chimerax_python_dir

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

The description says the listing is 'live', which hints at querying a running session, but it does not disclose whether this is read-only, what happens if the symbol doesn't exist, or any side effects. With no annotations, the description carries the full burden and falls short.

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 a single, well-structured sentence that conveys the core purpose without padding. It is front-loaded with the action and resource.

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?

The tool has 3 parameters and no annotations, but does have an output schema. The description clearly states the primary action but lacks usage guidance and parameter details. For a simple listing tool this is borderline adequate, but gaps prevent a higher score.

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 description mentions 'for a symbol', providing minimal context for the `symbol` parameter, but does not explain `limit` or `filter`. Schema description coverage is 0%, so the description fails to compensate for the undocumented parameters.

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 uses a specific verb ('List') and resource ('ChimeraX Python API attributes') for a symbol, clearly indicating a directory-listing operation. It doesn't explicitly distinguish from sibling tools like chimerax_api_search or chimerax_python_inspect, so it's clear but not fully differentiated.

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 is provided about when to use this tool versus alternatives. There are no example scenarios, prerequisites, or exclusions, leaving the agent to infer usage from the tool name alone.

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