What is the key difference between Dns Doctor and ARBuilder?

Dns Doctor belongs to the Communication category with local stdio execution, while ARBuilder belongs to the Communication category with local stdio execution.

How do I install Dns Doctor or ARBuilder in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Dns Doctor and ARBuilder free or paid?

Dns Doctor operates under a Free / Open Source model (No auth required). ARBuilder operates under a Freemium model (API Key required).

Which MCP server has more tools and community activity?

Dns Doctor lists 17 tools with 0 views and 2 GitHub stars. ARBuilder lists 19 tools with 2 views and 24 GitHub stars.

Can I use both Dns Doctor and ARBuilder together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Dns Doctor vs ARBuilder

In-depth architectural comparison of the Dns Doctor and ARBuilder 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.

At a Glance & Executive Verdict

Dns Doctor

Communication · Local stdio

Quality: 53/100 (Good) | Auth: No auth required

ARBuilder

Communication · Local stdio

Quality: 56/100 (Good) | Auth: API Key required

Verdict Summary: Choose Dns Doctor if you need specialized Communication tools running via a local process. Choose ARBuilder if your workspace requires Communication integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Dns Doctor when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: scan_domain, get_report, build_dmarc_upgrade.

Explore Dns Doctor Details

Choose ARBuilder when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Freemium).
You have access to required keys: ARBUILDER_API_KEY.
Primary tools included: get_stylus_context, generate_stylus_code, ask_stylus.

Explore ARBuilder Details

Feature & Specification Comparison

Specification	Dns Doctor Communication	ARBuilder Quantum3-Labs Communication
Summary	DNS Doctor: scan and fix email authentication (SPF, DMARC, DKIM, MX, blacklists). Validated fixes.	AI-powered code generator for the Arbitrum ecosystem. 19 MCP tools for Stylus smart contracts, SDK bridging, full-stack dApps, and Orbit chain deployment, backed by RAG-based retrieval over Arbitrum documentation.
Category & Scope	Communication

Tools & Capabilities Breakdown

Dns Doctor Tools (17)

scan_domain

Fresh scan of a domain; full report.

get_report

Persisted report (scans once if none exists).

build_dmarc_upgrade

A validated DMARC enforcement record, capped at `p=quarantine` and returned only when the server-derived alignment gate passes; without that evidence the answer is reporting-first and no record is returned. `p=reject` comes from the readiness engine's aggregate-report evidence, never from a scan.

count_spf_lookups

The SPF DNS-lookup count against the RFC limit of 10.

validate_dmarc_record

Parse and validate a DMARC record, tag by tag.

generate_dmarc_record

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).

Dns Doctor Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "dns-doctor": {
      "command": "npx",
      "args": [
        "-y",
        "@dnsdoctor/mcp"
      ]
    }
  }
}

ARBuilder Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "quantum3-labs-arbuilder": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote"
      ],
      "env": {
        "ARBUILDER_API_KEY": "YOUR_ARBUILDER_API_KEY_HERE"
      }
    }
  }
}

Frequently Asked Questions

Dns Doctor is categorized under Communication and uses a local stdio subprocess. In contrast, ARBuilder belongs to Communication using local stdio subprocess. Select Dns Doctor when you need capabilities focused on communication and ARBuilder when you require tools for communication.

More alternatives to Dns Doctor More alternatives to ARBuilder Communication category hub