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MCP Crontab Explorer

@jasona7

Repository

Basic information

Category

Other

Transports

stdio

Author

jasona7

About MCP Crontab Explorer

A MCP Server exposing tools for fetching entries and viewing logs

MCP Crontab Explorer config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "crontab": {
      "command": "uvx",
      "args": [
        "mcp-crontab-server"
      ]
    }
  }
}

MCP Crontab Explorer tools

8

List all crontab entries for the current user

Search entries by keyword (case-insensitive)

Recent cron execution logs (journalctl / syslog)

Explain a cron expression in plain English

Calculate the next N execution times

Check if an expression is syntactically valid

Add a new entry to the user's crontab

Remove entries matching a pattern

Overview

What is MCP Crontab Explorer?

MCP Crontab Explorer is an MCP server for exploring, explaining, and managing crontab entries. It works with Claude Desktop, Claude Code, and any MCP client, and can translate cron expressions into plain English and calculate upcoming execution times.

How to use MCP Crontab Explorer?

Install via uvx mcp-crontab-server or from source with pip install -e .. Add it to your Claude Desktop configuration or use claude mcp add crontab for Claude Code. Run as a stdio server by default, or use --transport sse for SSE.

Key features of MCP Crontab Explorer

  • List all crontab entries for the current user
  • Search entries by keyword (case‑insensitive)
  • Explain any cron expression in plain English
  • Calculate the next N execution times
  • Validate cron expression syntax
  • Add or remove crontab entries

Use cases of MCP Crontab Explorer

  • Understand what a complex cron pattern like */15 9-17 * * 1-5 actually means
  • Find out when a scheduled job will next run (e.g., next 3 runs of 0 2 * * 0)
  • Check if a cron expression is syntactically valid before adding it
  • View and manage your personal crontab entries through an MCP client
  • Search your crontab for entries containing a specific keyword

Frequently asked questions

1

What are the system requirements?

Python 3.10+, Linux/macOS (requires the `crontab` command), and the packages `fastmcp>=2.0.0` and `croniter>=1.0.0`.

2

What transports are supported?

The server runs on stdio by default. Use `mcp-crontab-server --transport sse` to switch to SSE transport.

3

How do I explain a cron expression?

Use the `explain_cron_expression` tool and pass the expression as a string; it returns a plain‑English description.

4

How do I calculate the next run times for an entry?

Use the `next_runs` tool with the expression and an optional count (default 5) to get the next scheduled execution times.

5

Can I add or remove entries from my crontab?

Yes. Use `add_cron_entry` to insert a new entry, and `remove_cron_entry` to delete entries matching a given pattern.

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