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Connect Cron Expression Validator to ChatGPT and Claude

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Stop guessing if your automation schedules are correct.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

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V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through Cron Expression Validator.

  1. 01

    Parse cron components

    This capability breaks a cron expression into its individual parts. It lets your agent inspect every field to see how wildcards, ranges, or steps are being applied.

  2. 02

    Validate cron expression

    This capability checks if a cron string is syntactically correct. It verifies that every value stays within its permitted numerical range.

  3. 03

    Calculate next execution

    This capability finds the exact next time a schedule will run. You provide a starting ISO 8601 timestamp and the cron string to get the result.

Real work

What teams actually run

01

Debugging Automation

Use the parsing capability to see why a complex cron string isn't behaving as expected.

02

Scheduling Verification

Check a new cron string before adding it to a production environment to avoid errors.

03

Predicting Task Runs

Calculate exactly when a recurring job will trigger next to coordinate other system events.

04

Validating User Input

Ensure that scheduling strings provided by users or external APIs meet all requirements.

One connector, every AI

Cron Expression Validator works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put Cron Expression Validator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

571ms average. Fast in production.

Cron Expression Validator is checked daily against the live service.

Daily averagePeak 752ms
Oct 3Today
Fastest day
489ms
Slowest day
752ms
14-day trend
Stable+1%

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 Expression Validator, so you can see the experience inside your AI.

It does not authenticate your account with Cron Expression Validator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Cron Expression Validator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_kFyP2sUylQnQvbDkni5efg1FKkWk8UmbE7pghAHb/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Cron Expression Validator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "cron-expression-validator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_kFyP2sUylQnQvbDkni5efg1FKkWk8UmbE7pghAHb/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

Guided setup for Claude? Set up Cron Expression Validator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Cron Expression Validator owners hand off.

This MCP is built for engineers and automation specialists who manage scheduled tasks.

  • 01

    DevOps Engineers

    They hand off complex scheduling strings to the agent to verify deployment or cleanup tasks.

  • 02

    Backend Developers

    They use it to debug cron patterns used in application logic or database maintenance.

  • 03

    SREs

    They rely on it to calculate exact execution windows for system monitoring alerts.

FAQ

Questions Cron Expression Validator owners ask.

  • 01

    Does this MCP support seconds in cron expressions?

    Yes, it supports both the standard 5-field format and the extended 6-field format that includes seconds.

  • 02

    Can I use this with Claude or Cursor?

    Yes, you can use this MCP with any MCP-compatible client including Claude, Cursor, and Windsurf.

  • 03

    How does it handle invalid cron strings?

    The validation capability identifies syntax errors and specifically flags values that fall outside of permitted numerical ranges.

  • 04

    Can I calculate a schedule based on a specific time?

    Yes, the calculate_next_execution capability computes the next occurrence based on any provided ISO 8601 timestamp.

  • 05

    Do I need to host the MCP myself?

    No, Vinkius hosts and manages the MCP for you, so it is ready to use immediately after connection.

  • 06

    Does this support the 6-field cron format?

    Yes, by setting the isExtended parameter to true in capabilities like validate_cron_expression, you can validate and calculate schedules that include seconds.

  • 07

    How can I see the individual parts of my cron expression?

    You can use the parse_cron_components capability to deconstruct your expression into its constituent fields, such as minutes, hours, and days.

  • 08

    What happens if my cron expression is invalid?

    The validate_cron_expression capability will return isValid: false along with a detailed list of validationErrors explaining exactly which field failed and why.

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