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mcp-synology

mcp-synology

get_system_info

Read-only

Retrieves Synology NAS system details such as model, serial number, DSM version, RAM, uptime, local time, and temperature; administrators also get CPU, NTP, firmware, and device status.

Instructions

Get everything DSM reports about the NAS. Every account gets the model, serial number, DSM version, RAM, uptime, the NAS's local time and its code page, and the temperature where the NAS has a sensor. A DSM administrator account also gets the CPU, time zone with the current UTC offset, NTP server, firmware date, DSM's update-ready and crash flags, eSATA and attached devices, the network-card flag on DSM 7.2.2 and later, and redundant power on models that report it; any other account gets a line saying so. Use this to identify the NAS, check its basic health or tell the time on it. For live CPU, memory, disk and network load, use get_resource_usage.

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.9.1
    • changedOutput schema / (root)
      Previous value: -{
      -  "properties": {
      -    "result": {
      -      "title": "Result",
      -      "type": "string"
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "title": "tool_get_system_infoOutput",
      -  "type": "object"
      -}New value: +null
  2. Addedv0.7.1

TDQS

A4.8/5.0
Behavior5/5

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

Goes well past the readOnlyHint/destructiveHint annotations by disclosing that the response is account-dependent: admins get CPU, time zone, NTP, firmware, update/crash flags, eSATA, redundancy, while 'any other account gets a line saying so'. It also conditions fields on hardware ('the temperature where the NAS has a sensor') and DSM version ('on DSM 7.2.2 and later'), which is exactly the behavioral context an agent cannot infer.

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

Conciseness4/5

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

Front-loaded with a one-line summary, then the conditional detail, then the routing pointer to the sibling — a sound structure. The middle sentence is a long comma-separated field inventory, which is dense but earns its place given there is no output schema; some of that enumeration could be tightened.

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

Completeness5/5

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

No output schema exists, so the description must carry return-value information — and it does, covering both the always-present fields and the admin-only conditional fields, including the fallback line for non-admins. Combined with the sibling pointer and account-dependence caveat, nothing an agent needs to call this correctly is missing.

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

Parameters4/5

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

The tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for a no-arg tool applies. The description correctly spends no words on inputs and puts the budget into output shape instead.

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

Purpose5/5

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

Specific verb+resource ('Get everything DSM reports about the NAS') with an explicit enumeration of the resource's contents. It also names the sibling it must not be confused with (get_resource_usage), so an agent can separate the two without opening either schema.

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

Usage Guidelines5/5

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

Explicit when-to-use ('identify the NAS, check its basic health or tell the time on it') plus a named alternative with the selecting condition ('For live CPU, memory, disk and network load, use get_resource_usage'). Both sides of the routing decision are stated.

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