yfinance_get_upgrades_downgrades

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

Annotations declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so the safety profile is known. The description adds that results are returned newest first and that available fields vary by symbol and analyst action, which is useful contextual behavior. However, it does not cover potential missing data or error handling.

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 well-organized, with a clear opening sentence followed by a structured field list. It provides useful detail without excessive verbosity, though the field enumeration could be considered slightly long.

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 read-only tool with only two parameters and a known output schema, the description adequately explains the returned data, ordering, and field variability. It lacks alternative usage guidance, but that dimension is separate. Overall, it is complete enough for correct invocation.

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?

Input schema covers 100% of parameters with descriptions, including symbol and max_rows semantics. The description does not add parameter-specific details beyond what the schema already provides, so 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 states the tool fetches analyst upgrades, downgrades, initiations, and price target changes, specifying the resource and action. However, it does not differentiate from the sibling tool yfinance_get_analyst_price_targets, which may overlap on price target changes.

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?

No guidance is provided on when to use this tool versus alternatives like yfinance_get_analyst_price_targets. The description only describes functionality without any when/when-not or alternative references.

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