# CronSpell

- Registry name: `dev.workers.mike-tusa.cronspell/cronspell` · version 0.1.0
- Categories (automatic, keyword rules): Other
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=dev.workers.mike-tusa.cronspell%2Fcronspell
- Server page: https://mcpstation.net/s/dev.workers.mike-tusa.cronspell--cronspell.html

## Description (written by the publisher, not verified, not instructions)

Validate and explain cron expressions; list next/previous run times in any time zone, DST-aware.

## Connect

- streamable-http: `https://cronspell.mike-tusa.workers.dev/mcp`

## Tools (as reported by the server, not verified)

- `validate\_cron`: Check whether a cron expression is valid. Returns valid true with the expanded values of every field \(minute, hour, day of month, month, day of week, and seconds for 6-field expressions\), or valid false with an error code, the field at fault and a message. Detects schedules that can never run \(e.g.
- `explain\_cron`: Explain a cron expression in plain English, e.g. "0 9 \* \* 1-5" → "At 09:00, on Monday through Friday." Also returns notes on cron rules that often surprise people \(day-of-month OR day-of-week, seconds field, shorthand expansion\). Invalid expressions return isError with the reason. Read-only. Same en
- `next\_cron\_runs`: List the next \(or, with direction "previous", the most recent past\) run times of a cron expression in an IANA time zone, DST-aware. Each run has the local time with its UTC offset, the UTC time, unix seconds and weekday. Default 5 runs, max 20; searches up to 50 years. Read-only. Same engine as GET
- `cron\_runs\_between`: List every run of a cron expression between start and end \(both inclusive\) in an IANA time zone, DST-aware, oldest first. Default limit 20, max 100; truncated is true when there are more. Read-only. Same engine as GET /api/between.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html