util_cbaw

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

No annotations are provided, so the description is the sole source of behavioral information. It states 'Colors by atom, white carbons' but does not explain side effects, what happens to other atoms, or whether it modifies the existing color scheme. The behavior is opaque and could mislead the agent.

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 very short (two fragments) but it is under-specified rather than concise. It lacks essential details that would make it useful, making it inefficient for an agent to understand purpose and usage.

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?

Given low complexity (one optional parameter, no required fields), the description should be able to cover the tool's purpose and parameter. However, it does not explain the effect on atoms or the return value. The presence of an output schema is not mentioned, and the description feels incomplete for safe agentic use.

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 a 'selection' parameter (default 'all') with no description. The tool description does not explain this parameter at all, leaving the agent to guess its role. With 0% schema description coverage, the description should compensate but it fails to do so.

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 'Colors by atom, white carbons' which identifies a specific verb (colors) and resource (atoms, focusing on white for carbons). It is somewhat clear but ambiguous: does it color all atoms or only carbons? The parenthetical '(Color By Atom, White)' adds clarity but still lacks specificity. It distinguishes from generic 'color' tool but not from sibling utilities.

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?

There is no guidance on when to use this tool vs. siblings like 'util_cbac' or 'util_cbag'. The description does not mention alternatives or provide context for selection. An agent would have to infer based on the name alone.

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