Cron Explainer

io.github.IdoAzaCallsv0.1.2更新于 Sep 29, 2026

Cron expression parser: explains any cron + returns next N fire times. Timezone-aware.

已验证Streamable HTTP可网页运行Other

安装

在 SourceWeft 中

  1. 打开 控制台中的 Cron Explainer，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "cron-explainer": {
      "type": "http",
      "url": "https://cron-explainer.cron-explainer-prod.workers.dev/mcp"
    }
  }
}

README

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

  1. Get a key at https://cron-explainer.cron-explainer-prod.workers.dev/ (Stripe Checkout, €5 minimum).
  2. Copy the key — it's shown exactly once.
  3. Call the API:
bash
curl -X POST https://cron-explainer.cron-explainer-prod.workers.dev/v1/explain \  -H "content-type: application/json" \  -H "x-api-key: $YOUR_KEY" \  -d '{"cron":"0 9 * * 1-5","tz":"Europe/Lisbon","n":3}'

Response:

json
{  "input": {"cron":"0 9 * * 1-5","tz":"Europe/Lisbon","n":3},  "valid": true,  "description": "At 09:00, Monday through Friday",  "next": ["2026-04-24T08:00:00.000Z","2026-04-27T08:00:00.000Z","2026-04-28T08:00:00.000Z"],  "flags": {"dst_transition_ahead": false, "ambiguous": false, "notes": []},  "errors": []}

Check remaining balance:

bash
curl -H "x-api-key: $YOUR_KEY" \  https://cron-explainer.cron-explainer-prod.workers.dev/v1/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

MethodPathPurpose
POST/v1/explainParse + describe + next fire times (billed)
GET/v1/balanceRemaining balance for an x-api-key
POST/v1/checkoutCreate a Stripe Checkout Session
GET/v1/schemaJSON Schema for request/response
POST/mcpMCP Streamable HTTP (JSON-RPC 2.0)
GET/.well-known/mcp.jsonStatic tool manifest
GET/healthLiveness 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 to UTC.
  • n clamps to [1, 100].
  • Best-effort accuracy. See /legal/disclaimer for 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

[email protected] — billing issues, bug reports, custom pricing.

来源：README.md，提交 cf5863a

工具

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版本历史

1
  1. v0.1.2最新Sep 16, 2026