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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only mentions that the tool retrieves data in bulk, but gives no details on pagination, response format, rate limits, or how symbols are specified. This is a significant gap for a bulk API.

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 two sentences and front-loads the main purpose. The second sentence about target audience is somewhat extraneous but not excessive. Overall, it is concise and well-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?

Given that there is no output schema and no annotations, the description is incomplete. It does not explain how the bulk data is returned, whether it covers all symbols for the date, or how it differs from related tools like getBatchQuotes. The mismatch between 'multiple symbols' and a date-only parameter is a critical omission.

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 schema describes the only parameter 'date' with 100% coverage, but the description says 'multiple symbols' while the schema has no parameter for symbols. This creates a misleading expectation that the user can specify symbols, which is not supported by the provided schema. The description adds no value beyond the schema and actually introduces confusion.

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 'retrieve end-of-day stock price data for multiple symbols in bulk,' which is a specific verb and resource. It clearly identifies what the tool does, though it does not explicitly differentiate it from other bulk data tools like getBatchQuotes or getBatchQuotesShort.

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 says the API 'is ideal for financial analysts, traders, and investors who need to assess valuations for a large number of companies,' providing a clear use case. However, it does not mention any alternatives or explicitly state when not to use it, so the guidance is implied rather than explicit.

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