays a list of all available tools. You can:
- Use
enum_screen_sources
to view all available screen and window sources - Use
create_snapshot
to capture screenshots and get image data - Use
save_snapshot
to save screenshots directly to files
Image Format Support
-
JPEG Format
- Best for screenshots with many colors
- Smaller file size
- Quality setting available (1-100)
- Automatically converts to RGB color space
-
PNG Format
- Best for screenshots with text or sharp edges
- Lossless compression
- Supports transparency (RGBA)
- Larger file size but better quality
Dependencies
- Python >= 3.10
- mcp >= 1.0.0
- anyio >= 4.5
- traa >= 0.1.5
- pillow >= 11.1.0 (for image processing)
Notes
- For MCP model compatibility, JPEG format with quality=60 is used by default to keep file sizes under 1MB
- When saving files, parent directories are automatically created if they don't exist
- Error handling includes detailed messages for easier troubleshooting
License
See the LICENSE file for details.
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Reviews

user_G8uqk70E
As a devoted user of traa-mcp, I am thoroughly impressed with its performance and functionality. Opentraa has done a fantastic job creating a robust tool that integrates seamlessly into my workflow. The user experience is intuitive, and the documentation available on their GitHub page is comprehensive. I highly recommend traa-mcp for anyone looking for a reliable solution in this domain.