Cron expression parser: explains any cron + returns next N fire times. Timezone-aware.
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
One-click editor setup isn’t available for this listing yet — we don’t have a confirmed install command, and we’d rather show nothing than point your editor at the wrong package or host. Follow the project’s own setup instructions, linked above.
Manual Client & Custom JSON ConfigExpand JSON â–¾
No confirmed setup config for this listing yet. We only publish a config block when the install details come from the project itself — its README, its docs, or a verified owner. We haven’t found those for cron-explainer, and we’d rather show nothing than a guess you’d paste into your client. Follow the project’s own setup instructions for the current steps.
Documentation Overview
cron-explainer
A tiny pay-per-call API that parses cron expressions, returns the next N fire times, and produces a short English description. Timezone-aware (IANA).
Live: https://cron-explainer.cron-explainer-prod.workers.dev/ Pricing: 0.01 EUR per successful call, prepaid via Stripe Checkout in packs of 500 / 5,000 / 50,000 calls. Non-2xx responses are refunded. No subscription. Keys never expire.
Quick start
- Get a key at https://cron-explainer.cron-explainer-prod.workers.dev/ (Stripe Checkout, €5 minimum).
- Copy the key — it's shown exactly once.
- Call the API:
Response:
Check remaining balance:
MCP
The server is listed on the official MCP registry as
io.github.IdoAzaCalls/cron-explainer with a Streamable HTTP endpoint at
POST /mcp. It exposes one tool, explain_cron. Pass your x-api-key as
an HTTP header on the MCP transport; billing is identical to the REST path.
Registry entry: https://registry.modelcontextprotocol.io/v0/servers?search=cron-explainer
Endpoints
| Method | Path | Purpose |
|---|---|---|
POST | /v1/explain | Parse + describe + next fire times (billed) |
GET | /v1/balance | Remaining balance for an x-api-key |
POST | /v1/checkout | Create a Stripe Checkout Session |
GET | /v1/schema | JSON Schema for request/response |
POST | /mcp | MCP Streamable HTTP (JSON-RPC 2.0) |
GET | /.well-known/mcp.json | Static tool manifest |
GET | /health | Liveness probe |
GET | /legal/{tos,privacy,disclaimer,notices} | Legal docs |
Limits
- Cron: 5-field POSIX/Vixie syntax (minute, hour, day-of-month, month, day-of-week).
- Timezones: IANA names (e.g.
Europe/Lisbon,America/Los_Angeles). Defaults toUTC. nclamps to[1, 100].- Best-effort accuracy. See
/legal/disclaimerfor warranty terms. - Zero PII: inputs are cron strings and IANA timezones only. Request and response bodies are never logged.
Stack
TypeScript on Cloudflare Workers. Cron parsing via
croner (MIT). English descriptions via
cronstrue (MIT). Full NOTICE
text at /legal/notices.
Contact
azariaido@gmail.com — billing issues, bug reports, custom pricing.
Related MCP Servers
Adoption & maintenance
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Last commit
5mo ago
Most recent push to the default branch.
Directory activity
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