Crontab Parser

live Utility

Parse, validate & describe cron expressions in plain English and compute the next N run times (UTC) — supports ranges, steps, lists, names & @aliases. Keyless, offline.

2 tools
0ms auth
free tier 50 calls/day

Tools

describe_cron

Parse and validate a cron expression (5 fields or an @alias) and describe it in plain English. Returns the parsed fields and whether it is valid.

No parameters required.

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next_runs

Compute the next N run times (UTC ISO-8601) for a cron expression. Optionally start from a given time.

No parameters required.

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Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/crontab/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/crontab/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"describe_cron","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript 
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("describe_cron", {});
ask_pipeworx 
// Or ask in plain English:
const answer = await px.ask("parse, validate & describe cron expressions in plain english and compute the next n run times (utc) — supports ranges, steps, lists, names & @aliases");