Claude Code / MCP Quick Start — A2A Infrastructure

Claude Code / Claude Web / MCP

Connect A2A TrustGate to Claude — from the browser or the terminal. No install needed for Claude web.

Option A: Claude Web No install

Works directly in your browser at claude.ai or chatgpt.com. Just paste your API key.

Step 1: Get your API key

Step 2: Add the remote MCP server

In Claude web, go to Settings → MCP Servers → Add Server:

// Server URL:
https://mcp.a2ainfrastructure.com

// Authentication:
a2a_YOUR_API_KEY

// That's it. 18 safety tools are now available.
// Works with: Claude web, ChatGPT (Developer Mode), and any MCP client.

Step 3: Use it

Ask Claude to screen a command before running it:

# In Claude web, just ask:
"Check if this command is safe: rm -rf /tmp/data"

# Claude calls a2a_evaluate automatically
# → Returns: blocked (destructive operation)

18 tools available: evaluate, audit, usage, pipelines, approvals, devices, killswitch, and more. Claude discovers them automatically.

Option B: Claude Code / Cursor / Windsurf

Local MCP server via stdio. Runs as a subprocess — faster, works offline for Gate 1.

Step 1: Set up

npx a2a-trustgate quickstart

# Then run the interactive setup:
npx a2a-trustgate setup

Step 2: Configure your editor

npx a2a-trustgate configure mcp

# Or add to .mcp.json manually:
{
  "mcpServers": {
    "a2a-trustgate": {
      "type": "stdio",
      "command": "a2a",
      "args": ["mcp-serve"]
    }
  }
}

Also works with: Cursor (~/.cursor/mcp.json), Windsurf (~/.windsurf/mcp.json), Cline, Aider — same config format.