once MCP Server

Name: once MCP Server
Author: io.github.aurumflux20

io.github.aurumflux20/once-kernel

What is the once MCP server?

Run a side effect exactly once under retries, redelivery, and concurrent workers.

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "once-kernel": {
      "command": "uvx",
      "args": [
        "once-kernel"
      ]
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "once-kernel": {
      "command": "uvx",
      "args": [
        "once-kernel"
      ]
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "once-kernel": {
      "command": "uvx",
      "args": [
        "once-kernel"
      ]
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "once-kernel": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "once-kernel"
      ]
    }
  }
}

Claude Code

claude mcp add once-kernel -- uvx once-kernel

Active

Stops agents double-firing side effects: 1,000 racing duplicates, exactly one execution.

Rust

MIT