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

No annotations are provided, so the description bears full responsibility for disclosing behavior. It does not mention side effects, return format, data source, or any limitations. The description is purely declarative and offers no behavioral insight.

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 sentence with no wasted words, so it is concise in form. However, it is so underspecified that the sentence adds little value; it is not front-loaded with useful context. It is concise but not effectively structured.

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?

With no annotations, no output schema, and no parameter details, the description must stand alone. It is completely inadequate—an agent cannot determine what data this returns, how it differs from similar tools, or what 'cross-market comparison' entails. The description leaves nearly all critical context missing.

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 zero parameters, so the schema already fully covers parameter semantics through absence. Baseline for 0 params is 4; the description does not need to explain parameters since there are none, and it does not contradict or mislead in this regard.

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 is a vague noun phrase 'Cross-market comparison overview for peer stock context' without a clear verb or resource. It does not specify what is compared, which markets are involved, or what 'peer stock context' means. It is too ambiguous to distinguish from siblings like compare_stocks or get_scatter.

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?

There is no guidance on when to use this tool versus alternatives, no mention of prerequisites, and no exclusion of cases where a different tool should be used. The description provides zero usage context.

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