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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is covered. The description adds useful content scope and a 'not investment advice' caveat, but it does not discuss pagination, auth, rate limits, or other behavioral traits beyond what the structured metadata and output schema already provide.

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 with the core resource and then compactly enumerates the returned signal dimensions. Every sentence adds context, and the final disclaimer is brief and purposeful.

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 rich annotations, 100% schema description coverage, and an output schema, the description is complete enough for an agent to select and invoke the tool. It also usefully summarizes the data shape without needing to duplicate the output schema.

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%, so ticker, days, and limit are already documented in the schema. The description does not add parameter-specific meaning beyond implying company/ticker filtering, which is the expected baseline when the schema carries parameter semantics.

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 resource and scope: U.S. patents granted to a company, with counts, quarters, trends, patent types, and latest patents. It is clearly distinguishable from financial, event, and trading siblings because no other sibling covers patents.

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 phrase 'An innovation-pace signal' gives clear usage context for when an agent should reach for this tool. It does not name exclusions or alternatives, but the surrounding sibling set contains no direct patent alternative to route against.

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