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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so safety is covered. The description adds the meaningful constraint that only public approved stacks are accessible, implying non-public or unapproved IDs will fail, but it doesn't say what error or fallback behavior to expect.

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?

A single short sentence with no filler, front-loaded with the verb and resource. It is efficient rather than padded, though brevity here comes at the cost of specification.

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 simple single-record read with annotations covering safety, this is close to adequate, but the meaning of 'approved', the effect of locale, and the failure mode for non-public IDs are all left unexplained. It is the minimum viable definition rather than a complete one.

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 0% and the description explains neither the required 'id' (a UUID of which stack) nor the 'locale' parameter (what it affects in the returned content). With two undocumented parameters, the description should compensate and does not.

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 ('Get ... stack') and adds a scope qualifier ('public approved'), which tells the agent what subset of stacks is retrievable. It does not differentiate from siblings such as list_stacks or get_tool, but the core purpose is unambiguous.

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 when-to-use guidance, no mention of prerequisites, and no reference to alternatives like list_stacks for discovery. The only implied guidance is that only public, approved stacks are fetchable.

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