@onatvaris/rn-network-debugger-mcp

MCP (Model Context Protocol) server for RN Network Debugger. Exposes captured network requests, Redux actions, and console logs from a running DevTools server as tools Claude Code can call directly — for AI-assisted debugging and performance analysis.

Install

npm install -g @onatvaris/rn-network-debugger-mcp

Or use it without installing, via npx (recommended — see configuration below).

Configure Claude Code

Add the MCP server to your project's .claude/settings.json:

{
  "mcpServers": {
    "rn-network-debugger": {
      "command": "npx",
      "args": ["-y", "@onatvaris/rn-network-debugger-mcp"],
      "env": {
        "RN_DEBUGGER_URL": "ws://localhost:8788/ui"
      }
    }
  }
}

If you use a custom port, update RN_DEBUGGER_URL accordingly (e.g. ws://localhost:8789/ui).

Restart Claude Code after saving. The MCP server connects to the DevTools server automatically and reconnects if the server restarts.

Note: The DevTools server must be running (Metro started) for the MCP to have data. The MCP server itself starts on demand when Claude Code invokes a tool.

Available Tools

| Tool | Description | |------|-------------| | server_status | Connection state, number of captured requests, and connected app count | | list_requests | List captured requests with optional filters: method, status code, URL substring, type, duration range, errors only | | get_request | Full details of a single request — headers, body, response, timing | | get_recent_requests | The N most recently captured requests, newest first | | analyze_performance | Latency stats (avg, P50, P95, P99), slowest endpoints, error rates, breakdown by domain and status code | | find_duplicates | Find duplicate/repeated requests — same URL called multiple times, useful for detecting redundant API calls | | search_response_bodies | Search across all captured response bodies for a keyword or field name | | export_har | Export captured requests as a HAR file compatible with Chrome DevTools, Postman, and Charles | | list_redux_actions | List captured Redux actions; also shows top-level state slice names for use with get_redux_action | | get_redux_action | Get details of a Redux action. Defaults to diff mode (only changed state keys). Supports state_paths, include_prev_state, include_next_state, and max_chars | | search_redux_actions | Search Redux action types, payloads, and state for a keyword | | list_console_logs | List captured console logs (log, info, warn, error) with optional level filter, text search, and time range | | search_console_logs | Search across all captured console logs for a keyword, with optional level and case-sensitivity filters |

Full Documentation

See the main README for architecture, DevTools UI usage, setup, troubleshooting, and FAQ.

License

Apache-2.0