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

The description implies a read operation ('list') but does not disclose any behavioral traits such as authentication requirements, rate limits, or pagination behavior. Since no annotations are provided, the description should carry this burden but 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, clear sentence that front-loads the purpose. While concise, it could include more detail without being verbose, but it is 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?

Given the tool's simplicity and the presence of an output schema, the description is minimally adequate. However, it lacks context about what 'nodes' are or how they relate to therapeutic areas, which could help an agent better understand the tool's role among many siblings.

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?

Input schema covers both parameters (area and limit) with descriptions and an example for area. Schema description coverage is 100%, so the description adds no value beyond the schema, yielding a baseline score of 3.

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 clearly states 'List all nodes in a given therapeutic area', using a specific verb and resource, and distinguishes from sibling tools like find_by_phase and search_nodes.

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 explicit guidance on when to use this tool versus alternatives. The description only mentions a therapeutic area parameter without indicating when not to use it or providing context for selection among siblings.

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