Create machine pool

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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the write nature is covered; the description adds real value by enumerating the provider set and warning that required fields vary by provider. It omits whether re-invocation creates duplicates (idempotentHint=false), what the call returns, and how pool machines get provisioned, none of which the annotations convey.

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 sentences, front-loaded with the action and then the body contents; the provider list and the reference link are packed in without filler. The second sentence is dense and run-on, but nothing is wasted.

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 complex mutation with nested oneOf provider variants, no output schema, and annotations already covering the safety profile, the description is complete enough: it covers the resource created, the body's major field groups, the provider-dependent required fields, and defers the full request schema to the linked API reference. Return value need not be described since no output schema exists and the reference is cited.

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?

With 0% schema description coverage on the body's properties, the description carries the parameter burden and does so reasonably: it names the pool name, provider, provider auth secret, default machine settings, and the per-machine/total CPU, memory, and machine-count limits. It does not explain orgID or the exact per-provider field matrix, but the provider-dependency caveat compensates substantially.

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?

States a specific verb and resource ('Creates a machine pool in the organization'), and the scope (organization) is explicit. It is trivially distinguishable from siblings pools_update, pools_delete, pools_get, and pools_list.

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?

Usage is only implied by the verb 'creates' — there is no explicit 'use this instead of X when Y', no prerequisites (e.g. required org permissions), and no note that pools_update should be used for changes to an existing pool. The provider-dependent required-field caveat is helpful context but is a schema fact, not usage routing.

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