Summary
Converts natural language descriptions into proper cron expressions, so you can say "every Monday at 9am" instead of remembering the five-field syntax. Runs as a remote service over SSE at crontab-generator.api.klymax402.com and charges x402 micropayments per conversion. The GitHub repo is pretty bare, just config files and a src directory, so documentation on available methods or how the natural language parsing works isn't visible. You'd reach for this when you're scheduling tasks programmatically and want to let users specify timing in plain English rather than forcing them to learn cron notation. Useful for automation tools, deployment pipelines, or any app that needs to turn human-readable schedules into machine-executable cron jobs.
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Crontab Generator API
Convert natural language like 'every Monday at 9am' into valid cron expressions with explanation and next run times. 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": {
"crontab-generator": {
"url": "https://crontab-generator.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://crontab-generator.api.klymax402.com/api/generate" \
-H "Content-Type: application/json" \
-d '{"description":"..."}'
# -> 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 |
|---|---|---|---|---|
utility_generate_crontab | POST | /api/generate | $0.001 | Generate a cron expression from natural language |
utility_generate_crontab
Use this when you need to generate a cron expression from a natural language description like "every Monday at 9am" or "every 5 minutes". Returns the cron expression with validation.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
description | string | yes | Natural language description of the schedule (e.g. 'every Monday at 9am', 'twice a day', 'every 5 minutes') |
Example response:
{"expression":"0 9 * * 1","description":"Every Monday at 9:00 AM","nextRuns":["2026-04-14T09:00:00Z","2026-04-21T09:00:00Z"],"confidence":"high"}
When to use: creating new scheduled tasks from user instructions, building crontab configs from plain English, or translating business requirements into cron syntax. Use this BEFORE writing cron entries manually.
Not for: parsing existing cron expressions (use schedule_parse_cron), JSON validation (use data_validate_json), text analysis (use text_count_words).
Example agent prompts
- "Generate a cron expression from a natural language description like "every Monday at 9am" or "every 5 minutes""
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)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
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
Featured
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Give your AI agent a complete email layer—sending, inbound inboxes, and sandbox testing.
Get 4K emails/month free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
