tilemap_set_cell

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

With no annotations provided, the description carries the full burden of disclosing behavioral traits. It only states the basic operation without mentioning side effects (e.g., whether changes are committed immediately), error conditions (e.g., invalid coordinates), or required permissions. The description is too minimal for a mutation tool.

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, clear sentence. It is appropriately sized and front-loaded. However, it could benefit from a bit more detail to improve usability without sacrificing conciseness.

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 tool has 5 parameters, 2 required, and no output schema. The description only covers the basic purpose, missing essential context such as return values, error handling, and typical use cases. Compared to sibling tools with similar complexity, this description is notably insufficient.

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 input schema has 100% coverage with descriptions for all 5 parameters. The description adds no additional meaning beyond 'Set a single cell', which is already implied. Baseline is 3 since the schema already documents parameters adequately.

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 'Set a single cell in a TileMap' clearly states the action (set) and the target (single cell in a TileMap). It distinguishes from sibling tools like tilemap_clear (clears all cells) and tilemap_fill_rect (fills a rectangle), making the tool's purpose unambiguous.

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 such as tilemap_fill_rect or tilemap_clear. No context is given about prerequisites (e.g., existence of the TileMap node) or when setting a single cell is appropriate.

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