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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds the list of returned fields but says nothing about pagination, rate limits, or how 'limit' affects results, which is the kind of extra context that would push this higher.

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?

A single front-loaded sentence that leads with the resource and the typeahead nature, then lists the return fields. No filler, though the return-field enumeration is partly redundant given the output schema exists.

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?

The output schema means return values need not be spelled out, and annotations cover safety. However, with 3 of 4 parameters undocumented and no guidance on the l/cc/limit fields, the definition is incomplete for an agent trying to call it precisely.

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 0% across 4 parameters, and the description only glosses 'for a term'. The other three parameters (l, cc, limit) are entirely undocumented in both schema and description, so an agent cannot know their format or effect from this text.

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?

States a specific verb+resource ('PlayStation Store search suggestions (typeahead)') and enumerates the returned fields, so the agent knows exactly what this returns versus a full search. It does not explicitly name sibling playstation_search as the alternative, which keeps it from a 5.

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 word 'typeahead' implies autocomplete-style usage, but the description never says when to pick this over playstation_search or playstation_product, and there are no exclusions or prerequisites. Usage is only implied.

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