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Python
Remote

list_supervisor_storage_policies

Read-onlyIdempotent

List vCenter storage policies assignable to Supervisor Namespaces. Use the returned policy ID when creating or updating a namespace.

Instructions

[READ] List vCenter storage policies assignable to Supervisor Namespaces.

Returns the list envelope: items of {policy (ID), name, description} plus returned/total/truncated — one call returns them all, so truncated is always false. Call this before create_namespace or update_namespace and pass the 'policy' ID as their storage_policy. For PVC-level usage use list_namespace_storage_usage instead.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
targetNovCenter in config.yaml; omit for the default.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv1.8.14
    • addedInput schema / additionalProperties
      Added value: +false
    • addedInput schema / properties / target / description
      Added value: +"vCenter in config.yaml; omit for the default."
  2. Changed1 schema field changedv1.8.8
    • changedOutput schema / (root)
      Previous value: -{
-  "properties": {
-    "result": {
-      "items": {
-        "additionalProperties": true,
-        "type": "object"
-      },
-      "title": "Result",
-      "type": "array"
-    }
-  },
-  "required": [
-    "result"
-  ],
-  "title": "list_supervisor_storage_policiesOutput",
-  "type": "object"
-}New value: +null
  3. Addedv1.5.26
  4. Removedv1.5.23
  5. First observedv1.3.2

TDQS

A4.5/5.0
Behavior4/5

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

The annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false. The description adds value beyond annotations by specifying the return envelope (items of policy/name/description plus returned/total/truncated) and guaranteeing one call returns all results with truncated always false. This is useful behavioral context not present in the schema or 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: it leads with purpose, then return envelope details, then usage guidance and alternative. Every sentence carries useful information, and nothing is redundant with the schema or annotations.

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 return format, pagination behavior, and usage pattern are all explained. With such a simple input schema and rich annotations, this is a complete context for agents.

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%: the only parameter 'target' is fully described in the input schema ('vCenter in config.yaml; omit for the default.'). The description does not add parameter-level detail, but with full schema coverage, baseline 3 is appropriate.

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 opening phrase states the exact verb and resource with a clear scope, and the final line explicitly contrasts with the sibling tool list_namespace_storage_usage, so an agent can differentiate them immediately.

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?

It explicitly says 'Call this before create_namespace or update_namespace and pass the policy ID as their storage_policy.' It also gives an exclusion: 'For PVC-level usage use list_namespace_storage_usage instead.' This is direct when-to-use and alternative routing.

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

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