list_key_events

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

Annotations already declare readOnlyHint=true and openWorldHint=true, and the description adds no behavioral context beyond that – no pagination behavior, no mention that property_id is required, no scoping or auth notes. It is essentially a one-line restatement of the resource being read.

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 tight sentence, front-loaded with the verb and resource, that also carries the useful rename note. No filler.

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 needn't be described, and this is a simple one-parameter read tool. Still, with annotations covering only safety and the parameter undocumented, the definition is merely adequate rather than complete.

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% for the single required parameter. The phrase 'on a GA4 property' weakly indicates what property_id refers to, but gives no format or example (e.g. 'properties/123456'), 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?

Specific verb+resource ('List the key events ... declared on a GA4 property') and it clarifies the renamed concept ('formerly conversions'), which helps an agent disambiguate from the conversions_summary sibling. It stops short of explicitly naming which sibling it is not, so it doesn't reach a 5.

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 / when-not-to-use guidance and no alternatives named, despite siblings like conversions_summary and events_summary that an agent could plausibly confuse with this configuration-listing tool. Usage is only weakly implied by the word 'declared'.

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