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

Annotations already declare destructiveHint=true and openWorldHint=true, but the description adds nothing beyond them: it does not say whether removal is permanent vs. an archival, whether creative assets survive, or what happens when a named ad is not found. For a destructive mutation these are material gaps.

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 waste. It is terse rather than bloated, but the brevity comes at the cost of the missing behavioral detail noted elsewhere.

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?

A destructive, open-world mutation with a nested object parameter and no output schema needs more than one sentence: the fate of removed ads, error behavior for unknown ad names, and any auth/ownership requirements are all unstated.

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 100% and the nested channel_ads property has an inline example, so the schema does the heavy lifting. The description only reinforces the multi-channel aspect ('one or more channels'), adding little on matching semantics (case sensitivity, partial names).

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 (remove) and resource (ads) with scope (one or more channels in an existing campaign). The parenthetical '(ad groups)' muddies whether ads or ad groups are being removed, and no sibling such as archive_ad or remove_channels_from_campaign is distinguished.

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?

No indication of when to use this versus archive_ad (which likely preserves the ad) or remove_channels_from_campaign. No prerequisites are stated, e.g. whether the campaign must be paused or whether the ad names must already exist.

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