GrayMatter vs HarnessScope

In-depth architectural comparison of the GrayMatter and HarnessScope 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 GrayMatter when:

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

Explore GrayMatter Details

Choose HarnessScope when:

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

Explore HarnessScope Details

Feature & Specification Comparison

Specification	GrayMatter Monitoring	HarnessScope Monitoring
Summary	Persistent agent memory as a single Go binary: knowledge graph, TUI observability, zero infra.	Turn-level governance observability for Claude Code transcripts. Local-first, no LLM inside.
Category & Scope	Monitoring	Monitoring
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": {
    "graymatter": {
      "url": "https://graymatter.nickcerutti.workers.dev"
    }
  }
}

{
  "mcpServers": {
    "harnessscope": {
      "command": "npx",
      "args": [
        "-y",
        "hscope"
      ]
    }
  }
}

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