Devtools vs Casper Tools

In-depth architectural comparison of the Devtools and Casper Tools 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 Devtools 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 Devtools Details

Choose Casper Tools when:

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

Explore Casper Tools Details

Feature & Specification Comparison

Specification	Devtools Developer Tools	Casper Tools Developer Tools
Summary	23 developer utilities — base64, JWT, UUID, hash, QR, regex, timestamps. No API keys.	8 agent utilities: JSON inspection, regex, cron, hash, base64, URL, color, diff.
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": {
    "devtools": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-devtools-server"
      ]
    }
  }
}

{
  "mcpServers": {
    "casper-tools-2": {
      "url": "http://localhost:3000/mcp"
    }
  }
}

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