getStockGradeSummary

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, so the description does not need to restate safety. It adds useful behavioral detail by saying the result is a consolidated count across five rating categories, though it omits freshness, coverage, or 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 front-loaded and understandable, but it contains promotional phrasing ('Quickly access', 'with just a few data points') and repeats the idea of an overall/consolidated summary. It could be tightened without losing information.

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 one-parameter, read-only lookup, the annotations and schema cover safety and input semantics, and the description sufficiently explains the returned rating-count composition even without an output schema. Minor gaps around data freshness or source are not critical to invoking the tool correctly.

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 single symbol parameter is already documented as the stock symbol. The description only restates that the summary is for individual stock symbols and adds no format, example, or validation detail beyond the schema, so the baseline 3 applies.

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 identifies the resource as an analyst ratings/grades summary for an individual stock symbol and specifies the returned rating buckets (strong buy, buy, hold, sell, strong sell). It does not distinguish this tool from close siblings such as getRatingsSnapshot or getStockGrades, so it stops short of a 5.

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 implies a use case (understanding overall consensus) but gives no explicit when-to-use guidance versus alternatives like getStockGrades, getHistoricalStockGrades, getRatingsSnapshot, or getPriceTargetSummary. There are no exclusions or routing hints for an agent choosing among many analyst-rating tools.

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