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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and openWorldHint=false, so the safety profile needs no restating. The description adds one genuine behavioral fact: only approved tools are retrievable, implying unapproved IDs will not resolve. It says nothing about error behavior or what the returned object contains.

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 front-loaded sentence with no filler; the identifier constraint is placed where it is most useful. It is arguably over-terse for a tool whose parameter semantics are otherwise undocumented.

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 two-parameter read tool with no output schema, the description covers the identifier forms but omits what gets returned and what locale affects. With no output schema present, that missing return-shape information is a real gap rather than one covered by structured fields.

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 0%, and the description usefully explains that `id` accepts either a UUID or a canonical slug, which the bare string schema does not convey. However, the `locale` parameter with its six-value enum is left entirely unexplained, so half the parameters remain undocumented.

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 ("one approved tool") and clarifies the two accepted identifier forms, which distinguishes it from the search/list siblings. It never names an alternative explicitly, so it falls short of full sibling differentiation.

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 search_tools as the natural precursor, and no statement of what happens for unapproved or missing identifiers. The lookup-after-search workflow is only inferable from the name and sibling list.

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