What is the key difference between MCP Jp Calendar and Claude Task Master?

MCP Jp Calendar belongs to the Developer Tools category with local stdio execution, while Claude Task Master belongs to the Developer Tools category with local stdio execution.

How do I install MCP Jp Calendar or Claude Task Master in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are MCP Jp Calendar and Claude Task Master free or paid?

MCP Jp Calendar operates under a Free / Open Source model (No auth required). Claude Task Master operates under a BYOK (Pay Provider Direct) model (API Key required).

Which MCP server has more tools and community activity?

MCP Jp Calendar lists 7 tools with 0 views and 0 GitHub stars. Claude Task Master lists 6 tools with 8 views and 28,061 GitHub stars.

Can I use both MCP Jp Calendar and Claude Task Master together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

MCP Jp Calendar vs Claude Task Master

In-depth architectural comparison of the MCP Jp Calendar and Claude Task Master MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

MCP Jp Calendar

Developer Tools · Local stdio

Quality: 52/100 (Good) | Auth: No auth required

Claude Task Master

Developer Tools · Local stdio

Quality: 61/100 (Good) | Auth: API Key required

Verdict Summary: Choose MCP Jp Calendar if you need specialized Developer Tools tools running via a local process. Choose Claude Task Master if your workspace requires Developer Tools integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose MCP Jp Calendar when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: is_business_day, add_business_days, count_business_days.

Explore MCP Jp Calendar Details

Choose Claude Task Master when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
You have access to required keys: ANTHROPIC_API_KEY, OPENAI_API_KEY, GOOGLE_API_KEY, PERPLEXITY_API_KEY, XAI_API_KEY, OPENROUTER_API_KEY, MISTRAL_API_KEY, TASK_MASTER_TOOLS.
Primary tools included: PRD parsing, Task expansion, Task dependencies.

Feature & Specification Comparison

Specification	M MCP Jp Calendar Developer Tools	Claude Task Master eyaltoledano Developer Tools
Summary	MCP server for Japanese business days, holidays, and fiscal-period calculations.	AI-powered task management system for AI-driven development. Features PRD parsing, task expansion, multi-provider support (Claude, OpenAI, Gemini, Perplexity, xAI), and selective tool loading for optimized context usage.
Category & Scope	Developer Tools

Tools & Capabilities Breakdown

MCP Jp Calendar Tools (7)

is_business_day

Check whether a given date is a business day

add_business_days

Get the date N business days after/before a given date

count_business_days

Count business days between two dates (inclusive)

next_gotobi

Get the next "gotobi" settlement day (5th, 10th, 15th, 20th, 25th, or last day of month), plus the actual business day if that date is a holiday

month_end_info

Get the last day of a given month, and the effective closing date if that day is a holiday

fiscal_period

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

MCP Jp Calendar Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "mcp-jp-calendar": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-jp-calendar"
      ]
    }
  }
}

Claude Task Master Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "eyaltoledano-claude-task-master": {
      "command": "npx",
      "args": [
        "-y",
        "task-master-ai"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "YOUR_ANTHROPIC_API_KEY_HERE",
        "OPENAI_API_KEY": "YOUR_OPENAI_API_KEY_HERE",
        "GOOGLE_API_KEY": "YOUR_GOOGLE_API_KEY_HERE",
        "PERPLEXITY_API_KEY": "YOUR_PERPLEXITY_API_KEY_HERE",
        "XAI_API_KEY": "YOUR_XAI_API_KEY_HERE",
        "OPENROUTER_API_KEY": "YOUR_OPENROUTER_API_KEY_HERE",
        "MISTRAL_API_KEY": "YOUR_MISTRAL_API_KEY_HERE",
        "TASK_MASTER_TOOLS": "YOUR_TASK_MASTER_TOOLS_HERE"
      }
    }
  }
}

Frequently Asked Questions

MCP Jp Calendar is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Claude Task Master belongs to Developer Tools using local stdio subprocess. Select MCP Jp Calendar when you need capabilities focused on developer tools and Claude Task Master when you require tools for developer tools.

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