docs/integrations/claude-desktop

How to connect the Prompt Firewall API Proxy MCP Tool to Claude Desktop

Sanitizes outbound prompts locally before they reach third-party LLMs using deterministic PII filters. This guide provides the exact configuration required to load the prompt_firewall tool inside Claude Desktop.

Step 1: Open the configuration file

Locate and open your Claude Desktop configuration file at the following path:

macOS / Linux~/Library/Application Support/Claude/claude_desktop_config.json

Windows%APPDATA%\Claude\claude_desktop_config.json

Step 2: Add the server config

Copy and paste the following JSON snippet into the file. Save the file and restart Claude Desktop.

claude_desktop_config.json

{
  "mcpServers": {
    "agenticstore": {
      "command": "uvx",
      "args": ["agentic-store-mcp", "--tools", "prompt_firewall"]
    }
  }
}

Step 3: Try it out

Once restarted, ask Claude Desktop something like this to trigger the tool:

"N/A - This tool runs as an HTTP proxy."

Explore more

→ View full prompt_firewall documentation → See all Client integrations