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

Annotations already declare readOnlyHint, destructiveHint=false, and openWorldHint=false, covering the safety profile. The description's only additional signal is the ambiguous word 'safe', which is never explained, and it omits any statement about return shape or filtering despite there being no output schema.

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 padding or preamble. It is efficient, though the word 'safe' adds noise rather than 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?

For a tool with an unexplained required-format parameter and no output schema, the description is too thin: it neither clarifies the opaque connection_context identifier nor explains what 'health' and 'operation policy fields' contain. Annotations cover the safety profile, but the core semantics remain underspecified.

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 single parameter connection_context has 0% schema description coverage and is not mentioned at all in the description. The constraint-heavy pattern (^mctx_v1_[0-9a-f]{64}$) is left entirely unexplained, so the description does nothing to compensate for the coverage 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?

It states a verb ('List') and a resource area ('Google connection health and operation policy fields'), so the general action is clear. However, the qualifier 'safe' is undefined and the phrase 'health and operation policy fields' is jargon that doesn't pin down what is actually returned, nor distinguish it from siblings like google_ads_accounts_list or google_ads_connection_permissions_set.

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 prerequisites, and no mention of the adjacent sibling tools (e.g. google_ads_connection_permissions_set). The agent is left to infer the call context entirely.

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