get_eps_revisions

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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true, and destructiveHint=false, so the safety profile is fully covered elsewhere. The description adds essentially nothing beyond that: no auth requirements, no coverage universe, no rate limits, and its return-value note duplicates the output schema.

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 core sentence is front-loaded and short, but the 'Args/Returns' scaffolding is largely redundant: the parameter is already in the input schema and the return content is already described by the existing output schema. Roughly a third of the text earns no new 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?

With a rich annotation set and an output schema present, the description need not explain returns or safety, and it is adequate for a single-parameter read tool. Its real gap is routing: nothing tells the agent why to pick this over get_eps_trend or get_analyst_estimates in a 70-tool catalog.

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% (the single param carries only the title 'Ticker'), so the description must compensate, and 'ticker: Stock ticker symbol' is the minimum it can do. It does not specify expected format (e.g., 'AAPL' vs. exchange-suffixed symbols), though with only one obvious parameter the risk of misuse is low.

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?

States a specific verb and resource: 'Get EPS revision data showing analyst estimate changes,' which tells an agent exactly what comes back (up/down analyst estimate changes). However, it offers no differentiation from close siblings like get_eps_trend, get_analyst_estimates, or get_upgrades_downgrades, so the agent must guess which is correct.

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 when-to-use guidance, no prerequisites, and no mention of alternatives among the many overlapping analyst-estimate siblings. The agent is left to infer that this is the estimate-revision view rather than the trend or estimates view.

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