render_tileset_atlas

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

With no annotations, the description carries the burden of disclosing behavior. It states the tool generates a PNG with a scaled grid, labels, passability indicators, and autotile slots, and notes its limitation ('not semantic proof'). It does not mention file overwriting or side effects, but the behavior is otherwise well described for a render operation.

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 two sentences long, with the main action and details front-loaded in the first sentence and usage guidance in the second. Every clause earns its place, and there is no redundancy or filler.

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 simple rendering tool with three well-documented parameters and no output schema, the description is sufficiently complete. It explains what the output looks like and when to use it, while also guiding toward a sibling tool for a different use case. Minor gaps (like error handling) are not critical for this tool type.

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 covers all three parameters with descriptions, so coverage is 100%. The tool description adds context about the atlas content (e.g., scaling with grid, tile ids) but does not provide additional parameter-specific meaning beyond what the schema already offers. Baseline 3 is appropriate.

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 states the tool's function with a specific verb ('Render') and resource ('tileset') and details the output format ('a labeled atlas ... to a PNG'). It distinguishes itself from siblings by describing the atlas contents (grid, tile ids, passability, autotile slots) and positioning it as a 'quick numeric reference'.

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 explicit usage context: it is a 'quick numeric reference, not semantic proof' and directly points to an alternative tool, create_tileset_identification_harness, for map-design role assignments. This gives clear when-to-use and when-not-to-use guidance.

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