Fauxnix vs When

In-depth architectural comparison of the Fauxnix and When MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Fauxnix when:

• You need dedicated capabilities in the Command Line domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Fauxnix Details

Choose When when:

• You need dedicated capabilities in the Command Line domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Single MCP server exposing eight endpoints for six tools, Auto-detect stack and regenerate context files, Port conflict scanning.

Explore When Details

Feature & Specification Comparison

Specification	Fauxnix 20000419 Command Line	When WhenLabs-org Command Line
Summary	bash for AI agents on Windows via deterministic bash→PowerShell translation — no WSL, VM, or bash toolchain. MCP bash tool with GNU-style output, bash-style errors, coreutils exit codes, session-persisted cwd/env across calls, and per-file UTF-8/GBK sniffing (GBK files grep correctly, unlike Git Bash). Unsupported bash constructs fail loudly with the construct named; native commands (git/node/npm) pass through with argv quoting. npm install -g fauxnix-cli; verified with Claude Code, Codex, OpenCode, Kimi Code and Qwen Code.	Developer toolkit: auto-detect stack for AI context files, catch port conflicts, validate .env schemas, spot docs drift, audit dependency licenses, and time coding tasks — 7 MCP tools, one install.

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "20000419-fauxnix": {
      "command": "npx",
      "args": [
        "-y",
        "20000419-fauxnix"
      ]
    }
  }
}

{
  "mcpServers": {
    "whenlabs-org-when": {
      "command": "npx",
      "args": [
        "-y",
        "@whenlabs/when"
      ]
    }
  }
}

Related MCP Server Comparisons