MCP Test Utils

Claude Desktop:%APPDATA%\Claude\claude_desktop_config.json

{ "mcpServers": { "test-utils": { "command": "D:\\path\\to\\mcp-test-utils.exe" } } }

- Restart Claude Desktop.
- In chat, try:"Take a screenshot"— the agent will return an image of your desktop.

{ "mcpServers": { "test-utils": { "command": "D:\\path\\to\\mcp-test-utils.exe", "env": { "MCP_LOG_DIR": "D:\\path\\to\\logs", "MCP_LOG_MAX_MB": "500", "MCP_LOG_RETAIN_DAYS": "30", "MCP_SEARCH_DIRS": "D:\\Projects\\app1;D:\\Projects\\app2" } } } }

Screenshots support configurable quality to balance detail and token cost:

MCP Test Utils is a JSON-RPC 2.0 server communicating over stdin/stdout. Any MCP-compatible client launches the binary, sends tool calls, and receives structured responses (text, base64 images). Tested with Claude Desktop.

The server uses native Windows APIs directly — Win32 GDI for screenshots,SendInputfor mouse and keyboard, UI Automation COM API for element inspection, WinRTWindows.Media.Ocrfor text recognition. File search uses the ripgrep engine (grep-regex,grep-searcher,ignore) — cross-platform, no external dependencies. No PowerShell, no external tools, no network access.

- Automated QA— agent navigates the app, clicks through flows, takes screenshots at each step, writes a test report
- Desktop automation— fill forms, copy data between windows, run workflows
- Accessibility audit— scan UI Automation tree for missing labels or roles
- Visual regression— screenshot comparison across releases
- Data extraction— OCR text from applications that don't expose APIs
- Code search— find patterns across multiple projects without leaving the agent session

- Responds only to requests from the MCP client
- Opens no network ports
- Writes nothing to disk (except opt-in logging)
- Sends no data externally
- Screenshots capture the entire screen— make sure no sensitive information is visible
- File search is sandboxed— only directories inMCP_SEARCH_DIRSare accessible

Copyright 2026 JeenyJAI. All rights reserved.

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