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Parallels RAS MCP Server

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HALB Status

ras_infra_get_halb_status
Read-onlyIdempotent

Monitor load balancer availability and diagnose gateway connectivity by retrieving HALB device health, IP addresses, and operational state in the farm.

Instructions

Status of HALB (High Availability Load Balancer) devices in the farm — device health, IP addresses, operational state. Use this to monitor load balancer availability or diagnose gateway connectivity.

Input Schema

NameRequiredDescriptionDefault
limitNoMax rows after filtering. Default 50, max 200. Prefer narrowing with `filter` over raising the limit.
fieldsNoTop-level keys to keep on each row. Unknown keys are dropped. Use this to shrink large responses to only the columns you need.
filterNoEquality filter on top-level fields (AND across keys). String values match case-insensitively.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changedv1.3.0
    • addedInput schema / additionalProperties
      Added value: +false
    • addedInput schema / properties / fields
      Added value: +{
      +  "description": "Top-level keys to keep on each row. Unknown keys are dropped. Use this to shrink large responses to only the columns you need.",
      +  "items": {
      +    "type": "string"
      +  },
      +  "type": "array"
      +}
    • addedInput schema / properties / filter
      Added value: +{
      +  "additionalProperties": {
      +    "type": [
      +      "string",
      +      "number",
      +      "boolean"
      +    ]
      +  },
      +  "description": "Equality filter on top-level fields (AND across keys). String values match case-insensitively.",
      +  "type": "object"
      +}
    • addedInput schema / properties / limit
      Added value: +{
      +  "description": "Max rows after filtering. Default 50, max 200. Prefer narrowing with `filter` over raising the limit.",
      +  "maximum": 200,
      +  "minimum": 1,
      +  "type": "integer"
      +}
  2. First observedv1.0.0

TDQS

A3.8/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so safety behavior is covered. The description adds the conceptual content of a response (health, IPs, state), which is useful, but says nothing about pagination, default/max limits, or result volume beyond what the schema states.

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

Conciseness5/5

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

Two tightly packed sentences with the resource and returned data front-loaded and the usage cue second; no filler.

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

Completeness4/5

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 carries return-value disclosure and does so reasonably by naming the field categories returned. It could say more about the row/list shape or filtering behavior, but it is adequate for a read-only monitoring tool.

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 coverage is 100% — limit, fields, and filter all carry detailed descriptions including defaults and caps. The description adds no additional parameter meaning, so the baseline 3 applies.

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

Purpose4/5

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

States a specific verb+resource (get status of HALB devices) and even expands the acronym and enumerates returned fields (device health, IP addresses, operational state). It is distinguishable from ras_infra_get_gateway_status and ras_site_get_load_balancing, though it never explicitly contrasts with those near-neighbors.

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

Usage Guidelines4/5

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

"Use this to monitor load balancer availability or diagnose gateway connectivity" gives clear usage context and a diagnostic scenario. It stops short of naming when to prefer an alternative tool or any exclusions.

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