Onyx MCP vs JMT x402 Agent Tools

In-depth architectural comparison of the Onyx MCP and JMT x402 Agent Tools 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 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

Choose JMT x402 Agent Tools 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 JMT x402 Agent Tools Details

Feature & Specification Comparison

Specification	Onyx MCP Finance & Fintech	JMT x402 Agent Tools Finance & Fintech
Summary	Ed25519-signed ground-truth oracle — 63 paid x402 tools live on Base mainnet.	25 x402 paid API tools for AI agents 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": {
    "onyx-mcp-2": {
      "command": "uvx",
      "args": [
        "onyx-paid-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "jmt-x402-agent-tools": {
      "command": "npx",
      "args": [
        "-y",
        "jmt-x402-agent-tools"
      ]
    }
  }
}

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