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Knuckles-Team

Systems Manager

Sm Cron Operations

sm_cron_operations

List cron jobs and remove selected jobs using returned job references to manage scheduled tasks on managed systems.

Instructions

Operations for cron jobs

Input Schema

NameRequiredDescriptionDefault
userNoUser for cron job
actionYesAction to perform. Must be one of: 'list_cron_jobs', 'remove_cron_job'
job_refNoOpaque job reference returned by list_cron_jobs

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv2.2.5

TDQS

D1.7/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided and the description carries the full burden. It does not disclose that 'remove_cron_job' is a destructive mutation, whether it requires permissions, whether removal is reversible, or what the tool returns. This is a serious gap for an operation-capable tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single short phrase but is under-specified rather than concise. It fails to front-load any actionable information about the tool's behavior or operations.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no annotations, no output schema, and an undisclosed destructive action ('remove_cron_job'), the description is completely inadequate. An agent cannot understand the tool's scope, safety profile, or expected outcomes from this definition alone.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so all three parameters (user, action, job_ref) are documented in the schema. The description adds no additional semantic meaning, which meets the baseline of 3 when the schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose2/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Operations for cron jobs' essentially restates the tool name and title without specifying what operations are performed. It does not mention that the tool can list or remove cron jobs, leaving the agent to infer purpose from the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no guidance on when to use this tool, when not to use it, or which sibling tools (e.g., sm_service_operations, sm_system_operations) are alternatives. The description provides no context for selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.