game_shape_2d

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

The description provides no behavioral transparency beyond the name. It does not state whether the tool is destructive, requires node existence, or has side effects. With zero annotations, the agent gets no warning about mutability or error 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?

The description is extremely concise (one phrase), which is efficient but under-specifies. It lacks a complete sentence and essential details. True conciseness would pack more meaning into a brief form, but here it's too sparse.

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 tool has 6 parameters, nested objects, no output schema, and no annotations, the description is woefully incomplete. It omits return values, error conditions, and behavioral guarantees, leaving the agent with insufficient information to use the tool reliably.

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?

Input schema covers 100% of parameters with descriptions. The description adds no additional meaning beyond the schema. Baseline 3 is appropriate as the schema already explains parameters like action and point, though the description could clarify action options but doesn't.

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's domain: manipulating points on Line2D/Polygon2D nodes. It distinguishes itself from generic node manipulation siblings by targeting a specific geometry type. However, the phrase 'point manipulation' is somewhat vague and could benefit from specifying the available actions.

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?

No guidance is provided on when to use this tool versus alternatives. The description does not mention prerequisites, preferred scenarios, or exclusions. Sibling tools like game_set_property might also modify node properties, but no comparison is given.

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