set_navigation_layers

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

No annotations exist. The description only mentions pathfinding filtering but fails to disclose behavioral traits like persistence, error handling, parameter validation, or required conditions. The agent is left uninformed about side effects or permission needs.

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 a single sentence, making it concise, but it includes inaccurate information ('and/or mask'). It is not well-structured because the inaccuracy undermines its utility.

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 and no annotations, the description should compensate. It does not explain return values, validation, or consequences of usage. For a tool that modifies navigation settings, more context is needed for safe use.

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% with basic descriptions for 'path' and 'layer'. The description adds no additional value; worse, it misleadingly references a 'mask' parameter that does not exist, causing confusion.

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 the tool sets navigation layers and/or mask for pathfinding filtering, but the input schema only includes a 'layer' parameter with no 'mask', creating inconsistency. While the verb and resource are identifiable, the inaccuracy reduces clarity.

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 provides no guidance on when to use this tool over alternatives such as get_navigation_info, setup_navigation_agent, or set_collision_layer_name. No context about prerequisites or exclusions is given.

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