Cron Parser API
Let your coding agent parse, validate, and explain cron strings and preview upcoming run times without leaving the chat.
Overview
Cron Parser is a MCP server for the Build phase that parses, validates, and explains cron expressions and returns next run times over a remote SSE endpoint.
What is this MCP server?
- Parse standard five-field cron expressions via remote MCP (SSE)
- Validate syntax and return human-readable field explanations
- Compute next run times from a given expression and reference time
- Hosted remote at cron-parser.api.klymax402.com (server schema v2025-12-11)
- x402 micropayment on the Klymax402 remote endpoint
- Server version 1.1.0 per MCP server.schema.json
- Single remote SSE endpoint on cron-parser.api.klymax402.com
- x402 micropayment model on hosted API
Community signal: 1 GitHub stars.
What problem does it solve?
Agents often propose cron strings that look plausible but fail at runtime or fire at the wrong cadence, and fixing that means context-switching to docs or shell tests.
Who is it for?
Solo builders wiring scheduled jobs, webhooks, or background workers who want the agent to sanity-check cron before merge.
Skip if: Teams that need full job orchestration, distributed locks, or on-prem cron management without a paid remote MCP call.
What do I get? / Deliverables
You get validated cron semantics, readable explanations, and upcoming run timestamps inside the agent thread before committing schedules to code or infra.
- Validation result for a cron expression
- Field-by-field explanation of the schedule
- List of upcoming run datetimes
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Journey fit
Cron expressions are wired during product and automation integration work before jobs go to production schedulers. Fits the integrations shelf where agents configure timers, GitHub Actions schedules, and worker crons.
How it compares
Focused cron parse/validate MCP tool, not a full scheduler or workflow engine like Temporal.
Common Questions / FAQ
Who is Cron Parser for?
Indie developers and agent users who schedule recurring tasks and want cron expressions verified and explained inside Claude Code, Cursor, or similar MCP clients.
When should I use Cron Parser?
Use it when reviewing agent-generated crontab lines, debugging why a job did not fire, or confirming next run times before deploying to production.
How do I add Cron Parser to my agent?
Register the remote MCP server URL https://cron-parser.api.klymax402.com/mcp (SSE) in your client’s MCP config, ensure x402 micropayment is set up for Klymax402, then invoke the server tools from the agent.