set_palette

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

Annotations already declare destructiveHint=true, and the description's 'Replace the entire palette' largely restates that rather than adding context. It says nothing about what 'filename' scopes to (which sprite/palette file), whether the previous palette is recoverable, or what happens to palette indices already in use.

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?

Two short lines, front-loaded with the destructive action and then the one non-obvious parameter format. The trailing fragment 'colors: ...' is slightly terse but not wasteful.

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 destructive, file-scoped mutation with no output schema, the description is minimally adequate: it conveys the overwrite semantics and the colour format. It omits what 'filename' refers to and any recoverability/permission note, which matters given destructiveHint=true.

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 coverage is 0%, so the description must compensate. It does document the 'colors' parameter with concrete format examples (hex and 'r,g,b' strings), which is genuinely useful, but the required 'filename' parameter is never explained, leaving half the inputs ambiguous.

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?

States a specific verb ('Replace') plus resource ('palette') and scope ('entire'), which distinguishes it from partial mutators like add_palette_color or set_palette_color. It does not explicitly name those siblings, but the scoping word 'entire' carries the differentiation.

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 when-to-use guidance and no mention of alternatives, despite a dense sibling cluster (set_palette_color, add_palette_color, resize_palette, load_palette, quantize_palette). The agent is left to infer that this is the whole-palette overwrite variant.

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