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list_collector_groups

Read-onlyIdempotent

List Aria Operations collector groups and member statuses to pinpoint DOWN collectors that cause stale or missing resource metrics.

Instructions

[READ] List Aria Operations collector groups and their member collector status.

Collectors are remote agents that gather metrics from vSphere and other adapters. Check this when resources appear missing from Aria Operations or metrics are stale. Groups list member collector IDs; details (name, state UP/DOWN, local) are enriched via one extra collectors call. A DOWN collector means list_resources and the metric tools see stale or missing data for everything behind it.

Returns a paginated envelope: items, returned, limit, total (null when the API reports no size), truncated, hint. Check truncated before calling this the complete set.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
targetNoAria target name from config; default when omitted.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv1.10.0
    • addedInput schema / additionalProperties
      Added value: +false
    • addedInput schema / properties / target / description
      Added value: +"Aria target name from config; default when omitted."
  2. Changed1 schema field changedv1.8.9
    • changedOutput schema / (root)
      Previous value: -{
      -  "properties": {
      -    "result": {
      -      "items": {
      -        "additionalProperties": true,
      -        "type": "object"
      -      },
      -      "title": "Result",
      -      "type": "array"
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "title": "list_collector_groupsOutput",
      -  "type": "object"
      -}New value: +null
  3. Addedv1.5.29
  4. Removedv1.5.28
  5. First observedv1.3.2

TDQS

A4.5/5.0
Behavior5/5

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

Annotations already declare the tool read-only, idempotent, and non-destructive. The description adds meaningful behavioral context beyond annotations: it discloses the pagination envelope fields, notes that total is null when the API reports no size, warns to check truncated, and explains the enrichment via one extra collectors call. No contradictions with annotations.

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?

The description is well-structured and front-loaded: purpose, context, usage trigger, behavioral caveats, and return format. Every sentence adds value, and the pagination warning is placed at the end without clutter.

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?

The tool is simple (one optional parameter, no required inputs, no output schema), but the description still covers the key operational concerns: when to use it, what groups contain, what a DOWN collector implies, and what the paginated response looks like. Nothing essential is missing.

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?

The schema already fully covers the single parameter with a clear description: 'Aria target name from config; default when omitted.' Since schema description coverage is 100%, the description doesn't need to add parameter details. It adds no new parameter semantics but is not deficient.

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?

The description opens with a specific verb and resource: 'List Aria Operations collector groups and their member collector status.' It also explains what collectors are and links the tool to symptoms (missing/stale resources), making its purpose distinct from siblings like list_resources and get_resource_metrics.

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?

The description explicitly says when to use this tool: 'Check this when resources appear missing from Aria Operations or metrics are stale.' It also explains how a DOWN collector affects list_resources and metric tools, which is a clear usage signal. It doesn't name alternatives to rule out, but the context is sufficiently clear.

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