Har Viewer

Network REST API MCP

Parse HAR 1.x JSON and return each entry’s method, URL, status, size, time, and MIME type. Request bodies, cookies, and headers are omitted. Convert a HAR to curl with har_to_curl.

This page documents the MCP tool findutils:har_viewer. See the REST reference →

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:har_viewer · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "har_viewer",
      "arguments": {
        "har": "{\"log\":{\"version\":\"1.2\",\"entries\":[{\"time\":12,\"request\":{\"method\":\"GET\",\"url\":\"https://example.com/\"},\"response\":{\"status\":200,\"statusText\":\"OK\",\"content\":{\"size\":10,\"mimeType\":\"text/plain\"}}}]}}"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
har	string	yes	HAR 1.x JSON text (DevTools export with log.entries).

Example arguments (verified)

{
  "har": {
    "log": {
      "version": "1.2",
      "entries": [
        {
          "time": 12,
          "request": {
            "method": "GET",
            "url": "https://example.com/"
          },
          "response": {
            "status": 200,
            "statusText": "OK",
            "content": {
              "size": 10,
              "mimeType": "text/plain"
            }
          }
        }
      ]
    }
  }
}

Arguments that carry JSON as a string are shown decoded for readability. The Copy button copies the exact wire arguments.

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/har-viewer/execute — no key, 60 requests/min.

Open the REST reference for Har Viewer →

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