set_tilemap_cell

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

With no annotations, the description carries the full burden of behavioral disclosure. It only says 'Set a cell' which is obvious from the name, but does not reveal side effects (e.g., overwriting existing cells), coordinate conventions, source texture requirements, or whether the node must be already in the scene.

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?

While the description is a single short sentence and free of fluff, it is under-specified for a tool with four required parameters, including nested objects. The lack of detail makes it poorly structured for practical use, despite its brevity.

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 no annotations, no output schema, and 0% schema description coverage, the description is critically incomplete. It provides no usage context, parameter details, or behavioral expectations, making correct invocation nearly impossible without external Godot knowledge.

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?

The schema has zero parameter descriptions and the tool description does not explain any of the four parameters. 'node_path', 'pos', 'source_id', and 'atlas_coords' are left to inference, and the nested objects ('pos', 'atlas_coords') are particularly opaque. The description fails to add meaning beyond the schema.

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 action ('set') and the resource ('a cell in a TileMapLayer'), which paraphrades the tool name without being a pure tautology. However, it does not explicitly distinguish from siblings like clear_tilemap_cell or fill_tilemap_region beyond the choice of verb, so it falls short of 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 description provides no guidance on when to use this tool versus alternatives. It does not mention related tools such as clear_tilemap_cell, fill_tilemap_region, or get_tilemap_info, nor does it state any prerequisites like node_path pointing to a TileMapLayer.

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