List colors

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is fully covered structurally. "Reads account data" merely restates readOnlyHint at account scope and adds no new behavioral detail such as return shape, pagination, or scope of visible colors.

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 fragments with zero filler and the action is front-loaded, but the brevity reflects under-specification rather than efficiency. Nothing is wasted, yet almost nothing is conveyed beyond the tool name.

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 single-optional-parameter, read-only listing tool with full schema coverage and rich annotations, and no output schema to explain, the description is minimally adequate. It still leaves the domain meaning of "colors" and the relationship to `update_colors` unstated, so it is not fully complete.

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?

There is one optional parameter and schema description coverage is 100%, so the `account` parameter, its default chain (KIT_DEFAULT_ACCOUNT / first configured account), and its source (KIT_ACCOUNTS) are already fully documented in the schema. The description contributes nothing about the parameter, so the 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?

The description states a specific verb ("List") and resource ("colors"), so an agent knows exactly what operation is performed. It does not, however, distinguish this from the sibling `update_colors`, and gives no hint at what a "color" object represents in this system. Clear but undifferentiated from siblings.

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?

"Reads account data" hints at the context of use (account-scoped reads) but stops far short of guidance. There is no statement of when to call this tool, when not to, or how it relates to `update_colors` or `get_account`. An agent must infer usage entirely.

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