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

Annotations already cover read-only, idempotent, non-destructive, and closed-world behavior, so the bar is low. The description adds the useful nuance that results are scoped to what is "visible" (suggesting entitlement or data-availability limits) and that omitting date yields the latest analysis. It says nothing about units, aggregation level, or freshness, but the output schema covers return shape.

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 tight sentence with the action front-loaded and the optional-param rule appended. Nothing is wasted, though the extreme brevity leaves the concept of gamma exposure unqualified.

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 simple two-parameter read tool with annotations and an output schema, most of the burden is already carried elsewhere. Still, the description doesn't clarify what "gamma exposure" aggregates (total vs. per strike/expiry) or what "visible" entails, which an agent would want before trusting the result.

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 0%, so the description must carry the load; it partially does by explaining the date default semantics (omit for latest). The symbol parameter's format constraints (pattern, length) live only in the schema, and the description adds no meaning about accepted symbol forms or whether date returns a historical snapshot.

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+resource combo ("Get gamma exposure") scoped to a symbol, which is unambiguous on its own. It doesn't distinguish from siblings like get_options_structure or get_unusual_options, so an agent scanning the list can't tell exactly which options-exposure tool fits which need.

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?

It gives one concrete usage rule: omit date to get the latest visible analysis. That's helpful for the optional param but there is no guidance on when to prefer this over other options-analytics siblings, and no prerequisites or exclusions are mentioned.

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