Umbra open SAR archive vs Valet

In-depth architectural comparison of the Umbra open SAR archive and Valet 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?

U

Choose Umbra open SAR archive 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 Umbra open SAR archive Details

Choose Valet when:

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

Explore Valet Details

Feature & Specification Comparison

Specification	U Umbra open SAR archive Developer Tools	Valet Developer Tools
Summary	Search, quicklook and measure Umbra's open SAR archive from any MCP client.	Get share links, publish and manage websites, artifacts and agents. No account needed.
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": {
    "umbra-open-sar-archive": {
      "command": "uvx",
      "args": [
        "--from"
      ]
    }
  }
}

{
  "mcpServers": {
    "valet": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ]
    }
  }
}

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