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

Beyond the read-only annotations, the description discloses privacy boundaries ('Never other people's identities, member counts or rankings'), the meaning of the 'available' flag when guilds are closed, and the relevant time windows for cheers and game completion. This gives the agent concrete behavioral expectations for a read tool whose data is socially sensitive.

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 purpose is front-loaded, but the description is a single run-on sentence that enumerates return fields already covered by the output schema. The trailing 'Args: {}' is redundant filler for a zero-parameter tool. It remains informative, but structure and economy are weak.

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?

The description covers availability state, privacy exclusions, time windows, and what kinds of news/game data appear. Because an output schema exists, it does not need to enumerate return fields in detail, but doing so makes the definition complete rather than deficient. Minor gaps around error behavior are acceptable for this read-only tool.

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 schema baseline is 4. The description confirms there are no arguments ('Args: {}'), though it adds no further parameter semantics because none are needed.

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 uses a specific verb ('Get') and clearly names the resource ('what is new for the user in the guilds'). It then scopes that resource precisely: six work-style guilds, a shared job-search step feed, games, cheers, and completion statuses. No sibling tool covers guild news, so it is clearly distinguishable.

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?

Usage is implied by the content description ('get what is new for the user in the guilds'), but the description never states when an agent should choose this tool or when another tool is more appropriate. There are no explicit exclusions or alternatives. The 'available is false' note is a state condition, not usage guidance.

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