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

Annotations already declare readOnlyHint=true, so safety is covered; the description still adds substantial non-obvious behavior: what the response contains (reviewed plan, state/phase, outcome, per-volume fate), the meaning of 'retired', 'data_disposal', 'data_kept', and 'unconfirmed', and a crucial interpretation warning that kept_data is a point-in-time snapshot, not current state. That is exactly the kind of context annotations cannot provide.

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?

The purpose is front-loaded and every sentence carries interpretive value about retirement outcome semantics. It is dense and would benefit from slight structuring of the data_disposal/kept_data rules, but there is little genuine waste.

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 read tool with no output schema, the description supplies the return-field semantics an agent needs to report results correctly and avoid misclassifying retained data. Nothing essential to correct invocation or interpretation is missing.

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 coverage is 100%, so both UUID parameters are already documented, including where retirement_id comes from. The description adds no syntax, format, or lookup guidance beyond what the schema provides, so baseline 3 is appropriate.

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 ('Read one retirement of a managed service') and immediately ties it to the CLI twin and sibling verbs prepare_service_retirement and confirm_service_retirement. An agent can distinguish this retrieval tool from the prepare/confirm mutations without opening the schema.

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?

Explicitly says to use it to follow confirm_service_retirement until the retirement settles, which gives a clear operational context. It does not name explicit exclusions or say when another retrieval path (e.g., get_service_instance) is preferred, so it stops short of a full when/when-not guide.

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