Development

Cron Expression Explainer

Parse a 5-part / 6-part / Quartz cron expression into a plain-language schedule description, show the field-by-field breakdown, and list the next N execution times in any IANA timezone — with an AI-generated natural-language explanation in your language

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/cron-expression-explainer' \
  -H 'Content-Type: application/json' \
  -d '{"expression":"0 9 * * MON-FRI","dialect":"standard","timezone":"America/New_York","count":10,"explainLang":"en"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/cron-expression-explainer

Parameters

Name	Type	Required	Description
expression	text	Yes	—
dialect	select	No	—
timezone	text	No	—
count	number	No	—
explainLang	select	No	—

Response format

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-cron-expression-explainer": {
      "name": "cron-expression-explainer",
      "description": "Parse a 5-part / 6-part / Quartz cron expression into a plain-language schedule description, show the field-by-field breakdown, and list the next N execution times in any IANA timezone — with an AI-generated natural-language explanation in your language",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=cron-expression-explainer",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "cron-expression-explainer",
    "arguments": {
  "expression": "0 9 * * MON-FRI",
  "dialect": "standard",
  "timezone": "America/New_York",
  "count": 10,
  "explainLang": "en"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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