LaunchCheck x402 vs Onyx MCP

In-depth architectural comparison of the LaunchCheck x402 and Onyx MCP 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?

L

Choose LaunchCheck x402 when:

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

Explore LaunchCheck x402 Details

Choose Onyx MCP when:

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

Explore Onyx MCP Details

Feature & Specification Comparison

Specification	L LaunchCheck x402 Finance & Fintech	Onyx MCP Finance & Fintech
Summary	Paid x402 MCP tool for stress-testing launch and marketing copy before publication.	Ed25519-signed ground-truth oracle — 63 paid x402 tools live on Base mainnet.
Category & Scope	Finance & Fintech	Finance & Fintech
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": {
    "launchcheck-x402": {
      "command": "npx",
      "args": [
        "-y",
        "launchcheck-x402"
      ]
    }
  }
}

{
  "mcpServers": {
    "onyx-mcp-2": {
      "command": "uvx",
      "args": [
        "onyx-paid-mcp"
      ]
    }
  }
}

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