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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds only that ids and row/column clues are included, which overlaps with the existing output schema, and says nothing about volume, pagination, or result size. Little behavioral value beyond the structured fields.

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 short sentence with no filler, front-loaded with the resource and its contents. It is efficient, though arguably too terse for a listing tool, bordering on under-specification rather than maximal information density.

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 exists, so return values need not be spelled out, and annotations cover safety. Still, for a listing tool the description omits anything about result volume, ordering, or how it relates to get_puzzle. Adequate but with clear gaps given the crowded sibling set.

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?

There is one optional parameter (size) with 100% schema description coverage and an enum of grid sizes, so the schema fully documents it. The description does not mention filtering by size at all, adding no meaning beyond the schema. Per the baseline rule for high schema coverage, 3 is appropriate.

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 the resource (benchmark puzzles) and the fields returned (ids and row/column clues), so an agent knows this is a listing of puzzle definitions. However, it is a noun phrase with no verb and no differentiation from siblings like get_puzzle or get_model_puzzles, which also concern puzzles. Purpose is decipherable but not sharply scoped.

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 indication of when to use this tool versus get_puzzle (single puzzle), get_model_puzzles, or get_puzzle_results. No prerequisites, no exclusions, no alternatives are mentioned. The agent must infer usage purely from the name.

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