Build vs N8n Workflow Tester Safe

In-depth architectural comparison of the Build and N8n Workflow Tester Safe 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 Build 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).
• Primary tools included: Schema-validated structured JSON output, Human-readable MCP content output, TypeScript compiler support.

Explore Build Details

Choose N8n Workflow Tester Safe when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: N8N_BASE_URL, N8N_API_KEY.
• Primary tools included: test_workflow, evaluate_workflow_result, run_workflow_suite.

Feature & Specification Comparison

Specification	Build Developer Tools	N8n Workflow Tester Safe Souzix76 Developer Tools
Summary	Structured build tool output (tsc, generic commands) as typed JSON diagnostics.	Test, score, and inspect n8n workflows via MCP. Config-driven test suites with two-tier scoring, lightweight execution traces, and a built-in node catalog with 436+ nodes.
Category & Scope	Developer Tools

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": {
    "build": {
      "command": "npx",
      "args": [
        "-y",
        "@paretools/init"
      ]
    }
  }
}

{
  "mcpServers": {
    "souzix76-n8n-workflow-tester-safe": {
      "command": "npx",
      "args": [
        "-y",
        "souzix76-n8n-workflow-tester-safe"
      ],
      "env": {
        "N8N_BASE_URL": "YOUR_N8N_BASE_URL_HERE",
        "N8N_API_KEY": "YOUR_N8N_API_KEY_HERE"
      }
    }
  }
}

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