Opus Growth vs X402 API

In-depth architectural comparison of the Opus Growth and X402 API 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 Opus Growth when:

• You need dedicated capabilities in the Marketing domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: OAuth 2.0 (Freemium).
• Primary tools included: Hosted MCP endpoint, Google OAuth sign-in, Five supported advertising platforms.

Explore Opus Growth Details

Choose X402 API when:

• You need dedicated capabilities in the Marketing domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: HTTP 402 payment-required responses, Client payment payload creation, Local or facilitator-based verification.

Explore X402 API Details

Feature & Specification Comparison

Specification	Opus Growth VerifiedMarketing	X402 API Marketing
Summary	Hosted, OAuth-protected MCP server for advertising operations. One connector covers Google Ads, Meta Ads, Microsoft Advertising, TikTok Ads and LinkedIn Ads, plus Search Console, GA4, YouTube, Tag Manager and Google Business Profile. Every write returns a dry-run preview and is applied only after explicit confirmation.	AI API for marketing, content and outreach. 22 endpoints. Pay with USDC on Base via x402.
Category & Scope

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": {
    "opus-growth": {
      "url": "https://mcp.opus-growth.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "x402-api-2": {
      "command": "uvx",
      "args": [
        "x402"
      ]
    }
  }
}

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