addertest-xpc-mcp MCP Server
XPC-hosted MCP server for macOS delivered via uvx
addertest-xpc-mcp is a Developer Tools MCP (Model Context Protocol) server: XPC-hosted MCP server for macOS delivered via uvx. It is MIT-licensed and self-hosted from its source repository. Listed on MCP Collection since October 2026.
About addertest-xpc-mcp
Proof of concept: an MCP server delivered by uvx, hosted in an XPC LaunchAgent on macOS. A signed macOS app bundle registers as a LaunchAgent; a dumb stdio bridge forwards JSON-RPC to a single long-lived host that can hold TCC grants once and share them across MCP clients. MIT license. Install: uvx addertest-xpc-mcp. GitHub: https://github.com/drewster99/addertest-xpc-mcp — PyPI: https://pypi.org/project/addertest-xpc-mcp/
How to connect addertest-xpc-mcp to Claude, Cursor or VS Code
addertest-xpc-mcp is self-hosted. Install it from the source repository, then register its start command in your MCP client's config (Claude Code, Cursor, Windsurf or VS Code).
{
"mcpServers": {
"addertest-xpc-mcp": {
"command": "<start command from the README>",
"args": []
}
}
}The exact command (often npx, uvx or docker) is in the project README at github.com/drewster99/addertest-xpc-mcp.
addertest-xpc-mcp FAQ
What is addertest-xpc-mcp?
addertest-xpc-mcp is a Model Context Protocol (MCP) server in the Developer Tools category. XPC-hosted MCP server for macOS delivered via uvx. MCP servers expose tools that AI assistants like Claude can call during a conversation.
How do I use addertest-xpc-mcp with Claude or Cursor?
addertest-xpc-mcp is self-hosted. Install it from the source repository, then register its start command in your MCP client's config (Claude Code, Cursor, Windsurf or VS Code).
Is addertest-xpc-mcp free to use?
addertest-xpc-mcp is published under the MIT license, so the software itself is free to run. Hosted or API-backed servers may have their own usage tiers; check the project homepage.
Where is the source code for addertest-xpc-mcp?
The source is at github.com/drewster99/addertest-xpc-mcp.