402Signal vs Nexflow Smf

In-depth architectural comparison of the 402Signal and Nexflow Smf 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?

4

Choose 402Signal 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 402Signal Details

Choose Nexflow Smf when:

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

Explore Nexflow Smf Details

Feature & Specification Comparison

Specification	4 402Signal Finance & Fintech	Nexflow Smf Finance & Fintech
Summary	Fail-closed live-endpoint x402 router. POST /route, $0.01 USDC on Base, Solana, Algorand.	Smart Meta-Facilitator for x402 payments on Base: route, verify, and settle payments.
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": {
    "402signal": {
      "command": "npx",
      "args": [
        "-y",
        "402signal"
      ]
    }
  }
}

{
  "mcpServers": {
    "nexflow-smf": {
      "url": "https://api.nexflowapp.app/.well-known/skills"
    }
  }
}

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