iaas_update_vsphere_cloud_account_async

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

Annotations already declare readOnlyHint=false, destructiveHint=false, openWorldHint=true, idempotentHint=false, so the safety profile is partly covered. However, the description adds nothing else: the '_async' nature (return of a request tracker, eventual consistency) is never mentioned, nor credential/certificate implications, even though the suffix is the main behavioral trait of this tool.

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

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

Two short lines, front-loaded, no filler. The endpoint line is largely redundant with the annotation title, which is the only real waste, but nothing bloats the definition.

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

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

For a mutation endpoint with a deep nested body, no output schema, and an async contract, the description leaves out everything an agent would need beyond the schema: the meaning of the async response, the schema's own warning that changing hostName is discouraged, and any side effects on regions/zones. The rich schema covers inputs, but behaviorally the definition is thin.

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

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

Schema description coverage is 100%, so the two path/version params and the heavy nested body (hostName, regions, dcid, certificateInfo, associations) are fully documented in the schema. The description contributes no parameter meaning of its own, so it sits at the baseline of 3.

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

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

The description names the verb and resource ('Update vSphere cloud account') and adds the raw endpoint, but it is essentially a restatement of the tool name and annotation title. It does not distinguish it from the many sibling update tools (update_aws/azure/gcp/vmc/vcf cloud account, update_vsphere_storage_profile) beyond the resource noun already present in the name.

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

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 versus the delete/get/create vSphere siblings, no prerequisites (e.g., needing the account id from iaas_get_vsphere_cloud_accounts), and no note about when this async PATCH should be preferred. The agent must infer usage entirely from the name.

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