HAR MCP Server

Name: HAR MCP Server
Author: tjamet

@tjamet

リポジトリ

HAR MCP Server について

A MCP server for parsing and analyzing HAR (HTTP Archive) files

#ai #mcp-server #http-archive

基本情報

カテゴリ

その他

ライセンス

MIT license

ランタイム

トランスポート

stdio

公開者

tjamet

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "github": {
      "command": "go",
      "args": [
        "run",
        "github.com/tjamet/har-mcp/cmd/har-mcp@main"
      ]
    }
  }
}

ツール

ツールは検出されませんでした

ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is HAR MCP Server?

A Model Context Protocol (MCP) server for parsing and analyzing HAR (HTTP Archive) files. It allows AI assistants to inspect network traffic captured in HAR format, with built-in support for redacting sensitive authentication headers.

How to use HAR MCP Server?

Install via Docker, go run, or build from source. Configure the server in your MCP configuration as a stdio-based tool. Use the provided tools: load_har to load a file, list_urls_methods to see all URLs and methods, get_request_ids to find specific request IDs, and get_request_details to retrieve full request details with automatic header redaction.

Key features of HAR MCP Server

Load HAR files from local filesystem or HTTP URLs
List all URLs and HTTP methods in a HAR file
Query request IDs by URL and method combination
Retrieve full request details with automatic redaction of auth headers
Handles float/decimal time fields, base64 content, and extra fields
Supports standard HAR format from browser developer tools

Use cases of HAR MCP Server

Inspecting network traffic captured by browser developer tools
Debugging API interactions through AI-assisted analysis
Auditing authentication and authorization headers in HTTP logs
Automating HAR file processing in CI/CD pipelines

FAQ from HAR MCP Server

How does HAR MCP Server handle sensitive data?

Authentication headers such as Authorization, X-API-Key, X-Auth-Token, Cookie, Set-Cookie, and Proxy-Authorization are automatically redacted when retrieving request details.

What are the dependencies and runtime requirements?

The server is written in Go. It can run via Docker, go run, or a pre-built binary. It uses martian/har for parsing, mcp-go for MCP implementation, and testify for testing.

How is data loaded into the server?

HAR files are loaded on demand using the load_har tool, either from a local file path or an HTTP/HTTPS URL. Data is not stored permanently between sessions.

What transport does the server use?

The HAR MCP Server runs as a stdio-based MCP server, communicating via JSON‑RPC over standard input/output. It does not support network transports.

How does the server handle non-standard HAR files?

It automatically rounds float/decimal time fields to integers, accepts both plain text and base64‑encoded response content, and tolerates additional fields not present in the basic HAR specification.