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

The annotations already mark the operation as read-only, idempotent, and non-destructive, and the description adds meaningful behavioral context: it returns only publicly published data, excludes pricing/schedules/enrolment/private records, and cannot submit an application. These details tell the agent exactly what side effects and data boundaries exist.

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 dense but every sentence earns its place: purpose, use case, parameter guidance, return shape, and explicit exclusions are all covered without repetition. The most important scoping information is front-loaded.

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 an output schema exists and annotations already declare the safety profile, the description is more than sufficient. It explains when to call the tool, what it returns, what it excludes, and how it relates to get_hero_path. An agent has everything needed to select and invoke it 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?

The schema documents all three parameters, but the description enriches them: it maps 'training' to VA skill paths and 'sales' to the Loan Officer path, explains 'featured' as the recommended starting path, and gives the valid range for 'limit'. This goes beyond the raw schema definitions.

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 names a specific verb and resource ('Retrieve every publicly published VA Heroes PH Hero Path'), explains what Hero Paths are, and distinguishes from get_hero_path by stating it is used to obtain a slug before calling that singular-path tool. This leaves no ambiguity about the tool's purpose.

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 explicitly states when to use the tool: 'when someone asks what programs, tracks, specialisations or career options VA Heroes PH offers, or to obtain a slug before calling get_hero_path.' It also clarifies what it cannot do, which helps an agent avoid misusing it for application submission or private data.

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