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

There are no annotations, so the description carries the behavioral disclosure burden. It does convey that the tool returns a full table of values for all options and criteria, which is informative, but it does not describe any filtering behavior beyond what the schema already says, nor potential limitations such as missing values, display order, or data source caveats.

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, focused sentence that front-loads the core behavior: returning each option's value for every criterion. It is economical with no filler, though it sacrifices some explanatory context about alternatives or edge cases.

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 tool with one optional parameter and no output schema, the description provides enough conceptual context to understand the return value: a table of options versus criteria. Combined with the inline schema for the parameter, an agent can invoke it correctly, although a note distinguishing it from sibling tools would make it more complete.

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 description coverage is 100%, and the parameter is already documented as 'one option's name, else all'. The description's use of 'option's value' loosely aligns with the parameter but adds no new semantic detail beyond the schema, so the baseline score of 3 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 clearly states the tool returns a full comparison table mapping options to criterion values, using a specific resource ('the US virtual data room providers comparison'). It implicitly distinguishes itself from sibling tools like compare_criteria and compare_options by emphasizing 'every criterion' and 'full table', though it could be more explicit about its exact action verb.

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 explicit guidance is given about when to use this tool versus compare_criteria or compare_options. The phrase 'the full table' hints that this is the comprehensive view, but there is no clear statement of alternatives or exclusionary conditions, leaving the agent to infer usage context.

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