Cron Explainer is answering right now. Last checked 15 min ago. It exposes 1 tools. Last commit 23 Apr 2026.
Cron expression parser: explains any cron + returns next N fire times. Timezone-aware.
Today is the operative word: we check Cron Explainer every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.
claude mcp add cron-explainer --transport http https://cron-explainer.cron-explainer-prod.workers.dev/mcp
https://cron-explainer.cron-explainer-prod.workers.dev/mcp
[mcp_servers.cron-explainer]
url = "https://cron-explainer.cron-explainer-prod.workers.dev/mcp"
{
"mcpServers": {
"cron-explainer": {
"url": "https://cron-explainer.cron-explainer-prod.workers.dev/mcp"
}
}
}
{
"servers": {
"cron-explainer": {
"type": "http",
"url": "https://cron-explainer.cron-explainer-prod.workers.dev/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
explain_cron
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://cron-explainer.cron-explainer-prod.workers.dev/mcp | streamable-http | answering | 95 ms | 15 min ago |
Validate and explain cron expressions; list next/previous run times in any time zone, DST-aware.
Parse, explain and validate 5-field cron expressions and list upcoming runs in a time zone.
Cron expression helper: explain a schedule in plain words and list its next run times, with
Parse, describe, and compute next runs for cron expressions locally. No network and no key.
Next cron run times in any IANA timezone, with DST gap and fold warnings.
Cron runs across timezones
Build, explain, and validate cron expressions
MCP server for cron expression parsing, validation, and scheduling.
Answers built from our own checks of this server.