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

Annotations already declare readOnlyHint=false, idempotentHint=true and destructiveHint=false, so the safety profile is covered and the description is consistent with it. The description adds the return behavior ("Returns the new status"), which is meaningful because no output schema exists, and it discloses nothing contradictory.

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 sentences, the trigger condition and outcome front-loaded, with zero filler. Every clause earns its place.

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 mutation with no output schema, the description covers the trigger, the effect, and the return value. It omits edge behavior such as what happens if the retry fails again or whether setup is asynchronous/long-running, which are the only relevant gaps.

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 100% schema description coverage, the single productId parameter is already documented including its source (list_products). The description adds no further syntax, format, or constraint detail, so the baseline 3 applies.

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+resource (retry setup of a hosted product) and the precondition (setup failed), so the action is unambiguous. It does not differentiate itself from near-neighbors such as create_product, update_product, or retry_training_publish, which is the only thing keeping it from a 5.

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?

"whose setup failed" gives a clear, actionable trigger condition for when to use this tool rather than a fresh setup. No explicit exclusions or named alternatives (e.g. get_setup_status to verify failure first) are provided, so it stops short of a 5.

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