A2a Trustgate vs Fidacy MCP

In-depth architectural comparison of the A2a Trustgate and Fidacy 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?

Choose A2a Trustgate when:

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

Explore A2a Trustgate Details

Choose Fidacy MCP when:

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

Explore Fidacy MCP Details

Feature & Specification Comparison

Specification	A2a Trustgate Developer Tools	Fidacy MCP Developer Tools
Summary	A2A TrustGate: 4-gate firewall that screens every AI-agent action before it runs. 49 tools.	Action firewall for AI agents: blocks the wrong action before it runs, every verdict Ed25519-signed.
Category & Scope	Developer Tools	Developer Tools
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": {
    "a2a-trustgate": {
      "command": "npx",
      "args": [
        "-y",
        "a2a-trustgate"
      ]
    }
  }
}

{
  "mcpServers": {
    "fidacy-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "fidacy-mcp"
      ]
    }
  }
}

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