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 a genuine behavioral trait not present in structured data: 'Flat 5 points per successful run', which tells the agent the cost model. It could go further on pagination or result limits, but the cost disclosure is real added value.

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?

Two compact sentences: the first defines the payload, the second covers the optional filter and cost. It is front-loaded with the resource description and contains no redundant or filler text.

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 no output schema, the description carries the burden of describing returns, and it does: categories, per-category tool counts, and group membership. Combined with the cost note and the fully documented single parameter, an agent has enough to call it correctly, though pagination/result-size behavior is unaddressed.

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% and the single 'group' parameter has a fully documented enum, so the schema does the heavy lifting. The description only restates that the filter is optional and adds no format or semantic detail beyond the schema. 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 names a specific resource (Futurepedia AI tool categories) and specifies the payload: each category with its tool count and parent group. It is distinguishable from siblings like run_futurepedia_tools by returning category-level aggregates rather than tools. It stops short of explicitly contrasting itself with the categories-related siblings, but the purpose is clear.

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 description notes an 'Optional group filter' so the agent knows the parameter is not required, but gives no explicit when-to-use guidance or routing against alternatives such as run_futurepedia_tools_search. Usage is implied rather than stated.

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