fanduel_racing_quicklinks

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

Annotations already declare readOnlyHint=true and idempotentHint=true, and the description adds 'Auth: none needed', which is useful context. It also discloses a partial return structure ({quickLinks:[{label, url, ...}]}), giving agents a sense of the response shape beyond the annotations.

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 extremely concise and front-loaded with the core purpose. The return and auth notes are separate but compact, and every element earns its place without redundancy.

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 the simplicity of the tool (no parameters, read-only, trivial return), the description is fully sufficient. It states the purpose, provides a return example, and mentions authentication, covering all necessary context for a tool of this complexity.

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?

With zero parameters, the schema fully covers the input space, and the baseline for no-parameter tools is 4. The description appropriately does not invent parameter details, though it also doesn't explicitly state that no parameters are required (which the schema already shows).

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 identifies the tool as providing homepage quick-link tiles for the FanDuel racing site, which matches the tool name and distinguishes it from sibling racing tools for other brands. However, it lacks an explicit verb like 'retrieve' or 'list', and does not elaborate on the exact nature of the tiles beyond the return example.

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 guidance on when to use this tool versus alternatives. It does not mention any exclusions or point to other tools for related data, leaving the agent to infer usage solely from the name and description.

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