Batch Adjust Colors

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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive, so the safety profile is covered. The description adds nothing behavioral beyond that – no mention of how out-of-gamut results are handled, what the return shape is, or the meaning of relative vs absolute adjustment. With the bar lowered by annotations, it still fails to add any context.

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?

A single terse parenthetical phrase that is front-loaded and wastes no words. It is arguably under-specified rather than over-long, but for a short definition it is efficiently structured.

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?

All parameters are documented by the schema and annotations cover safety. However, with no output schema, the description should arguably state what is returned (adjusted color strings), and it gives no behavioral detail on how batch failures or invalid colors are surfaced.

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%, so the schema already documents all four parameters including the mode enum and the amount semantics. The description merely restates the enum values, adding no meaning beyond the schema. Baseline 3 applies.

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 clear verb ('adjust') and resource ('a list of colors') and names the three adjustable dimensions. The word 'list' hints at the batch-vs-single distinction against colors_adjust, but the description never explicitly differentiates itself from that sibling or from colors_convert.

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 guidance on when to use this rather than colors_adjust (single color) or colors_scale. Given a crowded sibling set of ten color tools, the absence of any routing signal is a notable gap.

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