reai_bre100_stats

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The description clearly establishes this is a read/statistics operation with no side effects implied, which is reasonably transparent. However, it doesn't disclose return format, pagination behavior, or whether the stats are live or cached, which would add value given the zero annotation coverage.

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 a single compact sentence that conveys the purpose and the two specific breakdown dimensions. Every word earns its place with zero repetition or 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?

For a zero-parameter statistics tool with no output schema, the description adequately covers what the tool provides: total count plus two breakdown axes. Given the simplicity of the tool, this is reasonably complete. It could benefit from mentioning the return format, but for a simple stats tool with no inputs, the core requirements are met.

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 has 0 parameters, so there is no parameter semantics to convey. Per the rubric, 0 params earns a baseline of 4. The description focuses on what data the tool returns rather than explaining parameters, which is appropriate.

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 a specific verb ('Get') with a clear resource ('BRE-100 pattern registry statistics') and specifies the exact scope of what's returned: total patterns, breakdown by business process and complexity. It clearly distinguishes itself from sibling tools like reai_v10v11_stats (different registry) and reai_bre100_high_value (focused on high-value patterns rather than statistics).

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 description implies when to use this tool (when statistics about the BRE-100 pattern registry are needed) by stating what data it returns. However, it doesn't explicitly state when not to use it or name alternatives, though the sibling reai_v10v11_stats is implicitly the counterpart for a different version. The breakdown detail ('by business process and complexity') provides useful context for matching specific use cases.

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