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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the write-without-destruction profile is covered. The description adds the geographic eligibility constraint (continental US only) but says nothing about cost, auth, rate limits, or what happens on partial failure. Its statement that it returns map_id and map_url is redundant given an output schema exists.

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, front-loaded with purpose, with no wasted wording. The brevity is efficient rather than padded, though it edges into under-specification given the tool's complexity.

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 an 11-parameter creation tool with a nested view object and zero required parameters, two sentences are far from sufficient to call correctly. The output schema excuses explaining return values, but the relationship among destination, view, route_stops, day_noun, and interests is left entirely undocumented.

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?

The description contributes no meaning for any of the 11 parameters beyond the geographic scope hint for `destination`. Schema coverage is 73%, leaving the nested `view` object, `interests`, and `travel_mode` undocumented, and nothing in the description explains how destination, view, route_stops, and interests interact to shape the created map.

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 ('Create a map of places') and bounds the scope geographically to the continental US, which is meaningful for the `destination` parameter. It does not explicitly name or distinguish itself from siblings such as map_update or map_edit_places, but the create-vs-edit distinction is inherent in the verb.

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 guidance on when to use this tool versus map_update, map_save, or map_search_places, and no stated prerequisites. An agent must infer that creation precedes editing from the name alone.

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