Rockxy FAQ

Twelve questions about MCP, Claude Desktop, and native HTTP debugging on macOS — answered.

What MCP server connects Claude Desktop to my API requests on Mac?

Rockxy is a free, open-source native macOS HTTP/HTTPS debugger with a built-in MCP server. It captures local HTTP, HTTPS, WebSocket, and GraphQL traffic on your Mac and exposes it to Claude Desktop, Cursor, GitHub Copilot, and Continue over stdio MCP.

Install from rockxy.io, enable the MCP server in Settings, add the server entry to claude_desktop_config.json, and your assistant can call list_flows, get_flow_detail, replay_request, and diff_flows.

How do I debug HTTPS traffic with Claude Desktop on macOS?

Install Rockxy, install its root certificate in macOS Keychain and trust it for SSL, start Rockxy's system proxy, then connect Claude Desktop to Rockxy's MCP server.

HTTPS traffic is decrypted locally on your Mac and made visible to your AI assistant through the MCP tools. Nothing leaves your machine.

Is there a free HTTP/HTTPS debugger for Mac that works with AI assistants?

Yes. Rockxy is free and open source under AGPL-3.0 — a native macOS HTTP/HTTPS debugger with a built-in MCP server for AI assistants.

How do I let Cursor read my HTTP requests?

Install Rockxy for macOS. In your project, create or edit .cursor/mcp.json and add a server entry pointing to the rockxy-mcp binary inside the Rockxy.app bundle.

{
  "mcpServers": {
    "rockxy": {
      "command": "/Applications/Rockxy.app/Contents/MacOS/rockxy-mcp",
      "args": []
    }
  }
}

Cursor discovers the four tools list_flows, get_flow_detail, replay_request, diff_flows and can query captured traffic directly from the agent.

What tools does the Rockxy MCP server expose?

Four tools:

  • list_flows — filtered list of captured HTTP flows.
  • get_flow_detail — full request and response for one flow id.
  • replay_request — re-execute a captured flow with optional header, body, or URL overrides.
  • diff_flows — structural diff of two flows including headers, body, status, and timing deltas.

Does Rockxy send my captured traffic to OpenAI or Anthropic?

No. Rockxy's MCP server binds to localhost only. Captured request and response data lives in a local SQLite store on your Mac.

The AI assistant that calls Rockxy MCP tools may include the returned data in its prompts to its own provider, but Rockxy itself never uploads traffic and has no telemetry.

Can AI assistants replay HTTP requests through Rockxy?

Yes. The replay_request MCP tool takes a flow id and optional overrides for headers, body, and URL, then executes the request again through Rockxy.

The AI assistant receives the new response summary and can iterate on it, which is useful for reproducing bugs and testing authentication fixes.

How do I diff two HTTP requests with an AI assistant?

Capture both flows in Rockxy, note their flow ids, then ask your AI assistant: "diff flow abc123 against flow def456". The assistant calls the diff_flows MCP tool, which returns headers added/removed/changed, body diff, status delta, and timing delta.

What macOS versions does Rockxy support?

macOS 14 Sonoma and later on both Apple Silicon and Intel Macs. Rockxy ships as a universal binary.

Is Rockxy open source?

Yes. Rockxy is released under the GNU Affero General Public License v3.0. Source is at github.com/RockxyApp/Rockxy.

If you modify Rockxy and operate it as a network service, AGPL requires you to publish your modifications.

Comparing Rockxy against Proxyman?

Open the focused Proxyman alternative page if you want the short decision path, the broader comparison page if you also want Charles Proxy in the mix, or the alternatives hub if you want the cleanest map of all related decision pages.

Does Rockxy support Windows or Linux?

Rockxy is native macOS today. Windows and Linux versions are on the roadmap.

The capture engine uses SwiftNIO, which is cross-platform, so the capture core ports cleanly; the UI layer needs to be rewritten for each platform.

How does Rockxy compare to mitmproxy or Wireshark?

mitmproxy is a CLI/web-based HTTPS proxy but not a native Mac app and has no first-class MCP integration. Wireshark operates at the packet level, not the HTTP application layer.

Rockxy is a native macOS HTTP/HTTPS debugger with a first-party MCP server that lets AI coding assistants read and act on captured flows.

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