Arcstone MCP Sidecar vs LeClap

In-depth architectural comparison of the Arcstone MCP Sidecar and LeClap 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?

A

Choose Arcstone MCP Sidecar when:

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

Explore Arcstone MCP Sidecar Details

Choose LeClap when:

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

Explore LeClap Details

Feature & Specification Comparison

Specification	A Arcstone MCP Sidecar Developer Tools	LeClap Developer Tools
Summary	Deterministic execution boundary and reference MCP sidecar for Arcstone Security Stack	Compose and render video from one JSON template. Deterministic, runs locally, no generative model.
Category & Scope	Developer Tools	Developer Tools
Quality signal

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": {
    "arcstone-mcp-sidecar": {
      "command": "npx",
      "args": [
        "-y",
        "arcstone-mcp-sidecar"
      ]
    }
  }
}

{
  "mcpServers": {
    "leclap": {
      "command": "npx",
      "args": [
        "-y",
        "@leclap/cli"
      ]
    }
  }
}

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