Use Cron Validator with your AI.
Connect your account once and let the AI you already use work with it, without building another integration. Validate cron syntax and calculate exact future execution timestamps.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Complete set · 3 capabilities
The complete Cron Validator capability set.
These are the exact actions your AI can choose when you ask it to work with Cron Validator.
01-03
3 capabilities in this set.
Part of 3 available through Cron Validator.
- 01
Get next runs
Calculates the next N execution timestamps for a cron expression
- 02
Validate cron
Validates a cron expression for syntax and logical possibility
- 03
Inspect expression
Decomposes a cron expression into human-readable parts
Observed, not estimated
561ms average. Fast in production.
Cron Validator is checked daily against the live service.
- Fastest day
- 479ms
- Slowest day
- 638ms
- 14-day trend
- Slowing+19%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Cron Validator, so you can see the experience inside your AI.
It does not authenticate your account with Cron Validator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Cron Validator Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_azeipbwG8DN5DThWMywDx4D6XKPmifpb2gea1Ujk/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — Cron Validator capabilities are ready to use.
{
"mcpServers": {
"cron-expression-validator-next-run-calculator-mcp": {
"url": "https://edge.vinkius.com/vk_preview_azeipbwG8DN5DThWMywDx4D6XKPmifpb2gea1Ujk/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
FAQ
Questions Cron Validator owners ask.
- 01
Does it support 6-field cron expressions?
Yes, the server supports both standard 5-field and extended 6-field cron formats.
- 02
How can I see when my next task will run?
You can use the get_next_runs capability by providing your cron expression and a starting timestamp.
- 03
Can it detect invalid dates in a cron string?
Yes, validate_cron will flag logically impossible expressions like February 30th.
Explore
More in Developer Tools
Cron Expression Validator & Next Run Calculator Alternative AI Connector
Validate cron syntax and calculate exact future execution timestamps.
ViewCron Expression Validator AI Connector
Validate and calculate next execution times for standard and extended cron expressions.
ViewCron Expression Validator AI Connector
Validate and calculate next execution times for standard and extended cron expressions.
ViewCron Expression Parser AI Connector
Validate, interpret, and calculate execution schedules from cron expressions.
View
Suggestions
Cron Expression Engine AI Connector
Parse, validate, convert, and generate cron expressions across multiple standards.
ViewURL Slug Generator AI Connector
Transliterate complex international text into 100% SEO-friendly URL slugs. Prevent AI hallucination of invalid
ViewDeterministic Cron Schedule Engine AI Connector
Equip your AI with precise cron job parsing. Deterministically translate cron to natural language, format sche
ViewCron Expression Calculator AI Connector
Calculate the exact future dates of any Cron expression using deterministic JavaScript. Stop LLMs from failing
View
