Get channel chat stats

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered; the description contributes nothing on top of that. It does not disclose the aggregation window, whether the channel must be live, or any auth/rate-limit constraint that an openWorld read against a third-party channel would imply.

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 zero filler. It is efficient, though the same brevity that keeps it clean is what leaves the sibling disambiguation and return-shape gaps unaddressed.

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?

There is no output schema, so the description carries the burden of telling the agent what a 'chat stats summary' returns, and it does not. Combined with the absence of any differentiation from the other chatstats_* tools, the definition is too thin for an agent to call confidently.

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 coverage is 100% and the schema itself defines 'username' well (lowercase login name, not an id). The description only echoes 'by channel name', adding no format, case-handling or lookup-failure detail beyond the schema, so the baseline 3 applies.

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 clear verb and resource ('Get a channel's chat stats summary'), narrowed by an identifier ('by channel name'). However, the word 'summary' is undefined and it makes no attempt to distinguish itself from chatstats_global, chatstats_stats, chatstats_item, chatstats_search or chatstats_epm, which an agent must choose between.

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 when-to-use guidance and no alternatives named, despite six sibling chatstats_* tools in the same namespace. The agent is given no cue about when this is the right call versus chatstats_stats or chatstats_item.

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