Explain cron

An MCP tool from the Developer Toolbox server, hosted on mcp.hjlabs.in.

Explain a five-field cron expression field by field in plain English, naming months and weekdays. Validates each field against its permitted range.

Name on the gateway: devtools__explain_cron · read-only.

Parameters

Name	Type	Description
`expression` required	`string`	A five-field cron expression, e.g. "0 9 * * 1-5".

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "devtools__explain_cron",
  "arguments": {
    "expression": "…"
  }
}

Or connect the Developer Toolbox server directly, which lists 18 tools including this one:

Run in your terminal

claude mcp add --transport http hj-devtools https://mcp.hjlabs.in/mcp/devtools \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the explain cron tool with expression set to ….