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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is clear. The description adds no behavioral context beyond the annotations—it does not say what 'asset requirements' include, whether the call depends on connection state, or what a caller should 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?

The definition is a single front-loaded sentence with no filler. It is concise, though the brevity reflects under-specification rather than tightly packed information.

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?

An output schema exists, so return values need not be explained. However, for a three-parameter tool with an undocumented enum-like channel_type and an undocumented connection_context, the description leaves too much unresolved for an agent to call it confidently.

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 only 33%: customer_id is documented, but channel_type has no description or enum, and connection_context is undocumented. The description names 'channel type' but provides no allowed values or format guidance, so it fails to compensate for the schema gap.

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 states a specific verb ('Return') and resource ('asset requirements') scoped to a Google Ads channel type, which is enough to understand the operation. However, it does not differentiate this lookup from related siblings such as google_ads_creation_capabilities_get or google_ads_assets_list.

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 call this tool versus alternatives, no prerequisites, and no exclusions. The agent must infer that this is a pre-upload requirements lookup rather than, for example, an asset inventory or diagnostics call.

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