Hwcontract vs Stack Chan

In-depth architectural comparison of the Hwcontract and Stack Chan 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 Hwcontract when:

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

Explore Hwcontract Details

Choose Stack Chan when:

• You need dedicated capabilities in the Embedded System domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: JavaScript-driven M5Stack robot firmware, MCP functionality for AI-controlled interactions and emotions, Browser-based firmware installer and device tools.

Explore Stack Chan Details

Feature & Specification Comparison

Specification	Hwcontract Embedded System	Stack Chan stack-chan Embedded System
Summary	Judge hardware timing/serial against a contract: pass/marginal/fail (WS2812, DShot, logs)	A JavaScript-driven M5Stack-embedded super-kawaii robot with MCP server functionality for AI-controlled interactions and emotions.
Category & Scope	Embedded System	Embedded System

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": {
    "hwcontract": {
      "command": "uvx",
      "args": [
        "hwcontract"
      ]
    }
  }
}

{
  "mcpServers": {
    "stack-chan-stack-chan": {
      "command": "npx",
      "args": [
        "-y",
        "stack-chan-stack-chan"
      ]
    }
  }
}

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