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crontab_explain

Explain a cron expression in human-readable terms.

SERVERUnClick SOURCE@unclick/mcp-server
Low RISK CLASS
Category Read
Parameters 11 required
Recommended Allowedsee the rule below
Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/crontab-explain.md

What crontab_explain does on UnClick

AI agents call crontab_explain to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

ParameterTypeRequiredDescription
expression string Yes Cron expression (e.g. '0 9 * * 1-5') or shortcut (@daily, @hourly).

Parameters from the server's own tool schema.

Why crontab_explain is rated Low

The tool takes a cron expression as input and returns a human-readable explanation of what that expression means. This is a read-only operation with no side effects—it retrieves or translates information without altering any state or triggering any external actions. No data is created, modified, deleted, or executed as a result of using this tool.

From the tool's definition Tool is named 'crontab_explain' and described as 'Explain a cron expression in human-readable terms.' This is a pure query/interpretation function that parses and returns information about cron syntax without executing, modifying, or deleting anything.

Risk signalsAccepts freeform code/query input (expression)

Questions about crontab_explain

What does the crontab_explain tool do? +

Explain a cron expression in human-readable terms. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.

What parameters does crontab_explain accept? +

crontab_explain accepts 1 parameter: expression. Required: expression. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on crontab_explain? +

Register the UnClick MCP server in PolicyLayer and add a rule for crontab_explain: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches UnClick. Nothing to install.

What risk level is crontab_explain? +

crontab_explain is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit crontab_explain? +

Yes. Add a rate_limit block to the crontab_explain rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block crontab_explain completely? +

Set action: deny in the PolicyLayer policy for crontab_explain. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides crontab_explain? +

crontab_explain is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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