create_save_game

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

Annotations already declare readOnlyHint=false, destructiveHint=false and idempotentHint=false, so safety direction is covered. The description adds the return tuple, which is genuinely useful since no output schema exists, but says nothing about whether the instance is in-memory only, where save_game_path points, or repeat-call behavior.

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 lines, verb-plus-resource front-loaded, and the return shape is stated compactly. Nothing is wasted, though it could carry more substance for the same length.

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?

For a single-parameter creation tool with no output schema, the description does supply the return shape, which is its main value. However it omits where the save game is written or how the created instance relates to later save_game/load_game calls, leaving meaningful gaps for a persistence-adjacent operation.

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 coverage is 100% for the single optional parameter, so the schema already carries the default and the rejection of the abstract base class. The description only echoes 'a specified SaveGame class' without adding format or naming guidance, so the 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 states a specific verb and resource: creating a new SaveGame instance from a SaveGame class. It is clear on its own, but it never distinguishes itself from adjacent siblings such as save_game, save_game_async, or save_game_to_memory, which an agent could easily confuse with instance creation.

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 when-to-use guidance at all. In a sibling set that includes save_game, save_game_to_memory, load_game, and delete_save_game, the description does not say when creating an instance is the right call versus persisting, loading, or querying one.

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