Summary
If you're working with scheduled tasks and need to decode cron syntax on the fly, this server handles the parsing and validation for you. It takes cron expressions and explains what they mean in plain terms, validates whether they're properly formed, and calculates upcoming execution times. The server runs as a hosted service over SSE and uses x402 micropayments, so you'll need compatible tooling to connect. Useful when you're debugging automation scripts, building scheduling interfaces, or just trying to figure out what `*/15 3-5 * * 1-5` actually does without opening another tab.
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Public tool metadata for what this MCP can expose to an agent.
1 tools
schedule_parse_cronUse 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 6-3 params
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-
Parameters* required
countnumberNumber of next run times to return (default: 5, max: 20)
expressionstringCron expression (e.g. '0 9 * * 1-5' or '*/5 * * * *')
timezonestringIANA timezone (default: UTC, e.g. America/New_York)
Cron Parser API
Parse, validate, and explain cron expressions. Get next N run times in any timezone. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"cron-parser": {
"url": "https://cron-parser.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://cron-parser.api.klymax402.com/api/parse" \
-H "Content-Type: application/json" \
-d '{"expression":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
schedule_parse_cron | POST | /api/parse | $0.003 | Parse a cron expression and get next run times |
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.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
expression | string | yes | Cron expression (e.g. '0 9 * * 1-5' or '*/5 * * * *') |
timezone | string | no | IANA timezone (default: UTC, e.g. America/New_York) |
count | number | no | Number of next run times to return (default: 5, max: 20) |
Example agent prompts
- "Parse, validate, or explain a cron expression"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
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