index_stats

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

No annotations provided, and the description only says it returns stats without additional behavioral context such as whether it is read-only, performance considerations, or the exact nature of the returned data.

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 description is very concise but omits important details like what 'etc.' covers. It is front-loaded but lacks sufficient substance.

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 stats tool with no output schema, the description should enumerate the statistics provided (e.g., total publications, total issues, etc.). The vague 'etc.' leaves incompleteness.

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?

With zero parameters, the description has no need to elaborate on parameters. The schema is empty and fully covered.

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 states it provides 'Global Reletter index stats: total publications, issues, etc.' which clearly indicates aggregate statistics for the Reletter index. It distinguishes from sibling tools focused on individual records like search_publications or search_issues.

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 guidance on when to use this tool versus siblings. It does not explain that this is for high-level overviews while other tools are for detailed queries.

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