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

Annotations already declare this a safe read (readOnlyHint=true, destructiveHint=false). The description adds value by previewing the returned content areas (capabilities, pricing, operator info, status), but says nothing about authorization requirements, visibility restrictions, or behavior on an unknown/unauthorized ID. With annotations covering safety, a 3 is appropriate.

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?

One sentence, front-loaded with the verb and resource, followed by a compact preview of the returned fields. No filler or repetition.

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 one-parameter read-only tool with no output schema, the description usefully sketches what is returned (capabilities, pricing, operator info, status). It is essentially complete, though it could note that the ID comes from list_registrations or how missing IDs behave.

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?

There is a single, fully schema-documented parameter (registrationId, 100% coverage). The description repeats that lookup is by ID but adds no format, source, or validity semantics beyond the schema. Baseline 3 for high schema coverage.

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 (Get) and resource (machine registration) scoped to a single record by ID, and previews the payload contents. It does not explicitly name the sibling list_registrations, but the 'specific ... by ID' framing makes the single-record vs. list distinction inferable.

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 context is implied only: the 'by ID' phrasing tells the agent it needs a known registration ID, which is the practical precondition. There is no explicit when/when-not guidance and no reference to alternatives such as list_registrations for discovery.

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