Cron Parser API MCP Server

by br0ski777 Your server? Claim it

not responding

Cron Parser API is listed as active in the registry but did not answer our last check. It exposes 1 tools. Last commit 2 Sep 2026.

Parse, validate and explain cron expressions. Get next run times. x402 micropayment.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 92 checks

Tools

read from the server

9 ms

Response time

average over 24h

Stars

last commit 2 Sep 2026

Cron Parser API does not always answer

Over the last week it answered 30.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add cron-parser --transport http https://cron-parser.api.klymax402.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "cron-parser": {
      "url": "https://cron-parser.api.klymax402.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.cron-parser]
url = "https://cron-parser.api.klymax402.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "cron-parser": {
      "url": "https://cron-parser.api.klymax402.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "cron-parser": {
      "url": "https://cron-parser.api.klymax402.com/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

schedule

schedule_parse_cron

Use this when you need to parse, validate, or explain a cron expression. Returns human-readable description, next N execution times, and field breakdown. Supports standard 5-field cron and extended 6-field (with seconds). Do NOT use for scheduling tasks — use api_test_webhook instead. Do NOT use for JSON validation — use data_validate_json instead.

Endpoints

URL	Transport	State	Latency	Checked
https://cron-parser.api.klymax402.com/mcp	sse	answering	9 ms	3 min ago

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Cron Parser API — questions

Answers built from our own checks of this server.

What can Cron Parser API do?

It exposes 1 tools, read directly from the server on our last check. Among them: schedule_parse_cron. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Cron Parser API working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 9 ms. The bar chart above shows every period we have measured.

The registry lists Cron Parser API as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Cron Parser API?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Cron Parser API need an API key?

No. Cron Parser API completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.

Is Cron Parser API open source?

Yes — it is published under the MIT licence, written in TypeScript, 1 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.