AAI Gateway vs Countersign

In-depth architectural comparison of the AAI Gateway and Countersign 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 AAI Gateway 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 AAI Gateway Details

Choose Countersign 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 Countersign Details

Feature & Specification Comparison

Specification	AAI Gateway Finance & Fintech	Countersign Finance & Fintech
Summary	Unified MCP & Skill management gateway, shared across AI agents, 99% context token savings	Kill switch + spend guard for AI agents that spend money, across every wallet vendor at once.
Category & Scope	Finance & Fintech	Finance & Fintech

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": {
    "aai-gateway": {
      "command": "npx",
      "args": [
        "-y",
        "aai-gateway"
      ]
    }
  }
}

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

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