Explain MASV activities and states

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds no behavioral value beyond that: nothing about return format, pagination, state enumeration, or what 'accurate states' actually entails. It essentially restates its own purpose in the second sentence.

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 sentences, but the second is largely redundant with the first and is grammatically awkward ('use this tool provide users with'). The first sentence also stacks 'detailed information' and 'accurate states description' without adding precision. Some trimming is warranted.

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 no-param, read-only, annotation-covered tool the description is minimally adequate, but it omits what an 'activity' or a 'state' is and how this differs from get_activities/get_activity_events. Given the crowded sibling set, more context is needed to invoke correctly.

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 tool takes zero parameters, so the baseline is 4. There is no parameter syntax for the description to clarify, and it correctly implies the tool takes none.

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 ('Get detailed information about all existing activities') and adds that it covers their states. However, it does not distinguish itself from the sibling tools get_activities and get_activity_events, so an agent cannot tell from the description alone why it should pick this tool over those.

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?

The second sentence ('Always use this tool provide users with detailed explanation about activities and their states') is a directive but gives no when-to-use conditions or alternatives. With closely related siblings (get_activities, get_activity_events) available, the absence of routing guidance is a real gap.

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