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

Annotations already declare readOnlyHint, idempotentHint, non-destructive behavior, and openWorldHint=false, so the safety profile is covered. The description adds that the result is a place slug and lists accepted lookup formats, but it does not explain response shape, failure behavior, or the ambiguous phrase 'says full blend or grid only'.

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 description is a single front-loaded sentence with no wasted preamble. It is almost too terse, and the trailing phrase 'says full blend or grid only' is cryptic rather than informative, but overall it remains compact.

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 lookup tool with no output schema and rich safety annotations, the description covers the main query forms and result type. It is still incomplete because it omits limit semantics and leaves the final clause ambiguous, which matters when schema coverage is 0%.

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%, so the description must carry parameter meaning. It substantially documents the required q parameter by listing accepted formats such as name, City, ST, airport code, and lat/lon, but it never explains the optional limit parameter or its 1-10 bound.

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?

The description clearly states a specific verb and resource: find a place slug. It also lists accepted query forms (name, City, ST, airport code, lat/lon), which makes the tool's purpose easy to distinguish from generic siblings like search or fetch. However, it does not explicitly name an alternative or clarify its relationship to those siblings.

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?

The description gives no explicit when-to-use guidance, no exclusions, and no named alternatives among fetch, search, forecast, history, markets, receipts, or sources. The accepted input formats imply it is for location resolution, but an agent must infer when this tool is preferable to search.

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